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WO2016008165A1 - 一种基于飞行器的图像投影方法、装置及飞行器 - Google Patents

一种基于飞行器的图像投影方法、装置及飞行器 Download PDF

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Publication number
WO2016008165A1
WO2016008165A1 PCT/CN2014/082566 CN2014082566W WO2016008165A1 WO 2016008165 A1 WO2016008165 A1 WO 2016008165A1 CN 2014082566 W CN2014082566 W CN 2014082566W WO 2016008165 A1 WO2016008165 A1 WO 2016008165A1
Authority
WO
WIPO (PCT)
Prior art keywords
aircraft
projection
obstacle
image
module
Prior art date
Application number
PCT/CN2014/082566
Other languages
English (en)
French (fr)
Inventor
高明明
杨康
周谷越
孙辉
王启光
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to JP2016574448A priority Critical patent/JP6584017B2/ja
Priority to PCT/CN2014/082566 priority patent/WO2016008165A1/zh
Publication of WO2016008165A1 publication Critical patent/WO2016008165A1/zh
Priority to US15/409,280 priority patent/US10597169B2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D47/00—Equipment not otherwise provided for
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/10—Terrestrial scenes
    • G06V20/13—Satellite images
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/10—Terrestrial scenes
    • G06V20/17—Terrestrial scenes taken from planes or by drones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
    • H04N7/185—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source from a mobile camera, e.g. for remote control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor
    • H04N9/3185—Geometric adjustment, e.g. keystone or convergence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3191—Testing thereof
    • H04N9/3194—Testing thereof including sensor feedback
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U2101/00—UAVs specially adapted for particular uses or applications
    • B64U2101/20—UAVs specially adapted for particular uses or applications for use as communications relays, e.g. high-altitude platforms
    • B64U2101/24—UAVs specially adapted for particular uses or applications for use as communications relays, e.g. high-altitude platforms for use as flying displays, e.g. advertising or billboards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U2101/00—UAVs specially adapted for particular uses or applications
    • B64U2101/30—UAVs specially adapted for particular uses or applications for imaging, photography or videography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U2201/00—UAVs characterised by their flight controls
    • B64U2201/20—Remote controls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U50/00—Propulsion; Power supply
    • B64U50/10—Propulsion
    • B64U50/19—Propulsion using electrically powered motors

Definitions

  • the present invention relates to the field of electronic technology, and more particularly to an aircraft-based image projection method, apparatus, and aircraft.
  • Projection is just a device that projects an image (file, photo, or video) onto the screen. Specifically, it can be connected to a mobile smart device, a computer, or the like through various wired transmission interfaces to project corresponding images such as files, photos, and videos.
  • the existing projector is generally fixedly mounted at a certain height, and the relevant image can be better projected onto the screen by adjusting the position of the projector and the lens to match the screen.
  • the position of the existing projector is relatively fixed and not flexible enough, and it is troublesome to disassemble when it is required to project an image at a new position.
  • Embodiments of the present invention provide an aircraft-based image projection method, apparatus, and aircraft, which can flexibly project related information at certain projectable positions by adjusting an aircraft.
  • Embodiments of the present invention provide an aircraft-based image projection method, including:
  • adjusting the position of the aircraft comprises: adjusting an position of the aircraft according to an image of the obstacle obtained in a projection direction of the projection module.
  • the method further includes: recording location information of the projectable position, where the location information includes: coordinate information and altitude information; acquiring an aircraft during image projection The coordinate data and the height data, and the acquired coordinate data and height data are compared with the coordinate information and the height information, and the position of the aircraft is adjusted to be maintained at the projectable position based on the comparison result.
  • adjusting the position of the aircraft to the projectable position comprises:
  • the position corresponding to the position is determined as a projectable position; wherein the obstacle refers to an obstacle in the projection direction of the aircraft projection module.
  • the detecting whether there is an obstacle that meets a preset projection background condition includes: obtaining, at the adjusted position, an edge of the currently existing obstacle, a distance from each position of the obstacle to the aircraft, And an image including the obstacle;
  • the preset projection background condition is satisfied, it is determined that there is an obstacle that satisfies the preset projection background condition.
  • the method further includes:
  • the aircraft sound pickup module is called to collect the original sound signal
  • the collected original sound signal is filtered based on a preset propeller sound frequency to obtain a sound signal
  • the sound signal is stored or transmitted to the client.
  • an embodiment of the present invention further provides an aircraft-based image projecting device, including: a position adjustment module, configured to adjust a position of the aircraft to a projectable position when an image projection event to the aircraft is detected;
  • a projection control module configured to trigger a projection module of the aircraft to project an image
  • the position adjustment module is specifically configured to adjust an position of the aircraft according to an image of an obstacle acquired in a projection direction of the projection module when an image projection event to the aircraft is detected.
  • the device further includes:
  • a storage module configured to record location information of the projectable location, where the location information includes: coordinate information and altitude information;
  • the position adjustment module is further configured to acquire coordinate data and height data of the aircraft during image projection, compare the acquired coordinate data and height data with the coordinate information and the height information, and adjust the aircraft based on the comparison result.
  • the position is such that it remains in the projectable position.
  • the location adjustment module includes: An adjusting unit, configured to adjust an position of the aircraft when an image projection event to the aircraft is detected; and a detecting unit, configured to detect, at the adjusted position, whether there is an obstacle satisfying a preset projection background condition, if not And instructing the adjusting unit to adjust the aircraft to the new position again; determining unit, configured to determine the position at which the corresponding position can be projected if there is an obstacle satisfying the projected background condition;
  • the obstacle refers to an obstacle in a projection direction of the aircraft projection module.
  • the detecting unit is configured to acquire, at the adjusted position, an edge of the currently existing obstacle, a distance from each position of the obstacle to the aircraft, and an image including the obstacle; The edge of the obstacle, the distance of each point of the obstacle, whether the color and texture features of the obstacle in the image satisfy a preset projection background condition; if the preset projection background condition is met, it is determined that the existence is satisfied An obstacle that projects the background condition; if the preset projection background condition is not met, the adjustment unit is notified to adjust the aircraft to the new position again.
  • the device further includes:
  • the recording processing module if the recording operation is detected, calls the aircraft pickup module to pick up the original sound signal; and filters the collected original sound signal based on the preset propeller sound frequency to obtain a sound signal;
  • an output module configured to store the obtained sound signal or send the obtained sound signal to the client.
  • an embodiment of the present invention further provides an aircraft, including: a controller and a hanging component for supporting the external projection device, wherein
  • the controller is configured to adjust a position of the aircraft to a projectable position when detecting an image projection event to the aircraft; projecting a projection device that triggers the hanging component to project an image; wherein the adjusting the position of the aircraft includes : Adjusting the position of the aircraft based on the image of the obstacle acquired in the projection direction of the projection module.
  • the controller is further configured to record location information of the projectable location, where the location information includes: coordinate information and altitude information; during image projection, acquiring coordinate data and altitude data of the aircraft, and The acquired coordinate data and height data are compared with the coordinate information and the height information, and the position of the aircraft is adjusted to be maintained at the projectable position based on the comparison result.
  • the aircraft further includes:
  • a detector for detecting an edge of a currently existing obstacle, a distance from each position of the obstacle to the aircraft, the obstacle being an obstacle in a projection direction of the projection device hung by the hanging component Object
  • a camera for capturing an image including the obstacle
  • the controller is further configured to determine an edge of the obstacle sent by the detector, a distance of each position of the obstacle, a color and a texture feature of the obstacle photographed by the camera in the image.
  • the projection background condition is set, and if the preset projection background condition is satisfied, it is determined that there is an obstacle satisfying the preset projection background condition.
  • the aircraft further includes:
  • the controller is further configured to filter the collected original sound signal based on a preset propeller sound frequency to obtain a sound signal; store the obtained sound signal or send the obtained sound signal to a client.
  • the embodiment of the invention can combine the aircraft with a projection module such as a projector, and can quickly change the projection position as needed by controlling the flight of the aircraft, thereby realizing quick and flexible image projection.
  • a projection module such as a projector
  • FIG. 1 is a schematic flow chart of an aircraft-based image projection method according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of another aircraft-based image projection method according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an aircraft-based image projection apparatus according to an embodiment of the present invention
  • FIG. 5 is a schematic structural view of another aircraft-based image projection apparatus according to an embodiment of the present invention
  • FIG. 6 is a position adjustment of FIG. a schematic diagram of the module
  • FIG. 7 is a schematic structural view of an aircraft according to an embodiment of the present invention.
  • Embodiments of the present invention can pass an aircraft such as a UAV (Unmanned Aerial Vehicle)
  • a projection device such as a projector
  • FIG. 1 is a schematic flowchart of an aircraft-based image projection method according to an embodiment of the present invention.
  • the method in the embodiment of the present invention may be implemented by a controller provided in an aircraft. Specifically, the method includes :
  • adjusting the position of the aircraft comprises: adjusting an position of the aircraft according to an image of the obstacle acquired in a projection direction of the aircraft projection module.
  • Conditions that conform to the projectable position include: A certain height is reached and the projection direction of the aircraft projection module (front of the projection lens) has a plane or an approximate plane such as a white wall, a curtain, or the like that can project an image.
  • the position adjustment of the aircraft may be triggered by a command sent by the user to the controller of the aircraft through a remote controller.
  • the controller controls the power system of the aircraft, which is composed of a motor, an electric control, a propeller, etc., to perform related operations, and adjusts the aircraft to be projectable by flight.
  • Position the area in front of the position is sufficient to complete the projected area, and the area is white, and the distance from each point to the ranging module satisfies the obstacle plane such as the wall surface required by the flat plane.
  • the position of the aircraft may be: adjusted based on the pixel value of the obstacle picture in the captured projection direction, and the detected distance of each point of the obstacle to the aircraft. That is, it can be automatically adjusted based on the data obtained by the camera and the distance measuring device set by the aircraft, and can be processed by the controller of the aircraft itself.
  • the subject color, texture, and the like of the obstacle are determined based on the pixel value, and the distance between the obstacle and the projection lens, the tilt angle with respect to the projection lens or the ground, and the like are determined based on the distance measuring device.
  • the obstacles meeting the projection conditions are comprehensively determined, and the position at which the obstacles satisfying the condition are determined is taken as the projectable position.
  • the image projection event may be detected when the user controls the projector to prepare for projection through the projection remote controller, or when the user issues a projection command to the aircraft through the remote controller of the femtophone.
  • a projection module such as a projector can be externally attached to the aircraft and fixed and controlled by the aircraft pan/tilt. It can also be fixed on the aircraft and connected to the controller signal of the aircraft.
  • S102 Trigger an aircraft projection module to project an image.
  • the aircraft After the aircraft flies to the position (projectable position) of the appropriate projected image, it provides sufficient power to the projection module such as the projector, so that the projector can be wireless, etc. based on the ground-based computer, smartphone, etc. Data such as videos, pictures, and files transmitted in a way.
  • the data required for projection may also be data stored in a storage device built in or external to the aircraft or the projector.
  • the projection module reads the data in the storage module and projects it onto the wall or the screen in the projection direction. on.
  • the projection playback of the projection module can be controlled by a remote controller that is matched with the projection module in advance, for example, controlling the progress of the projection playback, the brightness of the projection, and the like.
  • the image projection method of the embodiment of the invention may be implemented indoors or outdoors.
  • the positional automatic hold control such as hovering can be performed on the aircraft based on the GPS data.
  • the indoors it is possible to comprehensively control the automatic position control such as hovering of the aircraft based on sensing modules such as gyroscopes, accelerometers, altimeters, and vision sensors.
  • the embodiment of the invention can combine the aircraft with a projection module such as a projector, and can quickly change the projection position as needed by controlling the flight of the aircraft, thereby realizing quick and flexible image projection.
  • a projection module such as a projector
  • FIG. 2 is a schematic flowchart of another aircraft-based image projection method according to an embodiment of the present invention.
  • the method of the embodiment of the present invention may be implemented by a controller provided in an aircraft. Specifically, the method is as follows. Methods include:
  • adjusting the position of the aircraft comprises: adjusting an position of the aircraft according to an image of the obstacle obtained in a projection direction of the projection module.
  • the projection module includes a device such as a projector.
  • the projection module can be externally attached to the aircraft and fixed to the aircraft by means of a pan/tilt provided by the aircraft. It can also be connected to the controller signal of the aircraft in the aircraft.
  • the projection module can receive files, pictures, and videos waiting for the 'projected data' transmitted by the computer on the ground side, the smartphone, and the like based on the wireless communication method.
  • the data required for projection can also be data stored in a storage device built in or external to the aircraft or projector.
  • the projection module reads the data in the storage module and projects it onto the wall or the screen in the projection direction. on.
  • S203 Record location information of the projectable position, where the location information includes: coordinate information and height information.
  • the coordinate information can be obtained by GPS
  • the height information can be based on a barometer or a distance measuring device such as an ultrasonic wave or a camera.
  • S205 If the recording operation is detected, the aircraft sound pickup module is called to collect the original sound signal.
  • S206 Filter the collected original sound signal based on the preset propeller sound frequency to obtain a sound signal.
  • S207 Store the obtained sound signal or send the obtained sound signal to the client. After the original sound signal is obtained, the original analog sound signal can be converted into a digital signal by analog/digital conversion, and the client can convert the digital sound signal into an analog signal projection when projecting the sound signal.
  • FIG. 3 is a schematic flowchart of a method for adjusting an aircraft to a projectable position according to an embodiment of the present invention.
  • the method in the embodiment of the present invention is an automatic adjustment to adjust an aircraft position to suit For projection, it may correspond to S101 or S201 described above.
  • the method includes -:
  • S301 if an image projection event to the aircraft is detected, adjusting the position of the aircraft; when detecting a remote control signal for projecting the projection of the projection module, etc., starting the position adjustment operation of the aircraft, including powering up, taking off, and Steps such as position determination detection.
  • the obstacle refers to an obstacle in a projection direction of the aircraft projection module.
  • the obstacle can be detected by visual recognition and ranging, and it is judged whether the obstacle existing in the projection direction of the projection module such as the projector satisfies the preset condition.
  • the background conditions for the projection are as follows: The color is white (or the pixel value is within the preset pixel value range), and the image texture is small (or the variation of the distance from each position point to the ranging device in the region is preset) Within the amplitude range, the average distance to the distance measuring device and its area are within a preset numerical range, that is, the projection background condition is satisfied, and such an area can be used as a projection background. The best area is the white wall of the building or a curtain.
  • an image may be first collected based on the image capturing device, and an area whose color is white and has no texture or little texture is found based on the image. Then calculating the edge of the region based on the dual camera device, or laser ranging, or ultrasonic ranging, and calculating the area of the region according to the edge. If the measured distance and area can satisfy the normal projection of the projector, then the The obstacles corresponding to the white, untextured, distance, and area that satisfy the normal projection satisfy the preset projection background conditions.
  • the S302 may specifically include: obtaining, at the adjusted position, an edge of the currently existing obstacle, a distance from each position of the obstacle to the aircraft, and an image including the obstacle; The edge of the obstacle, the distance of each point of the obstacle, whether the color and texture features of the obstacle in the image satisfy a preset projection background condition; if the preset projection background condition is met, it is determined that the existence is satisfied A preset obstacle to the projected background condition.
  • the color and texture features of the region corresponding to the obstacle are obtained by the pixel values of the image, and the area of the corresponding region is obtained by the edge, and the flatness of the corresponding region is obtained by the distance of each position point (inclination, or unevenness of the concave and convex does not meet the condition ), it is finally determined whether a face of the obstacle to the display of the aircraft can be used as a projection wall or a projection screen.
  • the detection processing of the S302 is short in time, and in general, obstacles such as white walls that meet the conditions can be obtained relatively quickly.
  • Embodiments of the present invention can combine an aircraft with a projection module such as a projector, and can control the flight of the aircraft to quickly change the projection position as needed, and the determination of the appropriate projection area can be automatically realized based on the control, the camera, and the distance measuring device. , to achieve fast and flexible image projection, also meet the needs of user automation, intelligent.
  • a projection module such as a projector
  • FIG. 4 is a schematic structural diagram of an aircraft-based image projecting device according to an embodiment of the present invention
  • the device of the embodiment of the present invention may be disposed in a controller of an aircraft.
  • the device includes:
  • the position adjustment module 1 is configured to adjust the position of the aircraft to the projectable position when the image projection event of the aircraft is detected; wherein the position adjustment module 1 is specifically configured to detect an image projection event to the aircraft, The position of the aircraft is adjusted based on the image of the obstacle acquired in the projection direction of the projection module.
  • a projection control module 2 configured to trigger a projection module of the aircraft to project an image;
  • the conditions for conforming to the projectable position include: reaching a certain height and a plane or approximation of a projectable image such as a white wall or a curtain on the projection direction of the aircraft projection module (in front of the lens) flat.
  • the position adjustment module 1 performs position adjustment may be triggered by an instruction issued by a remote controller, and controls the power system of the aircraft to perform related operations, and adjusts the aircraft to a projectable position by flying, and the front area of the position is sufficient to complete the projection.
  • the area, and the area is white, and the distance between each point and the distance measuring module meets the obstacle plane such as the wall surface required by the flat plane.
  • the position adjustment module 1 performs position adjustment: the position adjustment module 1 adjusts according to the pixel value of the obstacle picture in the captured projection direction and the distance of the captured obstacle point to the aircraft. definite. That is, it can be automatically adjusted based on the data obtained by the camera and the distance measuring device set by the aircraft.
  • the position adjustment module 1 determines the body color, the texture, and the like of the obstacle based on the pixel value, and determines the distance of the obstacle relative to the projection lens based on the distance measuring device, the inclination angle with respect to the projection lens or the ground, and the like.
  • the position adjustment module 1 comprehensively judges an obstacle that meets the projection condition based on the obtained main body color, texture, distance, angle, and the like, and determines a position at which the conditional obstacle is determined as a projectable position.
  • the lens imaging direction of the imaging device is consistent with the projection direction of the projection module, and the distance measuring device may be formed by the ultrasonic device and/or the two imaging devices.
  • the camera device can capture a photo in the projection direction of the projection module, and then determine the color, texture, and the like of a certain plane in front of the pixel based on the pixel value of the pixel in the photo to ensure that the color of the image projection plane of the projection module is white or the like.
  • the color of the image projection can capture a photo in the projection direction of the projection module, and then determine the color, texture, and the like of a certain plane in front of the pixel based on the pixel value of the pixel in the photo to ensure that the color of the image projection plane of the projection module is white or the like. The color of the image projection.
  • the distance measuring device can measure the distance from each point in the detection range of the projection module to the aircraft or the distance measuring device, thereby determining the flatness of a plane in front, the approximate angle of the plane relative to the aircraft, and The angle of the ground, the edge of the plane and the area.
  • the position adjustment module 1 automatically controls the flight of the aircraft to a suitable projected image according to the measured color of a certain plane, the texture and the flatness of the plane, the approximate angle with respect to the aircraft, the angle with the ground, the plane edge and the area, and the like.
  • the position for example, at the current position, based on the image taken by the camera or the distance of each point detected by the distance measuring device, if it is determined that the area is sufficient to complete the projection of the projection module, and is white, the distance from each point to the ranging module A white wall whose value satisfies the flat plane requirements determines the current position as a suitable position.
  • the image projection event of the position adjustment module may be detected when the user controls the projector to prepare the projection through the projection remote controller, or the user issues a projection finger to the aircraft through the remote controller of the femto Detected by time.
  • a projection module such as a projector can be externally attached to the aircraft and fixed and controlled by the aircraft pan/tilt. It can also be fixed on the aircraft and connected to the controller signal of the aircraft.
  • the projection control module 2 After the aircraft flies to a position suitable for projecting an image (projectable position), the projection control module 2 provides sufficient power to a projection module such as a projector to enable the projector to wirelessly transmit from a computer such as a computer on the ground, a smart device, or the like. Projection of data coming in, including projection of data such as videos, pictures, and files. Of course, the data required for projection can also be data stored in a storage device built in or external to the aircraft or projector. When projecting, the projection module reads the data in the storage module and projects it onto the wall or the screen in the projection direction. on..
  • the image projection method of the embodiment of the invention may be implemented indoors or outdoors.
  • the positional automatic hold control such as hovering can be performed on the aircraft based on the GPS data.
  • the indoors it is possible to comprehensively control the automatic position control such as hovering of the aircraft based on sensing modules such as gyroscopes, accelerometers, altimeters, and vision sensors.
  • the embodiment of the invention can combine the aircraft with a projection module such as a projector, and can quickly change the projection position as needed by controlling the flight of the aircraft, thereby realizing quick and flexible image projection.
  • a projection module such as a projector
  • FIG. 5 is a schematic structural diagram of another aircraft-based image projection apparatus according to an embodiment of the present invention.
  • the apparatus of the embodiment of the present invention includes a position adjustment module 1 and a projection control module 2 in the previous embodiment. , progressively, also includes:
  • a storage module 3 configured to record location information of the projectable location, where the location information includes: coordinate information and altitude information;
  • the position adjustment module 1 is further configured to acquire coordinate data and height data of the aircraft during image projection, and compare the acquired coordinate data and height data with the coordinate information and the height information, and adjust based on the comparison result.
  • the position of the aircraft is maintained in the projectable position.
  • the coordinate information can be obtained by GPS, and the height information can be based on a barometer or an ultrasonic wave, a camera, and the like.
  • the jitter of the projection can be avoided or the jitter of the projection can be kept within a small jitter range.
  • the position adjustment module 1 includes:
  • the adjusting unit 11 is configured to adjust the position of the aircraft when an image projection event to the aircraft is detected
  • the detecting unit 12 is configured to detect, at the adjusted position, whether there is an obstacle that meets a preset projection background condition, and if not, notify the adjusting unit 11 to adjust the aircraft to a new position again; a determining unit 13 configured to determine a position at which the corresponding position can be projected if there is an obstacle satisfying the projected background condition;
  • the obstacle refers to an obstacle in a projection direction of the aircraft projector module.
  • the adjustment unit 11 starts the position of the aircraft, including power-on, take-off, and position determination detection.
  • the detecting unit 12 can detect an obstacle by visual recognition and ranging, and determine whether an obstacle existing in a projection direction of a projection module such as a projector satisfies a preset condition.
  • a projection module such as a projector satisfies a preset condition.
  • the detecting unit is specifically configured to acquire, at the adjusted position, an edge of the currently existing obstacle, a distance from each position of the obstacle to the aircraft, and an image including the obstacle; The edge of the obstacle, the distance of each point of the obstacle, whether the color and texture features of the obstacle in the image satisfy a preset projection background condition; if the preset projection background condition is met, it is determined that the existence is satisfied An obstacle that projects the background condition; if the preset projection background condition is not met, the adjustment unit is notified to adjust the aircraft to the new position again.
  • the device further includes:
  • the recording processing module 4 if the recording operation is detected, the aircraft sound pickup module is called to collect the original sound signal; and the collected original sound signal is filtered based on the preset propeller sound frequency to obtain a sound signal;
  • the output module 5 is configured to store the obtained sound signal or send the obtained sound signal to the client.
  • the original analog sound signal can be converted into a digital signal by analog/digital conversion, and when the client projects the sound signal, the digital sound signal is converted into an analog signal projection. can.
  • the embodiment of the invention can combine the aircraft with a projection module such as a projector, and can quickly change the projection position as needed only by controlling the flight of the aircraft, and the determination of the appropriate projection area can be automatically based on the control, the camera, the ranging device, and the like. Realization, fast and flexible image projection, also meet the needs of user automation and intelligence.
  • a projection module such as a projector
  • the aircraft of the embodiment of the present invention includes: a controller 100 and a hanging component for holding an external projection device, wherein the control The device 100 is configured to adjust a position of the aircraft to a projectable position when an image projection event to the aircraft is detected; and project a projection device that triggers the hanging component to hold the image; wherein Adjusting the position of the aircraft includes: adjusting the position of the aircraft based on an image of the obstacle acquired in the projection direction of the projection module.
  • controller 100 is further configured to record location information of the projectable position, where the location information includes: coordinate information and altitude information; in the image projection process, acquiring coordinate data and altitude data of the aircraft, The acquired coordinate data and height data are compared with the coordinate information and the height information, and the position of the aircraft is adjusted to be maintained at the projectable position based on the comparison result.
  • the aircraft further comprises:
  • the detector 200 is configured to detect an edge of a currently existing obstacle, a distance from each position of the obstacle to the aircraft, where the obstacle refers to an obstacle in a projection direction of the projection device hung by the hanging component;
  • a camera 300 configured to capture an image including the obstacle
  • the controller 100 is further configured to determine an edge of an obstacle sent by the detector 200, a distance of each position of the obstacle, a color and a texture feature of the obstacle captured by the camera 300 in an image. Whether the preset projection background condition is satisfied, and if the preset projection background condition is satisfied, it is determined that there is an obstacle satisfying the preset projection background condition.
  • controller 100 further includes
  • the pickup 400 is configured to call the aircraft pickup module to collect the original sound when the recording operation is detected.
  • the controller i00 is further configured to filter the collected original sound signal based on the preset propeller sound frequency to obtain a sound signal; store the sound signal or send the obtained sound signal to the client.
  • controller 100 For specific implementations of the controller 100, the detector 200, the camera 300, and the pickup 400 of the embodiment of the present invention, reference may be made to the description of the corresponding embodiments of FIG. 1 to FIG. 6 above.
  • the embodiment of the invention can combine the aircraft with a projection module such as a projector, and can quickly change the projection position as needed only by controlling the flight of the aircraft, and the determination of the appropriate projection area can be automatically based on the control, the camera, the ranging device, and the like. Realization, fast and flexible image projection, also meet the needs of user automation and intelligence.
  • a projection module such as a projector
  • the related apparatus and method disclosed may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, Or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separate, and the components displayed as the units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the unit formed, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer processor to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a USB flash drive, a mobile hard disk, and a read-only memory (R (XM, - Read- Only Memory)) and a memory card (-RAM, Random Access)
  • a variety of media that can store program code such as Memory), diskettes, or optical disks.

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Abstract

提供了一种基于飞行器的图像投影方法、装置及飞行器，其中，所述方法包括：若检测到对飞行器的图像投影事件，则调整飞行器的位置至可投影位置；触发飞行器投影模块投影图像；其中，所述调整飞行器的位置包括：根据在所述投影模块的投影方向上获取的障碍物的图像对飞行器的位置进行调整。能够将飞行器与投影仪等投影模块结合，只需控制飞行器飞行即可根据需要快速改变投影位置，实现快捷、灵活的图像投影。

Description

—种基于飞行器的圑像投影方法、 装置及飞行器
【技术领域】
本发明涉及电子技术领域， 尤其涉及 种基于飞行器的图像投影方法、 装 置及飞行器。
投影仅是一种可以将图像 （文件、 照片或视频） 投射到幕布上显示的装置。 其具体可以通过各种有线传输接口来与移动智能设备、 电脑等连接， 以投影相 应的文件、 照片以及视频等对应的图像。
现有的投影仪一般固定安装在一定高度上， 可以通过调整投影仪的位置及 其镜头完成与幕布的匹配， 使相关图像能够较好地投影到幕布上。
但是， 现有投影仪的位置比较固定、 不够灵活， 当需要在新位置投影图像 时拆装较为麻烦。
【发明内容】
本发明实施例提供了一种基于飞行器的图像投影方法、 装置及飞行器， 可 通过调整飞行器来灵活地在某些可投影位置上投影相关信息。
本发明实施例提供了一种基于飞行器的图像投影方法， 包括：
若检测到对飞行器的图像投影事件， 则调整飞行器的位置至可投影位置； 触发飞行器投影模块投影图像；
其中， 所述调整飞行器的位置包括： 根据在所述投影模块的投影方向上获 取的障碍物的图像对飞行器的位置进行调整。
其中可选的， 在所述调整飞行器的位置至可投影位置之后， 还包括： 记录该可投影位置的位置信息， 所述位置信息包括： 坐标信息和高度信息； 在图像投影过程中， 获取飞行器的坐标数据和高度数据， 并将获取的坐标 数据和高度数据对应与所述坐标信息和高度信息进行比较， 基于比较结果调整 飞行器的位置使其保持在所述可投影位置。
其中可选的， 所述若检测到对飞行器的图像投影事件， 则调整飞行器的位 置至可投影位置， 包括：
若检测到对飞行器的图像投影事件， 则调整飞行器的位置； 在调整后的位置处， 检测是否存在满足预设的投影背景条件的障碍物， 若 不存在， 则调整飞行器到新的位置， 重复执行本步骤， 直至确定出所述障碍物 满足预设的投影背景条件；
如果存在满足投影背景条件的障碍物， 則将对应.的位置确定可投影位置； 其中， 所述的障碍物是指所述飞行器投影模块的投影方向上的障碍物。 其中可选的， 所述检测是否存在满足预设的投影背景条件的障碍物， 包括： 在调整后的位置处， 获取当前存在的障碍物的边沿、 该障碍物各个位置点 到飞行器的距离、 以及包括该障碍物的图像；
判断所述障碍物的边沿、 该障碍物各个位置点的距离、 所述障碍物在图像 中的颜色和紋理特征是否满足预设的投影背景条件；
若满足预设的投影背景条件， 则确定存在满足预设的投影背景条件的障碍 物。
其中可选的， 所述方法还包括：
若检测到录音搡作， 则调用飞行器拾音模块采集原始声音信号；
基于预设的螺旋桨声音频率对采集到的原始声音信号进行滤波， 得到声音 信号；
存储得到所述声音信号或将得到的所述声音信号发送给客户端。
相应地， 本发明实施 还提供了一种基于飞行器的图像投影装置， 包括： 位置调整模块， 用于在检测到对飞行器的图像投影事件时， 调整飞行器的 位置至可投影位置；
投影控制模块， 用于触发飞行器的投影模块投影图像；
其中， 所述位置调整模块， 具体用于在检测到对飞行器的图像投影事件时， 根据在所述投影模块的投影方向上获取的障碍物的图像对飞行器的位置进行调 整。
其中可选地， 所述装置还包括：
存储模块， 用于记录该可投影位置的位置信息， 所述位置信息包括： 坐标 信息和高度信息；
所述位置调整模块， 还用于在图像投影过程中， 获取飞行器的坐标数据和 高度数据， 并将获取的坐标数据和高度数据对应与所述坐标信息和高度信息进 行比较， 基于比较结果调整飞行器的位置使其保持在所述可投影位置。
其中可选地， 所述位置调整模块包括： 调整单元， 用于在检测到对飞行器的图像投影事件时， 调整飞行器的位置; 检测单元， 用于在调整后的位置处， 检测是否存在满足预设的投影背景条 件的障碍物， 若不存在， 则通知所述调整单元再次调整飞行器到新的位置； 确定单元， 用于如果存在满足投影背景条件的障碍物， 则将对应的位置确 定可投影位置；
其中， 所述的障碍物是指所述飞行器投影模块的投影方向上的障碍物。 其中可选地， 所述检测单元， 具体用于在调整后的位置处， 获取当前存在 的障碍物的边沿、 该障碍物各个位置点到飞行器的距离、 以及包括该障碍物的 图像； 判断所述障碍物的边沿、 该障碍物各个位置点的距离、 所述障碍物在图 像中的颜色和紋理特征是否满足预设的投影背景条件； 若满足预设的投影背景 条件， 则确定存在满足预设的投影背景条件的障碍物； 若不满足预设的投影背 景条件則通知所述调整单元再次调整飞行器到新的位置。
其中可选地， 所述装置还包括：
录音处理模块， 若检测到录音搡作， 则调用飞行器拾音模块采臬原始声音 信号； 并基于预设的螺旋桨声音频率对采集到的原始声音信号进行滤波， 得到 声音信号；
输出模块， 用于存储得到所述声音信号或将得到的所述声音信号发送给客 户端。
相应地， 本发明实施例还提供了一种飞行器， 包括： 控制器和用于挂持外 部投影装置的挂持组件， 其中，
所述控制器， 用于在检测到对飞行器的图像投影事件时， 调整飞行器的位 置至可投影位置； 触发所述挂持组件挂持的投影装置投影图像； 其中， 所述调 整飞行器的位置包括： 根据在所述投影模块的投影方向上获取的障碍物的图像 对飞行器的位置进行调整。
其中可选地， 所述控制器， 还用于记录该可投影位置的位置信息， 所述位 置信息包括： 坐标信息和高度信息； 在图像投影过程中， 获取飞行器的坐标数 据和高度数据， 并将获取的坐标数据和高度数据对应与所述坐标信息和高度信 息进行比较， 基于比较结果调整飞行器的位置使其保持在所述可投影位置。
其中可选地， 所述飞行器还包括：
探测器， 用于探测当前存在的障碍物的边沿、 该障碍物各个位置点到飞行 器的距离， 所述障碍物是指所述挂持组件挂持的投影装置的投影方向上的障碍 物；
摄像器， 用于拍摄包括所述障碍物的图像；
所述控制器， 还用于判断所述探测器发送的障碍物的边沿、 该障碍物各个 位置点的距离、 所述摄像器拍摄的所述障碍物在图像中的颜色和紋理特征是否 满足预设的投影背景条件， 若满足预设的投影背景条件， 则确定存在满足预设 的投影背景条件的障碍物。
其中可选地， 所述飞行器还包括：
拾音器， 用于在检测到录音搡作时， 调用飞行器拾音模块采集原始声音信 号；
所述控制器， 还用于基于预设的螺旋桨声音频率对采集到的原始声音信号 进行滤波， 得到声音信号； 存储得到所述声音信号或将得到的所述声音信号发 送给客户端。
本发明实施例能够将飞行器与投影仪等投影模块结合， 只需控制飞行器飞 行即可根据需要快速改变投影位置， 实现快捷、 灵活的图像投影。
【»图说明】
图 1是本发明实施例的一种基于飞行器的图像投影方法的流程示意图； 图 2是本发明实施例的另一种基于飞行器的图像投影方法的流程示意图 图 3 是本发明实施例的一种将飞行器调整至可投影位置的方法的流程示意 图；
图 4是本发明实施例的 种基于飞行器的图像投影装置的结抅示意图； 图 5是本发明实施例的另一种基于飞行器的图像投影装置的结构示意图； 图 6是图 5中的位置调整模块的一种结抅示意图；
图 7是本发明实施例的一种飞行器的结构示意图。
【具体实施方式 1
下面将结合本发明实施例中的 ft] "图， 对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是 全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有做出创造 性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。
本发明实施例能够通过 UAV (Unmanned Aerial Vehicle, 无人机） 等飞行器 与投影仪等投影装置相结合， 实现在某些具有诸如白墙、 幕布等场景的可投影 位置处触发投影仪投影相关图像数据。
具体请参见图 1，是本发明实施例的一种基于飞行器的图像投影方法的流程 示意图， 本发明实施例的所述方法可以由飞行器中设置的控制器来实现， 具体 的， 所述方法包括：
S101 : 若检测到对飞行器的图像投影事件， 则调整飞行器的位置至可投影 位置
其中， 所述调整飞行器的位置包括： 根据在飞行器投影模块的投影方向上 获取的障碍物的图像对飞行器的位置进行调整。
符合可投影位置的条件包括： 达到一定高度且飞行器投影模块的投影方向 上 （投影镜头前方） 存在如白墙、 幕布等可投影图像的平面或近似平面。
飞行器进行位置调整可以是用户通过遥控器对飞行器的控制器发出的指令 触发， 控制器控制飞行器的由电机、 电调、 螺旋桨等构成的动力系统执行相关 搡作， 通过飞行来调整飞行器至可投影位置， 该位置的前方存在面积足够完成 投影的区域， 且该区域为白色、 各个点到测距模块的距离值满足平整平面要求 的墙面等障碍物平面。
或者， 飞行器的位置可以是： 基于拍摄到的投影方向上的障碍物图片的像 素值、 以及检测到的该障碍物各个点到飞行器的距离来调整确定的。 即可以基 于飞行器设置的摄像装置和测距装置获得的数据来自动调整得到， 可以由飞行 器自身的控制器进行处理得到。 其中， 基于像素值确定障碍物的主体颜色、 紋 路等， 基于测距装置則确定障碍物相对于投影镜头的距离， 相对于投影镜头或 地面的倾斜角度等信息。 基于得到的主体颜色、 紋理、 距离、 角度等信息来综 合判断符合投影条件的障碍物， 并将确定出符合条件的障碍物时所在的位置作 为可投影位置。
图像投影事件可以是用户通过投影遥控器控制投影仪预备投影时检测到 的， 或者是用户通过飞信器的遥控器对飞行器发出投影指令时检测到的。
投影仪等投影模块可以外挂在所述飞行器上， 由飞行器云台固定并控制。 也可以固设于飞行器上， 与飞行器的控制器信号相连。
S102 : 触发飞行器投影模块投影图像。
飞行器飞行至合适投影图像的位置 （可投影位置） 后， 即提供给投影仪等 投影模块足够的电源， 使投影仪基于地面的电脑、 智能手机等设备通过无线等 方式传输过来的视频、 图片以及文件等数据。
当然， 投影所需的数据也可以是飞行器或者投影钗中内置或外挂的存储设 备中存储的数据， 在投影时， 投影模块读取存储模块中的数据投影到投影方向 上的墙面上或幕布上。 通过预先与投影模块匹配好的遥控器， 可以对投影模块 的投影播放进行控制， 例如控制投影播放的进度， 投影的亮度等进行控制。
本发明实施例的所述图像投影方法可以在室内或者室外实现。其中，在 GPS 信号较好的室外时，可以基于 GPS数据对飞行器执行悬停等位置自动保持控制。 而在室内时， 则可以基于陀螺仪、 加速度计、 高度计以及视觉传感器等传感模 块来综合完成飞行器的悬停等位置自动保持控制。
本发明实施例能够将飞行器与投影仪等投影模块结合， 只需控制飞行器飞 行即可根据需要快速改变投影位置， 实现快捷、 灵活的图像投影。
再请参见图 2，是本发明实施例的另一种基于飞行器的图像投影方法的流程 示意图， 本发明实施例的所述方法可以由飞行器中设置的控制器来实现， 具体 的， 所述.方法包括:
S201 : 若检测到对飞行器的图像投影事件， 则调整飞行器的位置至可投影 位置；
其中， 所述调整飞行器的位置包括： 根据在所述投影模块的投影方向上获 取的障碍物的图像对飞行器的位置进行调整。
S202 : 触发飞行器投影模块投影图像。
投影模块包括投影仪等设备。 该投影模块具体可以外挂在飞行器上， 通过 飞行器提供的云台等装置固定于飞行器。 也可以内设与飞行器中， 与飞行器的 控制器信号相连。
投影模块可以基于无线通信方式接收地面端的电脑、 智能手机等设备传输 的文件、 图片以及视频等待'投影的数据。 当然， 投影所需的数据也可以是飞行 器或者投影仪中内置或外挂的存储设备中存储的数据， 在投影时， 投影模块读 取存储模块中的数据投影到投影方向上的墙面上或幕布上。
S203： 记录该可投影位置的位置信息， 所述位置信息包括： 坐标信息和高 度信息。
S204 : 在图像投影过程中， 获取飞行器的坐标数据和高度数据， 并将获取 的坐标数据和高度数据对应与所述坐标信息和高度信息进行比较， 基于比较结 果调整飞行器的位置使其保持在所述可投影位置。 其中， 坐标信息可以通过 GPS获得， 高度信息则可以基于气压计或者超声 波、 摄像头等测距装置。 通过所述 S203和 S204, 可以避免投影的抖动或者使投 影的抖动保持在一个很小的抖动幅度内。
S205 : 若检测到录音搡作， 則调用飞行器拾音模块采集原始声音信号。 S206 : 基于预设的螺旋桨声音频率对采集到的原始声音信号进行滤波， 得 到声音信号。
S207： 存储得到所述声音信号或将得到的所述声音信号发送给客户端。 在得到原始声音信号后可以通过模拟 /数字转换， 将原始的模拟声音信号转 换为数字信号， 客户端在投影声音信号时， 再将数字声音信号转换为模拟信号 投影即可。
进一步具体的， 请参见图 3， 是本发明实施例的一种将飞行器调整至可投影 位置的方法的流程示意图， 本发明实施例的所述方法为一种自动调整对飞行器 位置进行调整以便适于投影， 其可以对应于上述的 S101或 S201， 具体的， 所述 方法包括-：
S301 : 若检测到对飞行器的图像投影事件， 则调整飞行器的位置； 在检测到对投影钗等投影模块的开始投影的遥控信号时， 则开始飞行器的 位置调整橾作， 包括上电、 起飞以及位置判断检测等步骤。
S302 : 在调整后的位置处， 检测是否存在满足预设的投影背景条件的障碍 物。 其中， 所述的障碍物是指所述飞行器投影模块的投影方向上的障碍物。 具 体可以通过视觉识别和测距的方式来对障碍物进行检测， 判断投影仪等投影模 块的投影方向上存在的障碍物是否满足预设的条件。
简单来讲， 满足投影背景条件包括： 颜色为白色 （或像素值在预设的像素 值范围内）， 图像紋理少 （或区域上各个位置点到测距装置的距离的变化幅度在 预设的幅度范围内）， 到测距装置的平均距离以及其面积都在预设的数值范围 内， 即满足投影背景条件， 这样的区域可以作为投影背景使用。 最好的区域为 建筑物的白墙或设置的一块幕布。
具体的， 在所述 S302中， 首先可以基于摄像装置采集图像， 并基于图像找 到颜色为白色且无紋理或者极少紋理的区域。 然后基于双摄像装置， 或者激光 测距， 或者超声波测距来计算出该区域的边沿， 并根据边沿测算出该区域的面 积， 如果测得的距离和面积可以满足投影仪的正常投影， 则该白色的、 无紋理、 距离和面积满足正常投影的区域所对应的障碍物满足预设的投影背景条件。 在本发明实施例中， 所述 S302具体可以包括： 在调整后的位置处， 获取当 前存在的障碍物的边沿、 该障碍物各个位置点到飞行器的距离、 以及包括该障 碍物的图像; 判断所述障碍物的边沿、 该障碍物各个位置点的距离、 所述障碍 物在图像中的颜色和紋理特征是否满足预设的投影背景条件； 若满足预设的投 影背景条件， 则确定存在满足预设的投影背景条件的障碍物。 即： 通过图像的 像素值得到该障碍物对应的区域的颜色和紋理特征， 通过边沿得到对应区域的 面积， 通过各个位置点的距离得到对应区域的平整程度 （倾斜、 或凹凸不平等 不符合条件）， 最终确定该障碍物对飞行器的展示的一个面是否可以作为投影背 景墙或投影幕布使用。
S303 : 若不存在， 则调整飞行器到新的位置。 重复至 S302， 直至确定出所 述障碍物满足预设的投影背景条件。
如果当前位置上不存在符合条件的障碍物， 則对动力系统发送指令， 移动 飞行器至新的位置， 再次对新探测到的障碍物进行判断。
需要说明的是， 所述 S302的检测处理过程耗时短， 一般情况下能够较快地 得到符合条件的白墙等障碍物。
S304 : 如果存在满足投影背景条件的障碍物， 则将对应的位置确定可投影 位置。
在确定了可投影位置后， 即结束上述的检测区域是否满足条件的橾作， 进 行后续的投影以及位置保持的控制。
本发明实施例能够将飞行器与投影仪等投影模块结合， 只需控制飞行器飞 行印可根据需要快速改变投影位置， 并且， 对合适的投影区域的判断可基于控 制、 摄像头以及测距装置等来自动实现， 实现快捷、 灵活的图像投影， 也满足 了用户自动化、 智能化的需求。
下面对本发明实施例基于飞行器的图像投影装置及飞行器进行详细描述。 请参见图 4，是本发明实施例的一种基于飞行器的图像投影装置的结构示意 图， 本发明实施例的所述装置可设置在飞行器的控制器中， 具体的， 所述装置 包括：
位置调整模块 1， 用于在检测到对飞行器的图像投影事件时， 调整飞行器的 位置至可投影位置； 其中， 所述位置调整模块 1， 具体用于在检测到对飞行器的 图像投影事件时， 根据在投影模块的投影方向上获取的障碍物的图像对飞行器 的位置进行调整。 投影控制模块 2， 用于触发飞行器的投影模块投影图像；
所述位置调整模块 1在调整飞行器的位置时， 符合可投影位置的条件包括： 达到一定高度且飞行器投影模块的投影方向上 （镜头前方） 存在如白墙、 幕布 等可投影图像的平面或近似平面。
所述位置调整模块 1进行位置调整可以是用户通过遥控器发出的指令触发， 控制飞行器的动力系统执行相关搡作， 通过飞行来调整飞行器至可投影位置， 该位置的前方存在面积足够完成投影的区域， 且该区域为白色、 各个点到测距 模块的距离值满足平整平面要求的墙面等障碍物平面。
或者， 所述位置调整模块 1 进行位置调整可以是： 所述位置调整模块 1 根 据拍摄到的投影方向上的障碍物图片的像素值、 以及拍摄到的该障碍物各个点 到飞行器的距离来调整确定的。 即可以基于飞行器设置的摄像装置和测距装置 获得的数据来自动调整得到。 其中， 所述位置调整模块 1 基于像素值确定障碍 物的主体颜色、 紋路等， 基于测距装置则确定障碍物相对于投影镜头的距离， 相对于投影镜头或地面的倾斜角度等信息。 所述位置调整模块 1 基于得到的主 体颜色、 紋理、 距离、 角度等信息来综合判断符合投影条件的障碍物， 并将确 定出符合条件的障碍物时所在的位置作为可投影位置。
具体的， 摄像装置的镜头摄像方向与投影模块的投影方向一致， 测距装置 则可以为超声波装置和 /或两个摄像装置抅成。 摄像装置能够拍摄获得投影模块 的投影方向上的照片， 然后基于该照片中像素点的像素值来确定前方某个平面 的颜色、 紋理等， 以保障投影模块的图像投影平面的颜色为白色等适合图像投 影的颜色。 测距装置則可以测得投影模块的投影方向上探测范围内的各个点到 飞行器或者测距装置的距离， 以此确定出前方某个平面的平整程度、 该平面相 对于飞行器的大致角度， 与地面的角度、 平面边沿及面积等。 所述位置调整模 块 1 根据测得的某个平面的颜色、 紋理和该平面的平整程度、 相对于飞行器的 大致角度、 与地面的角度、 平面边沿及面积等， 自动控制飞行器飞行至合适投 影图像的位置， 例如， 在当前位置下， 基于摄像装置拍摄的图片或测距装置探 测的各个点的距离， 如果确定出面积足够完成投影模块的投影， 且为白色、 各 个点到测距模块的距离值满足平整平面要求的白墙， 则将当前位置确定为合适 位置。
所述位置调整模块 〗 的图像投影事件可以是用户通过投影遥控器控制投影 仪预备投影时检测到的， 或者是用户通过飞信器的遥控器对飞行器发出投影指 令时检测到的。
投影仪等投影模块可以外挂在所述飞行器上， 由飞行器云台固定并控制。 也可以固设于飞行器上， 与飞行器的控制器信号相连。
飞行器飞行至适合投影图像的位置 （可投影位置） 后， 所述投影控制模块 2 提供给投影仪等投影模块足够的电源， 使投影仪完成从地面的电脑、 智能乎机 等设备通过无线方式传输过来的数据的投影， 包括视频、 图片以及文件等数据 的投影。 当然， 投影所需的数据也可以是飞行器或者投影仪中内置或外挂的存 储设备中存储的数据， 在投影时， 投影模块读取存储模块中的数据投影到投影 方向上的墙面上或幕布上.。
本发明实施例的所述图像投影方法可以在室内或者室外实现。其中，在 GPS 信号较好的室外时，可以基于 GPS数据对飞行器执行悬停等位置自动保持控制。 而在室内时， 则可以基于陀螺仪、 加速度计、 高度计以及视觉传感器等传感模 块来综合完成飞行器的悬停等位置自动保持控制。
本发明实施例能够将飞行器与投影仪等投影模块结合， 只需控制飞行器飞 行即可根据需要快速改变投影位置， 实现快捷、 灵活的图像投影。
进一步再请参见图 5，是本发明实施例的另一种基于飞行器的图像投影装置 的结构示意图， 本发明实施例的所述装置包括上一实施例中的位置调整模块 1、 投影控制模块 2， 进 步地， 还包括：
存储模块 3， 用于记录该可投影位置的位置信息， 所述位置信息包括： 坐标 信息和高度信息；
所迷位置调整模块 1， 还用于在图像投影过程中， 获取飞行器的坐标数据和 高度数据， 并将获取的坐标数据和高度数据对应与所述坐标信息和高度信息进 行比较， 基于比较结果调整飞行器的位置使其保持在所述可投影位置。
其中， 坐标信息可以通过 GPS获得， 高度信息则可以基于气压计或者超声 波、 摄像头等测距装置。 通过所述存储模块 3和位置调整模块 1， 可以避免投影 的抖动或者使投影的抖动保持在一个很小的抖动幅度内。
进一步可具体的， 如图 6所示， 所述位置调整模块 1包括：
调整单元 11， 用于在检测到对飞行器的图像投影事件时， 调整飞行器的位 置
检测单元 12， 用于在调整后的位置处， 检测是否存在满足预设的投影背景 条件的障碍物， 若不存在， 则通知所述调整单元 11再次调整飞行器到新的位置； 确定单元 13， 用于如果存在满足投影背景条件的障碍物， 则将对应的位置 确定可投影位置；
其中， 所述的障碍物是指所迷飞行器投影模块的投影方向上的障碍物。 在检测到对投影仪等投影模块的开始投影的遥控信号时， 所述调整单元 11 即开始飞行器的位置， 包括上电、 起飞以及位置判断检测等搡作。
所述检测单元 12 具体可以通过视觉识别和测距的方式来对障碍物进行检 测， 判断投影仪等投影模块的投影方向上存在的障碍物是否满足预设的条件。 具体的检测判断方式可参考上述方法项实施例的描述。
具体可选地， 所述检测单元， 具体用于在调整后的位置处， 获取当前存在 的障碍物的边沿、 该障碍物各个位置点到飞行器的距离、 以及包括该障碍物的 图像； 判断所述障碍物的边沿、 该障碍物各个位置点的距离、 所述障碍物在图 像中的颜色和紋理特征是否满足预设的投影背景条件； 若满足预设的投影背景 条件， 则确定存在满足预设的投影背景条件的障碍物； 若不满足预设的投影背 景条件则通知所述调整单元再次调整飞行器到新的位置。
进一步地， 在本发明实施例中， 所述装置还包括：
录音处理模块 4， 若检测到录音操作， 则调用飞行器拾音模块采集原始声音 信号； 并基于预设的螺旋桨声音频率对采集到的原始声音信号进行滤波， 得到 声音信号；
输出模块 5， 用于存储得到所述声音信号或将得到的所述声音信号发送给客 户端。
在所述录音处理模块 4采集得到原始声音信号后可以通过模拟 /数字转换， 将原始的模拟声音信号转换为数字信号， 客户端在投影声音信号时， 再将数字 声音信号转换为模拟信号投影即可。
本发明实施例能够将飞行器与投影仪等投影模块结合， 只需控制飞行器飞 行即可根据需要快速改变投影位置， 并且， 对合适的投影区域的判断可基于控 制、 摄像头以及测距装置等来自动实现， 实现快捷、 灵活的图像投影， 也满足 了用户自动化、 智能化的需求。
再请参见图 7， 是本发明实施例的一种飞行器的结构示意图， 本发明实施例 的所述飞行器包括： 控制器 100和用于挂持外部投影装置的挂持组件， 其中， 所述控制器 100， 用于在检测到对飞行器的图像投影事件时， 调整飞行器的 位置至可投影位置； 触发所述挂持組件挂持的投影装置投影图像； 其中， 所述 调整飞行器的位置包括： 根据在所述投影模块的投影方向上获取的障碍物的图 像对飞行器的位置进行调整。
进一步可选地， 所述控制器 100， 还用于记录该可投影位置的位置信息， 所 述位置信息包括： 坐标信息和高度信息； 在图像投影过程中， 获取飞行器的坐 标数据和高度数据， 并将获取的坐标数据和高度数据对应与所述坐标信息和高 度信息进行比较， 基于比较结果调整飞行器的位置使其保持在所述可投影位置。
进 步可选地， 所述飞行器还包括：
探测器 200， 用于探测当前存在的障碍物的边沿、 该障碍物各个位置点到飞 行器的距离， 所述障碍物是指所述挂持組件挂持的投影装置的投影方向上的障 碍物；
摄像器 300， 用于拍摄包括所述障碍物的图像；
所述控制器 100， 还用于判断所述探测器 200发送的障碍物的边沿、 该障碍 物各个位置点的距离、 所述摄像器 300 拍摄的所述障碍物在图像中的颜色和紋 理特征是否满足预设的投影背景条件， 若满足预设的投影背景条件， 则确定存 在满足预设的投影背景条件的障碍物。
进一步可选地， 所述控制器 100还包括
拾音器 400， 用于在检测到录音搡作时， 调用飞行器拾音模块采集原始声音 ^
1 Γ5 ；
所述控制器 i00，还用于基于预设的螺旋桨声音频率对采集到的原始声音信 号进行滤波， 得到声音信号； 存储得到所述声音信号或将得到的所述声音信号 发送给客户端。
具体的， 本发明实施例的所述控制器 100、 探测器 200、 摄像器 300以及拾 音器 400的具体实现可参考上述图 1至图 6对应实施例的描述。
本发明实施例能够将飞行器与投影仪等投影模块结合， 只需控制飞行器飞 行即可根据需要快速改变投影位置， 并且， 对合适的投影区域的判断可基于控 制、 摄像头以及测距装置等来自动实现， 实现快捷、 灵活的图像投影， 也满足 了用户自动化、 智能化的需求。
在本发明所提供的几个实施例中， 应该理解到， 所揭露的相关装置和方法， 可以通过其它的方式实现。 例如， 以上所描述的装置实施例仅仅是示意性的， 例如， 所述模块或单元的划分， 仅仅为一种逻辑功能划分， 实际实现时可以有 另外的划分方式， 例如多个单元或組件可以结合或者可以集成到另一个系统， 或一些特征可以忽略， 或不执行。 另一点， 所显示或讨论的相互之间的耦合或 直接耦合或通信连接可以是通过一些接口， 装置或单元的间接耦合或通信连接， 可以是电性， 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的， 作为 单元显示的部件可以是或者也可以不是物理单元， 即可以位于一个地方， 或者 也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或者全部 单元来实现本实施例方案的目的。
另外， 在本发明各个实施例中的各功能单元可以集成在一个处理单元中， 也可以是各个单元单独物理存在， 也可以两个或两个以上单元集成在一个单元 中。 上述集成的单元既可以采用硬件的形式实现， 也可以采用软件功能单元的 形式实现。
所述臬成的单元如果以软件功能单元的形式实现并作为独立的产品销售或 使用时， 可以存储在一个计算机可读取存储介质中。 基于这样的理解， 本发明 的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或 部分可以以软件产品的形式体现出来， 该计算机软件产品存储在一个存储介质 中， 包括若干指令用以使得计算机处理器 （processor)执行本发明各个实施例所 述方法的全部或部分步骤。 而前述的存储介质包括： U 盘、 移动硬盘、 只读存 器 (R(XM， —Read- Only Memory) 随才几存耳又存 1¾器 (—RAM, Random Access
Memory)、 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本发明的实施例， 并非因此限制本发明的专利范围， 凡是利 用本发明说明书及附图内容所作的等效结构或等效流程变换， 或直接或间接运 用在其 相关的技术领域， 均同理包括在本发明的专利保护范围内。

Claims

杈 利 要 求
1、 一种基于飞行器的图像投影方法， 其特征在于， 包括：
若检测到对飞行器的图像投影事件， 则调整飞行器的位置至可投影位置； 触发飞行器投影模块投影图像；
其中， 所述调整飞行器的位置包括： 根据在所述投影模块的投影方向上获 取的障碍物的图像对飞行器的位置进行调整。
2、 如权利要求 i所述的方法， 其特征在于， 在所述调整飞行器的位置至可 投影位置之后， 还包括：
记录该可投影位置的位置信息， 所述位置信息包括： 坐标信息和高度信息； 在图像投影过程中， 获取飞行器的坐标数据和高度数据， 并将获取的坐标 数据和高度数据对应与所述坐标信息和高度信息进行比较， 基于比较结果调整 飞行器的位置使其保持在所述可投影位置。
3、 如权利要求 1所述的方法， 其特征在于， 所述若检测到对飞行器的图像 投影事件， 则调整飞行器的位置至可投影位置， 包括：
若检测到对飞行器的图像投影事件， 则调整飞行器的位置；
在调整后的位置处， 检测是否存在满足预设的投影背景条件的障碍物， 若 不存在， 则调整飞行器到新的位置， 重复执行本步骤， 直至确定出存在满足预 设的投影背景条件的障碍物；
如果存在满足投影背景条件的障碍物， 则将对应的位置确定为可投影位置； 其中， 检测的是所述飞行器投影模块的投影方向上的障碍物。
4、 如权利要求 3所述的方法， 其特征在于， 所述检测是否存在满足预设的 投影背景条件的障碍物， 包括：
在调整后的位置处， 获取当前存在的障碍物的边沿、 该障碍物各个位置点 到飞行器的距离、 以及包括该障碍物的图像；
判断所述障碍物的边沿、 该障碍物各个位置点的距离、 所述障碍物在图像 中的颜色和紋理特征是否满足预设的投影背景条件；
若满足预设的投影背景条件， 则确定存在满足预设的投影背景条件的障碍 5、 如权利要求 1所述的方法， 其特征在于， 还包括：
若检测到录音搡作， 则调用飞行器拾音模块采集原始声音信号；
基于预设的螺旋桨声音频率对采集到的原始声音信号进行滤波， 得到声音 信号：
存储得到所述声音信号或将得到的所述声音信号发送给客户端。
6、 一种基于飞行器的图像投影装置， 其特征在于， 包括：
位置调整模块， 用于在检测到对飞行器的图像投影事件时， 调整飞行器的 位置至可投影位置；
投影控制模块， 用于触发飞行器的投影模块投影图像；
其中， 所述位置调整模块， 具体用于在检测到对飞行器的图像投影事件时， 根据在所述投影模块的投影方向上获取的障碍物的图像对飞行器的位置进行调
7、 如权利要求 6所述的装置， 其特征在于， 还包括：
存储模块， 用于记录该可投影位置的位置信息， 所述位置信息包括： 坐标 信息和高度信息；
所述位置调整模块， 还用于在图像投影过程中， 获取飞行器的坐标数据和 高度数据， 并将获取的坐标数据和高度数据对应与所述坐标信息和高度信息进 行比较， 基于比较结果调整飞行器的位置使其保持在所述可投影位置。
8、 如权利要求 6所述的装置， 其特征在于， 所述位置调整模块包括： 调整单元， 用于在检测到对飞行器的图像投影事件时， 调整飞行器的位置； 检测单元， 用于在调整后的位置处， 检测是否存在满足预设的投影背景条 件的障碍物， 若不存在， 则通知所述调整单元再次调整飞行器到新的位置； 确定单元， 用于如果存在满足投影背景条件的障碍物， 则将对应的位置确 定可投影位置；
其中， 所述检测单元检测的是所述飞行器投影模块的投影方向上的障碍物。 9、 如权利要求 8所述的装置， 其特征在于，
所述检测单元， 具体用于在调整后的位置处， 获取当前存在的障碍物的边 沿、 该障碍物各个位置点到飞行器的距离、 以及包括该障碍物的图像； 判断所 述障碍物的边沿、 该障碍物各个位置点的距离、 所述障碍物在图像中的颜色和 紋理特征是否满足预设的投影背景条件； 若满足预设的投影背景条件， 则确定 存在满足预设的投影背景条件的障碍物； 若不满足预设的投影背景条件则通知 所述调整单元再次调整飞行器到新的位置。
10、 如权利要求 6所述的装置， 其特征在于， 还包括：
录音处理模块， 若检测到录音搡作， 则调用飞行器拾音模块采集原始声音 信号； 并基于预设的螺旋桨声音频率对采集到的原始声音信号进行滤波， 得到 声音信号；
输出模块， 用于存储得到所述声音信号或将得到的所述声音信号发送给客 户端。
1 —种飞行器， 其特征在于， 包括： 控制器和用于挂持外部投影装置的 挂持组件， 其中，
所述控制器， 用于在检测到对飞行器的图像投影事件时， 调整飞行器的位 置至可投影位置； 触发所述挂持组件挂持的投影装置投影图像； 其中， 所述调 整飞行器的位置包括： 根据在所述投影模块的投影方向上获取的障碍物的图像 对飞行器的位置进行调整。
12、 如权利要求 1 所述的飞行器， 其特征在于，
所述控制器， 还用于记录该可投影位置的位置信息， 所述位置信息包括： 坐标信息和高度信息； 在图像投影过程中， 获取飞行器的坐标数据和高度数据， 并将获取的坐标数据和高度数据对应与所述坐标信息和高度信息进行比较， 基 于比较结果调整飞行器的位置使其保持在所迷可投影位置。
13、 如权利要求 11所述的飞行器， 其特征在于， 还包括：
探测器， 用于探测当前存在的障碍物的边沿、 该障碍物各个位置点到飞行 器的距离， 所述探测器探测的是所述挂持组件挂持的投影装置的投影方向上的 障碍物；
摄像器， 用于拍摄包括所述障碍物的图像；
所述控制器， 还用于判断所述探测器发送的障碍物的边沿、 该障碍物各个 位置点的距离、 所述摄像器拍摄的所述障碍物在图像中的颜色和紋理特征是否 满足预设的投影背景条件， 若满足预设的投影背景条件， 则确定存在满足预设 的投影背景条件的障碍物。
14、 如权利要求 1】所述的飞行器， 其特征在于， 还包括：
拾音器， 用于在检测到录音操作时， 调用飞行器拾音模块采集原始声音信 号；
所述控制器， 还用于基于预设的螺旋桨声音频率对采集到的原始声音信号 进行滤波， 得到声音信号； 存储得到所述声音信号或将得到的所述声音信号发 送给客户端。
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