CN114360418A - Projection system - Google Patents

Abstract

Embodiments of the present invention provide a projection system, comprising: a projection device, an image acquisition device, and a control device, the projection device is used for projecting a projection image on a dynamic projection target, the image acquisition device is used for collecting the projection image on the dynamic projection target, and controls The device is used to compare the collected projection image with the predetermined projection target image, and control the projection device to adjust the projected projection image according to the comparison result. The technical scheme collects the projection image formed on the dynamic projection target through the image acquisition device, and compares the collected projection image with the predetermined projection target image through the control device, so as to form feedback on the quality of the projection image, so as to realize the automatic function of the projection device. Adaptive adjustment ensures the effect of the projected image on the dynamic projection target.

Description

Projection system

technical field

The present invention relates to the technical field of projection, and in particular, to a projection system.

Background technique

With the development of projection technology, the application of projection equipment is becoming more and more extensive. In places such as tourist attractions or city squares, projection equipment is often used to project projection images onto clouds in the sky, artificially formed smoke screens, waterfalls or other objects that can change dynamically to achieve the purpose of beautification.

However, for dynamically changing objects such as clouds in the sky, their thickness, shape, volume or position will change with the change of the external environment, and there is uncertainty, resulting in the image projected on it may be deformed, The predetermined projected image could not be formed.

SUMMARY OF THE INVENTION

The embodiments of the present invention propose a projection system to solve the above technical problems.

The projection system provided by the embodiment of the present invention includes: a projection device, an image acquisition device and a control device; the projection device is used for projecting a projection image on a dynamic projection target; the image acquisition device is used for collecting the projection image on the dynamic projection target; the control device It is used to compare the collected projection image with the predetermined projection target image, and control the projection device to adjust the projected projection image according to the comparison result.

In one embodiment, the dynamic projection target includes clouds, flying objects, smoke screens, water mist, water screens, or waterfalls.

In one embodiment, the control device is configured to compare the definition of the acquired projection image with the definition of the predetermined projection target image, and adjust the focal length of the projection device according to the comparison result.

In one embodiment, the control device is configured to compare the brightness of the acquired projection image with the brightness of the predetermined projection target image, and adjust the brightness of the projection image projected by the projection device according to the comparison result.

In one embodiment, the control device is configured to compare the color of the acquired projection image with the color of the predetermined projection target image, and adjust the color of the projection image projected by the projection device according to the comparison result.

In one embodiment, the projection system further includes a distance detection device, the distance detection device is used to detect the distance between the projection device and the dynamic projection target, and the control device is further configured to control the projection of the projection by the projection device according to the distance between the projection device and the dynamic projection target image to adjust.

In one embodiment, the projection system further includes a detection device, the detection device is configured to detect the spatial position information of the dynamic projection target, and the control device is further configured to control the dynamic projection target according to the spatial position information of the dynamic projection target. The projection device adjusts the direction and/or angle of the projected projected image.

In one embodiment, the projection apparatus includes a plurality of projection apparatuses, each projection apparatus projects a sub-projection image, and the projection image is formed by splicing or superimposing a plurality of sub-projection images.

In one embodiment, the control device generates the predetermined projection target image according to the distance between the projection device and the dynamic projection target, the type of the dynamic projection target and the image to be projected.

In one embodiment, the control device is configured to divide the acquired projection image and the predetermined projection target image into a plurality of corresponding regions, and control the projection device to adjust the relative regions of the projection image according to the comparison results of the regions.

Embodiments of the present invention provide a projection system, comprising: a projection device, an image acquisition device, and a control device, wherein the projection device is used for projecting a projection image on a dynamic projection target, the image acquisition device is used for collecting the projection image on the dynamic projection target, and controls The device is used to compare the collected projection image with the predetermined projection target image, and control the projection device to adjust the projected projection image according to the comparison result. The technical scheme collects the projection image formed on the dynamic projection target through the image acquisition device, and compares the collected projection image with the predetermined projection target image through the control device, so as to form feedback on the quality of the projection image, so as to realize the automatic function of the projection device. Adaptive adjustment ensures the effect of the projected image on the dynamic projection target.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a module frame diagram of a projection system provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a projection system according to an embodiment of the present invention.

Detailed ways

In order for those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Please refer to FIG. 1 . FIG. 1 is a module frame diagram of a projection system 100 according to an embodiment of the present invention. The projection system 100 includes a projection device 110 , an image acquisition device 120 and a control device 130 .

The projection device 110 is used for projecting the projection image on the dynamic projection target, the image acquisition device 120 is used for collecting the projection image on the dynamic projection target, and the control device 130 is used for comparing the collected projection image with the predetermined projection target image, and according to the comparison As a result, the projection device is controlled to adjust the projected projection image.

Specifically, the projection device 110 includes a light source unit, a light modulation unit, and a projection lens. The light source part is used for emitting illuminating light, and the light source part can be a laser light source, a laser fluorescent light source, an ultra-high pressure mercury lamp, etc., so that the light source part can emit high-brightness illuminating light. The light modulation part is used for modulating the illumination light according to the to-be-projected image to form projection light with image information. The image to be projected can be text, icon, picture, video or slideshow, etc. The light modulation part includes but is not limited to a digital micro-mirror device (Digital Micro-mirror Device, DMD), and can also be a liquid crystal display panel (Liquid Crystal Display, LCD) or liquid crystal on silicon (Liquid Crystal on Silicon, LCOS). The projection lens is used to project projection light with image information to the dynamic projection target, so as to form a projection image on the dynamic projection target.

Dynamic projection targets are objects whose reflectivity, thickness, shape, volume, or position can be dynamically changed. For example, dynamic projection targets may include clouds, flying objects, smoke screens, water mist, water screens, or waterfalls. In a specific embodiment, as shown in FIG. 2 , the dynamic projection target is a cloud layer in the sky, and the projection light emitted by the projection device 110 is projected onto the cloud layer, thereby forming a projection image. Projection images formed on clouds can be observed. Different from conventional projection screens or buildings, since the shape of clouds can change with weather conditions (wind, temperature, etc.) and has uncertainty, the projected image projected onto it may be deformed, thereby affecting the display of the projected image. Effect.

The image acquisition device 120 is used to acquire the projection image formed on the dynamic projection target. The image acquisition device 120 may be a camera device, and obtains the projection image formed on the dynamic projection target by shooting. The image acquisition device 120 may be an independent camera device, or may be a camera device integrated on the projection device 110 , which is not specifically limited herein. Preferably, the image acquisition device 120 collects the projection images formed on the dynamic projection target at preset time intervals. Since the shape of the dynamic projection target can change with time, the projection images formed on the dynamic projection target are collected at the preset time intervals, which can The deformation of the projection image on the dynamic projection target is detected in time. The preset time interval can be determined according to specific conditions. For dynamic projection targets with fast shape changes, the preset time interval can be set to a smaller value. For example, if the preset time interval is set to 1 second, for dynamic projection targets with slow shape changes Target, the preset time interval can be set larger, for example, set the preset time interval to 20 seconds.

The control device 130 is configured to receive the projection image collected by the image collection device 120, compare the collected projection image with a predetermined projection target image, and control the projection device 110 to adjust the projected projection image according to the comparison result. The control device 130 may be set independently, or may be integrated into the projection device 110, which is not specifically limited herein. The control device 130 generates a predetermined projection target image according to the distance between the projection device 110 and the dynamic projection target, the type of the dynamic projection target and the image to be projected. The distance between the projection device 110 and the dynamic projection target can be measured by the distance detection device. The type of the dynamic projection target It can be divided into different categories, and further determined by the detailed division of each category according to parameters related to projection imaging (such as reflectivity, thickness, shape, volume, etc.).

For example, in one embodiment, the control device 130 is used to compare the definition of the acquired projection image with the definition of the predetermined projection target image, and when the difference between the two is greater than a threshold, the control device 130 will use the comparison result according to the definition. Adjust the focal length of the projection device so that a clear projection image is formed on the dynamic projection target.

In yet another embodiment, the control device 130 is configured to compare the brightness of the collected projection image with the brightness of the predetermined projection target image, and when the difference in brightness between the two is greater than a threshold, the control device 130 adjusts the brightness projected by the projection device according to the comparison result. The brightness of the projected image, so that the projected image with the required brightness is formed on the dynamic projection target.

In another embodiment, the control device 130 is configured to compare the color of the acquired projection image with the color of the predetermined projection target image, and when the color difference between the two is greater than a threshold, the control device 130 adjusts the projected image of the projection device according to the comparison result. The color of the projected image, so that the projected image with the required color is formed on the dynamic projection target.

In the above embodiment, the control device 130 is used to compare the definition, brightness, and color of the collected projection image and the predetermined projection target image, respectively. It is understood that the control device 130 can also compare two or three of them at the same time. , and adjust two or three of them at the same time to improve the projection effect on the dynamic projection target.

For a dynamic projection target, the position of the dynamic projection target may change. For example, the position of clouds in the sky will change with the influence of wind, temperature and other weather conditions, so that the distance between the projection device 110 and the dynamic projection target changes. , thereby causing the projection image projected on the dynamic projection target to be deformed. To solve the above problem, the projection system 100 further includes a distance detection device, which can be a laser range finder, etc. The distance detection device is used to detect the difference between the projection device and the For the distance of the dynamic projection target, the control device 130 is further configured to control the projection device 110 to adjust the projected projection image according to the distance between the projection device and the dynamic projection target. It can be understood that when the projection system 100 is provided with a distance detection device, the projection image can be adjusted in combination with the control device 130 to compare the clarity, brightness or color of the captured projection image and the predetermined projection target image, thereby improving the dynamic performance of the projection image. The display effect of the projected image formed on the projection target.

The aforementioned projection system 100 provided with the distance detection device can solve the problem of deformation of the projected image caused by the change in the distance between the projection device 110 and the dynamic projection target, but when the dynamic projection target moves laterally relative to the projection device, part or all of the dynamic projection target The projection range of the shadow device 110 may be shifted, resulting in an incomplete projection image or an inability to form a projection image. In order to solve the above problem, in a specific embodiment, the projection system 100 further includes a detection device, which may be a radar or a camera device, the detection device is used to detect the spatial position information of the dynamic projection target, and the control device 130 is also used to detect the dynamic projection target according to the dynamic The spatial position information of the projection target controls the projection device 110 to adjust the direction and/or angle of the projected projection image, so that the projection image projected by the projection device 110 is completely formed on the dynamic projection target.

In one embodiment, the number of projection devices 110 is multiple, and each projection device 110 projects a sub-projection image, and the projection image formed on the dynamic projection target can be formed by splicing a plurality of sub-projection images, so the setting can be increased. The area of the projected image; or, the projected image formed on the dynamic projection target can be formed by superimposing a plurality of sub-projected images, and this setting can increase the brightness of the projected image.

In one embodiment, the control device 130 is configured to divide the collected projection image and the predetermined projection target image into a plurality of corresponding regions, and compare the sharpness of the collected projection image and the predetermined projection target image in each region respectively. , brightness or color, the control device 130 controls the projection device 110 to adjust the relative regions of the projected image according to the comparison results of the regions. In this embodiment, the collected projection image and the predetermined projection target image are divided into corresponding multiple regions, and the adjustment is performed in different regions, so that the projection image can be accurately adjusted, thereby further improving the projection formed on the dynamic projection target. Image display effect.

The projection system 100 provided by the embodiment of the present invention includes a projection device 110, an image acquisition device 120, and a control device 130. The projection device 110 is used to project a projection image on a dynamic projection target, and the image acquisition device 120 is used to capture the dynamic projection target. The control device 130 is configured to compare the collected projection image with the predetermined projection target image, and control the projection device to adjust the projected projection image according to the comparison result. The technical scheme collects the projection image formed on the dynamic projection target through the image acquisition device, and compares the collected projection image with the predetermined projection target image through the control device, so as to form feedback on the quality of the projection image, so as to realize the automatic function of the projection device. Adaptive adjustment ensures the effect of the projected image on the dynamic projection target.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should be included in the present invention. within the scope of protection.

Claims (10)

1. a projection system, is characterized in that, comprises: a projection device for projecting a projection image on a dynamic projection target; an image acquisition device for acquiring the projection image on the dynamic projection target; The control device is used for comparing the collected projection image with the predetermined projection target image, and controlling the projection device to adjust the projected projection image according to the comparison result. 2 . The projection system according to claim 1 , wherein the dynamic projection target comprises clouds, flying objects, smoke screens, water mist, water screens or waterfalls. 3 . 3 . The projection system according to claim 1 , wherein the control device is used to compare the definition of the collected projection image with the definition of the predetermined projection target image, and adjust the projection device according to the comparison result. 4 . focal length. 4 . The projection system according to claim 1 , wherein the control device is used to compare the brightness of the collected projection image with the brightness of a predetermined projection target image, and adjust the projection projected by the projection device according to the comparison result. 5 . Brightness of the image. 5 . The projection system according to claim 1 , wherein the control device is configured to compare the color of the collected projection image with the color of a predetermined projection target image, and adjust the projection projected by the projection device according to the comparison result. 6 . the color of the image. 6 . The projection system according to claim 1 , wherein the projection system further comprises a distance detection device, the distance detection device is used to detect the distance between the projection device and the dynamic projection target, and the control The device is further configured to control the projection device to adjust the projected projection image according to the distance between the projection device and the dynamic projection target. 7 . The projection system according to claim 1 , wherein the projection system further comprises a detection device, the detection device is used to detect the spatial position information of the dynamic projection target, and the control device is further configured to The spatial position information of the dynamic projection target controls the projection device to adjust the direction and/or angle of the projected projection image. 8 . The projection system according to claim 1 , wherein the projection device comprises a plurality of projection devices, and each projection device projects a sub-projection image, and the projection image is formed by splicing or superimposing a plurality of sub-projection images. 9 . 9 . The projection system according to claim 1 , wherein the control device is configured to generate the said projection device according to the distance between the projection device and the dynamic projection target, the type of the dynamic projection target and the to-be-projected image. 10 . A predetermined projection target image. 10. The projection system according to any one of claims 1 to 9, wherein the control device is configured to divide the collected projection image and the predetermined projection target image into a plurality of corresponding regions, and according to each The comparison result of the regions controls the projection device to adjust the relative regions of the projected image.

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