CN105430269B - A kind of photographic method and device applied to mobile terminal - Google Patents

Abstract

The invention discloses a photographing method and device applied to a mobile terminal. The photographing method includes: when using a front camera of a mobile terminal to photograph an object to be photographed, displaying a first image containing the object to be photographed in a first preview area. An image; a second preview area is formed on the first preview area according to the first image, wherein the second preview area is located below the front camera and close to the front camera; the second preview area containing the object to be photographed is displayed in the second preview area Image; the above-mentioned photographing method enables the user to not only adjust the photographing angle conveniently by watching the second preview area when taking a selfie, but also ensure that the line of sight of the photographed photograph is looking at the lens, effectively improving the selfportrait experience.

Description

A photographing method and device applied to a mobile terminal

technical field

The present invention relates to the field of mobile terminals, in particular to a photographing method and device applied to mobile terminals.

Background technique

With the rapid development of science and technology, smart terminals are becoming more and more popular, such as the number of smart PADs and smart phones is increasing day by day, almost reaching the state of having one in every hand.

At present, as the hardware performance of smart terminals is getting higher and higher, especially the camera specifications are getting better and better, the imaging quality is getting higher and higher, and because the camera functions of smart terminals are becoming more and more powerful, such as smart focus, scene Analysis, smile recognition, voice input, rapid continuous shooting, etc., more and more users like to take pictures with smartphones, especially selfies, which not only have good photo effects, but also are easy to use.

However, when the user is taking a selfie, there will be such a situation: when the user browses the photos completed by the selfie, he often finds that his eyes are not looking at the lens, but looking at other places. The reason is that the current mobile phone lens It is usually placed on the top of the mobile phone, so only when the user looks at the top lens area to take a selfie, the eyes are looking at the lens. However, if the user looks at the lens when taking a photo, it is difficult to see the preview on the screen. I don't know what the photo will look like.

Contents of the invention

The purpose of the present invention is to provide a method and device for taking pictures applied to mobile terminals, so as to solve the technical problem that the user's line of sight is easily misaligned with the lens when taking selfies with existing mobile phones.

In order to solve the above technical problems, embodiments of the present invention provide the following technical solutions:

A photographing method applied to a mobile terminal, comprising:

When using the front camera of the mobile terminal to take pictures of the subject to be photographed, displaying a first image containing the subject to be photographed in a first preview area;

forming a second preview area on the first preview area according to the first image, wherein the second preview area is located below the front camera and close to the front camera;

A second image containing the object to be photographed is displayed in the second preview area.

Further, the step of forming a second preview area on the first preview area according to the first image specifically includes:

detecting a facial image of the subject to be photographed in the first image;

A second preview area is formed on the first preview area based on the face image.

Further, the step of forming a second preview area on the first preview area according to the facial image specifically includes:

Acquiring position information of the center point of the facial image on the first preview area;

Acquiring position information of the front camera on a touch area, where the touch area includes the first preview area and the second preview area;

A second preview area is formed on the first preview area according to the position information of the central point of the facial image and the position information of the front camera.

Further, the camera, the central point of the facial image and the central point of the second preview area are located on the same straight line.

Further, the second image is reduced from the first image according to a preset ratio.

In order to solve the above technical problems, embodiments of the present invention also provide the following technical solutions:

A camera device applied to a mobile terminal, comprising:

A first display module, configured to display a first image containing the object to be photographed in a first preview area when the object to be photographed is photographed by the front camera of the mobile terminal;

A forming module, configured to form a second preview area on the first preview area according to the first image, wherein the second preview area is located below the front camera and close to the front camera;

A second display module, configured to display a second image containing the object to be photographed in the second preview area.

Further, the forming module specifically includes:

A detection submodule, configured to detect the facial image of the subject to be photographed in the first image;

A forming submodule is used for forming a second preview area on the first preview area according to the facial image.

Further, the forming submodule is specifically used for:

Acquiring position information of the center point of the facial image on the first preview area;

Acquiring position information of the front camera on a touch area, where the touch area includes the first preview area and the second preview area;

A second preview area is formed on the first preview area according to the position information of the central point of the facial image and the position information of the front camera.

Further, the camera, the central point of the facial image and the central point of the second preview area are located on the same straight line.

Further, the second image is reduced from the first image according to a preset ratio.

According to the photographing method and device applied to a mobile terminal according to the present invention, when the front camera of the mobile terminal is used to photograph an object to be photographed, the first image containing the object to be photographed is displayed in the first preview area, according to the first image An image forms a second preview area on the first preview area, and a second image containing the object to be photographed is displayed in the second preview area, so that when a user takes a selfie, it is not only convenient to look at the second preview area Adjusting the camera angle can also ensure that the line of sight of the photos taken is looking at the camera, effectively improving the selfie experience.

Description of drawings

The technical solutions and other beneficial effects of the present invention will be apparent through the detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

FIG. 1 is a schematic flowchart of a photographing method applied to a mobile terminal provided by a first embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a photographing device applied to a mobile terminal provided by a second embodiment of the present invention.

Detailed ways

Referring to the drawings, wherein like reference numerals represent like components, the principles of the present invention are exemplified when implemented in a suitable computing environment. The following description is based on illustrated specific embodiments of the invention, which should not be construed as limiting other specific embodiments of the invention not described in detail herein.

In the following description, specific embodiments of the present invention will be described with reference to steps and symbols executed by one or more computers, unless otherwise stated. Accordingly, these steps and operations will several times be referred to as being computer-implemented, which herein refers to operations by a computer processing unit of electronic signals representing data in a structured form. This operation transforms the data or maintains it at a location in the computer's memory system that can reconfigure or otherwise alter the operation of the computer in a manner well known to testers in the art. The data structures maintained by the data are physical locations in the memory that have certain characteristics defined by the data format. However, the principles of the present invention are described in the above words, which are not meant to be a limitation. Those skilled in the art will understand that the various steps and operations described below can also be implemented in hardware.

first embodiment

In this embodiment, description will be made from the perspective of a photographing device applied to a mobile terminal, and the photographing device can be integrated into a mobile terminal with a photographing function such as a mobile phone or a PAD.

Please refer to FIG. 1 . FIG. 1 is a schematic flowchart of a photographing method applied to a mobile terminal according to a first embodiment of the present invention. The method can include:

S101. When a front camera of a mobile terminal is used to take pictures of a subject to be photographed, display a first image including the subject to be photographed in a first preview area.

In this embodiment, the first preview area may be a display area of the touch screen of the mobile terminal. The object to be photographed may be a person or an animal. The first preview area not only displays the first image containing the object to be photographed, but also displays the photographing background. For example, when the user takes a selfie with the front camera, the first preview area will display the user's avatar and the background objects around the avatar.

S102. Form a second preview area on the first preview area according to the first image, wherein the second preview area is located below the front camera and close to the front camera.

Preferably, the above step S102 may specifically include:

a. Detecting the face image of the subject to be photographed in the first image.

In this embodiment, the face image of the object to be photographed in the first image can be detected by a face recognition module, which mainly uses face rule method and skin color model method to realize face recognition.

Specifically, since the face has certain structural distribution features, such as the distribution positions of eyes, nose, and mouth, these features can be extracted to generate corresponding rules (i.e. the face rule method) to determine whether the first image contains a facial image, If there is, then the face can be tracked and positioned by using the feature that the facial skin color is relatively concentrated in the color space (that is, the skin color model method).

b. Forming a second preview area on the first preview area according to the facial image.

Preferably, the above step b may specifically include:

Obtain the position information of the center point of the facial image on the first preview area;

Obtain the position information of the front camera on the touch area, the touch area includes the first preview area and the second preview area;

A second preview area is formed on the first preview area according to the position information of the central point of the facial image and the position information of the front camera.

Preferably, the camera, the central point of the facial image and the central point of the second preview area are located on the same straight line.

Specifically, the second preview area may be embodied in the form of a preview frame. The location information can be expressed as abscissa and ordinate information, and the center point of the facial image is obtained through a relevant analysis algorithm, and the abscissa and ordinate of the center point of the facial image on the first preview area are obtained, and at the same time, the The abscissa and ordinate of the front camera of the mobile terminal on the touch area, determine the coordinate position of the center point of the second preview area according to the coordinate position of the center point of the face image and the coordinate position of the front camera, ensure that the center point of the camera and face image point and the center point of the second preview area are located on the same straight line.

In this embodiment, the size of the second preview area can be set by the user or defaulted by the system. Since the second preview area is located below the front camera and close to the front camera, the ordinate position of the center point of the second preview area is fixed on the first preview area. The straight line determined between can further determine the abscissa position of the center point of the second preview area, and then determine the position of the center point of the second preview area.

It can be understood that when the position of the subject to be photographed changes relative to the display screen of the mobile phone (that is, the position of the central point of the facial image changes), the abscissa position of the central point of the second preview area also changes, and it will change with the Move according to the movement of the center point of the facial image, so that even when the angle between the user's face and the display screen of the mobile phone is not perpendicular, there is a relatively good preview angle, allowing the user to see clearly the content of the second preview frame, which is convenient The user adjusts the camera angle.

S103. Display a second image including the object to be photographed in the second preview area.

Preferably, the second image is reduced from the first image according to a preset ratio. The preset ratio can be determined by the user according to his/her preference, and it is only necessary to ensure that the user can clearly see the content in the second preview area.

As can be seen from the above, in the photographing method applied to a mobile terminal provided in this embodiment, when the front camera of the mobile terminal is used to photograph the object to be photographed, the first image containing the object to be photographed is displayed in the first preview area, according to The first image forms a second preview area on the first preview area, and a second image containing the object to be photographed is displayed in the second preview area, enabling the user to take a selfie by looking at the second preview area Not only is it convenient to adjust the camera angle, but it can also ensure that the line of sight of the photos taken is looking at the camera, effectively improving the selfie experience.

second embodiment

In order to better implement the photographing method applied to the mobile terminal provided by the embodiment of the present invention, the embodiment of the present invention also provides a photographing device applied to the mobile terminal. The photographing device can be integrated into a mobile phone, a PAD, etc. functions in mobile terminals. The meanings of the nouns are the same as those in the above-mentioned photographing method applied to the mobile terminal, and for specific implementation details, please refer to the description in the method embodiments.

Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of a photographing device applied to a mobile terminal provided by a second embodiment of the present invention. The photographing device applied to the mobile terminal may include:

The first display module 10 is configured to display a first image containing the subject to be photographed in a first preview area when the mobile terminal's front camera is used to photograph the subject to be photographed.

In this embodiment, the first preview area may be a display area of the touch screen of the mobile terminal. The object to be photographed may be a person or an animal. The first preview area not only displays the first image containing the object to be photographed, but also displays the photographing background. For example, when the user takes a selfie with the front camera, the first preview area will display the user's avatar and the background objects around the avatar.

The forming module 20 is configured to form a second preview area on the first preview area according to the first image, wherein the second preview area is located below the front camera and close to the front camera.

Preferably, the above-mentioned forming module 20 may specifically include:

The detection sub-module 21 is configured to detect the facial image of the subject to be photographed in the first image.

In this embodiment, the second preview area may be represented in the form of a preview frame. The detection sub-module 21 can be realized by hardware or by software. When implemented in software, the detection sub-module 21 can be a face recognition module, and the face recognition module mainly uses face rule method and skin color model method to realize face recognition.

Specifically, since the face has certain structural distribution features, such as the distribution positions of eyes, nose, and mouth, these features can be extracted to generate corresponding rules (i.e. the face rule method) to determine whether the first image contains a facial image, If there is, then the face can be tracked and positioned by using the feature that the facial skin color is relatively concentrated in the color space (that is, the skin color model method).

A forming sub-module 22 is used for forming a second preview area on the first preview area according to the face image.

Preferably, the forming submodule 22 can specifically be used for:

Obtain the position information of the center point of the facial image on the first preview area;

Obtain the position information of the front camera on the touch area, the touch area includes the first preview area and the second preview area;

A second preview area is formed on the first preview area according to the position information of the central point of the facial image and the position information of the front camera.

Preferably, the camera, the central point of the facial image and the central point of the second preview area are located on the same straight line.

Specifically, the position information can be expressed as abscissa and ordinate information, and the forming submodule 32 obtains the center point of the facial image through a related analysis algorithm, and obtains the abscissa and ordinate of the facial image center point on the first preview area. Ordinate, at the same time, obtain the abscissa and ordinate of the mobile terminal front camera on the touch area, determine the coordinate position of the center point of the second preview area according to the coordinate position of the center point of the face image and the coordinate position of the front camera, Make sure that the camera, the center point of the facial image and the center point of the second preview area are on the same straight line.

In this embodiment, the size of the second preview area can be set by the user or defaulted by the system. Since the second preview area is located below the front camera and close to the front camera, the ordinate position of the center point of the second preview area is fixed on the first preview area. The straight line determined between can further determine the abscissa position of the center point of the second preview area, and then determine the position of the center point of the second preview area.

It can be understood that when the position of the subject to be photographed changes relative to the display screen of the mobile phone (that is, the position of the central point of the facial image changes), the abscissa position of the central point of the second preview area also changes, and it will change with the Move according to the movement of the center point of the facial image, so that even when the angle between the user's face and the display screen of the mobile phone is not perpendicular, there is a relatively good preview angle, allowing the user to see clearly the content of the second preview frame, which is convenient The user adjusts the camera angle.

The second display module 30 is configured to display a second image containing the object to be photographed in the second preview area.

Preferably, the second image can be reduced from the first image according to a preset ratio. The preset ratio can be determined by the user according to his/her preference, and it is only necessary to ensure that the user can clearly see the content in the second preview area.

During specific implementation, each of the above units may be implemented as an independent entity, or may be combined arbitrarily as the same or several entities. The specific implementation of each of the above units may refer to the previous method embodiments, and will not be repeated here.

As can be seen from the above, the photographing device applied to a mobile terminal provided in this embodiment, when using the front camera of the mobile terminal to photograph the object to be photographed, displays the first image containing the object to be photographed in the first preview area, according to The first image forms a second preview area on the first preview area, and a second image containing the object to be photographed is displayed in the second preview area, enabling the user to take a selfie by looking at the second preview area Not only is it convenient to adjust the camera angle, but it can also ensure that the line of sight of the photos taken is looking at the camera, effectively improving the selfie experience.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium can include: Read Only Memory (ROM, Read Only Memory), Random Access Memory (RAM, Random Access Memory), disk or CD, etc.

The method and device for photographing a mobile terminal provided by the embodiments of the present invention have been described in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for To help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application range. In summary, the content of this specification is not It should be understood as a limitation of the present invention.

Claims (9)

1. A photographing method applied to a mobile terminal, characterized in that, comprising: When using the front camera of the mobile terminal to take pictures of the subject to be photographed, displaying a first image containing the subject to be photographed in a first preview area; Detecting the facial image of the subject to be photographed in the first image, and acquiring position information of a central point of the facial image on the first preview area; Determine the abscissa position of the center point of the second preview area according to the position information of the center point of the facial image and the position information of the front camera, wherein the second preview area is located below the front camera And close to the front camera, the ordinate position of the center point of the second preview area is fixed on the first preview area; forming a second preview area on the first preview area according to the abscissa position and the ordinate position of the center point of the second preview area; A second image containing the object to be photographed is displayed in the second preview area. 2. The photographing method applied to a mobile terminal as claimed in claim 1, wherein the center point of the second preview area is determined according to the position information of the center point of the facial image and the position information of the front camera The steps of the abscissa position specifically include: Acquiring position information of the front camera on a touch area, where the touch area includes the first preview area and the second preview area; The abscissa position of the center point of the second preview area is determined according to the position information of the center point of the facial image and the position information of the front camera. 3. The photographing method applied to a mobile terminal according to claim 2, wherein the camera, the central point of the facial image and the central point of the second preview area are located on the same straight line. 4. The photographing method applied to a mobile terminal according to claim 1, wherein the second image is formed by reducing the first image according to a preset ratio. 5. A photographing device applied to a mobile terminal, characterized in that it comprises: A first display module, configured to display a first image containing the object to be photographed in a first preview area when the object to be photographed is photographed by the front camera of the mobile terminal; A forming module, including a detection sub-module, configured to detect the facial image of the object to be photographed in the first image; a forming sub-module, configured to detect the facial image according to the position information of the center point of the facial image and the front camera The location information determines the abscissa position of the center point of the second preview area, wherein the second preview area is located below the front camera and close to the front camera, and the ordinate of the center point of the second preview area The position is fixed on the first preview area; a second preview area is formed on the first preview area according to the abscissa position and the ordinate position of the center point of the second preview area; A second display module, configured to display a second image containing the object to be photographed in the second preview area. 6. The photographing device applied to a mobile terminal as claimed in claim 5, wherein the forming submodule is specifically used for: Acquiring position information of the front camera on a touch area, where the touch area includes the first preview area and the second preview area; The abscissa position of the center point of the second preview area is determined according to the position information of the center point of the facial image and the position information of the front camera. 7 . The photographing device applied to a mobile terminal according to claim 6 , wherein the camera, the center point of the facial image, and the center point of the second preview area are located on the same straight line. 8 . 8. The photographing device applied to a mobile terminal according to claim 5, wherein the second image is obtained by reducing the first image according to a preset ratio. 9. A computer-readable storage medium, which stores a computer program, characterized in that, when the computer program is run on a computer, the computer is made to perform the photographing method applied to a mobile terminal as claimed in claim 1 .