CN108270978A - A kind of image processing method and device - Google Patents

Abstract

An embodiment of the present invention provides an image processing method, which relates to the field of digital imaging technology. First, a first image at a first distance is obtained through the depth sensor, and then a first foreground image and a first background image of the first image are obtained. , and then obtain a second background image, the second background image is different from the first background image, and finally combine the first foreground image and the second background image to form a second image. It solves the need to divide the shooting and image processing into two steps in the prior art, and the later image processing needs to synthesize the foreground and background frame by frame, so there is a technology with low degree of automation, excessive professionalism and low work efficiency question.

Description

An image processing method and device

technical field

The invention relates to the technical field of digital images, in particular to an image processing method and device.

Background technique

The "diversification" of today's digital images lies in its unique multimedia and cross-media forms of expression and the diversity and individuality of artistic styles shown by digital image artists. Today's three-dimensional computer graphics and animation technology provides a large number of wonderful skills that were unimaginable ten years ago or even a few years ago, and it also opens up a wider space for digital imaging artists today.

In the prior art, the means of image processing are basically completed by post-editing by professionals. Video post-editing and splicing technology can realize the covering and splicing effect of two or more videos on the same screen in blocks or sub-regions.

However, in the process of realizing the technical solution of the invention in the embodiment of the present application, the inventor of the present application found that the above-mentioned prior art has at least the following technical problems:

Due to the need to divide the shooting and image processing into two steps in the prior art, and at the same time, post-image processing requires post-image processing workers to synthesize the foreground and background frame by frame, so the degree of automation is low, the professionalism is too strong, and the work Inefficient technical problems.

Contents of the invention

Embodiments of the present invention provide an image processing method and device, which are used to solve the technical problem in the prior art that image processing cannot be efficiently and conveniently completed in the later image processing process.

In a first aspect, the present invention provides an image processing method applied to a first electronic device, the first electronic device is configured with a depth sensor, and the method includes: obtaining a first image at a first distance by the depth sensor image; obtaining a first foreground image and a first background image of the first image; obtaining a second background image, the second background image being different from the first background image; combining the first foreground image and the The second background image is synthesized to form a second image.

Preferably, the obtaining the second background image further includes: obtaining a second image at a second distance according to the depth sensor, wherein the second distance is greater than the first distance; obtaining the second image a third background image; determining the third background image as the second background image.

Preferably, the obtaining the second background image further includes: obtaining a fourth background image, wherein the fourth background image is a preset background image; determining the fourth background image as the second background image.

Preferably, the obtaining the second background image further includes: obtaining a fifth background image, the fifth background image is a background image obtained for the second electronic device connected to the first electronic device; the fifth background image An image is determined as the second background image.

Preferably, before the first image at the first distance is obtained by the depth sensor, the method further includes: obtaining a third image; obtaining a face image in the third image; A third distance between the image and the first electronic device, determining the third distance as the first distance.

Preferably, the synthesizing the first foreground image and the second background image further includes: scaling the second background image to obtain a sixth background image; combining the first foreground image and the A sixth background image is synthesized.

Preferably, after the second background image is scaled to obtain the sixth background image, the method further includes: setting the first foreground image at a non-center position of the sixth background image.

On the other hand, the present invention also provides an image processing device, which is applied to a first electronic device, and the first electronic device is configured with a depth sensor, wherein the device includes: a first obtaining unit, the first obtaining The unit is used to obtain the first image at the first distance through the depth sensor; the second obtaining unit is used to obtain the first foreground image and the first background image of the first image; the third an obtaining unit, the third obtaining unit is used to obtain a second background image, the second background image is different from the first background image; a first combining unit, the first combining unit is used to combine the first The foreground image and the second background image are combined to form a second image.

Preferably, the obtaining the second background image further includes: a fourth obtaining unit, the fourth obtaining unit is configured to obtain a second image at a second distance according to the depth sensor, wherein the second distance is greater than The first distance; the fifth obtaining unit, the fifth obtaining unit is used to obtain the third background image of the second image; the first determining unit, the first determining unit is used to obtain the third background image An image is determined as the second background image.

Preferably, the obtaining of the second background image further includes: a sixth obtaining unit configured to obtain a fourth background image, wherein the fourth background image is a preset background image; the second determining unit , the second determining unit is configured to determine the fourth background image as the second background image.

Preferably, the obtaining of the second background image further includes: a seventh obtaining unit, the seventh obtaining unit is used to obtain a fifth background image, and the fifth background image is the first electronic device connected to the first electronic device. The second electronic device obtains a background image; a third determining unit, configured to determine the fifth background image as the second background image.

Preferably, before the first image at the first distance is obtained by the depth sensor, the device further includes: an eighth obtaining unit, the eighth obtaining unit is used to obtain the third image, and the ninth obtaining unit , the ninth obtaining unit is used to obtain the face image in the third image; the fourth determining unit is used to obtain the face image according to the relationship between the face image and the first electronic device A third distance, determining the third distance as the first distance.

Preferably, the synthesizing the first foreground image and the second background image further includes: a tenth obtaining unit, the tenth obtaining unit is configured to scale the second background image to obtain a sixth A background image; a second combining unit, the second combining unit is configured to combine the first foreground image and the sixth background image.

Preferably, after the second background image is scaled to obtain the sixth background image, it further includes: a first setting unit configured to set the first foreground image on the sixth background The non-center position of the image.

The above one or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:

1. In the embodiment of the present invention, first obtain the first image at the first distance by the depth sensor, then obtain the first foreground image and the first background image of the first image, and then obtain the second background image, The second background image is different from the first background image, and finally the first foreground image and the second background image are synthesized to form a second image. According to the above technical solution, the technical problems of low degree of automation, excessive professionalism and low work efficiency in the prior art are solved, and the technical effect of real-time image synthesis of foreground and background is achieved, which greatly improves the work efficiency and automation of image processing degree.

2. In the embodiment of the present application, the second image at the second distance is obtained according to the depth sensor, and then the third background image of the second image is obtained, and finally the third background image is determined as the second background image technology. It solves the technical problem that the ideal shooting effect cannot be obtained in real time in the prior art, and achieves the technical effect that the shooting background can be freely selected according to individual needs.

3. The embodiment of the present application solves the problems in the prior art by obtaining the fourth background image, wherein the fourth background image is a preset background image, and determining the fourth background image as the second background image. In the process of collecting specific background images, post-production is required, which takes a long time and wastes manpower, and achieves the technical effect of being able to shoot images with specific backgrounds in non-specific scenes.

4. In this embodiment of the present application, the fifth background image is obtained by obtaining the background image of the second electronic device connected to the first electronic device, and then the fifth background image is determined as the first electronic device. The technical means of the two background images solves the technical problem that the two playback screens cannot be synthesized into one screen in real time in the prior art, and enables the viewer to see the two playback screens in one screen in real time The technical effect of synchronous playback.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a flowchart of an image processing method in an embodiment of the present invention;

FIG. 2 is a schematic diagram of an image processing device in an embodiment of the present invention.

Detailed ways

Embodiments of the present invention provide an image processing method and device, which are used to solve the technical problem in the prior art that image processing cannot be efficiently and conveniently completed in the later image processing process. In order to solve the above technical problems, the thinking provided by the present invention is as follows:

In the embodiment of the present invention, the first image at the first distance is first obtained by the depth sensor, then the first foreground image and the first background image of the first image are obtained, and the second background image is obtained, the The second background image is different from the first background image, and finally the first foreground image and the second background image are synthesized to form a second image. The technical effect of real-time image synthesis of foreground and background is achieved, and the work efficiency and automation degree of image processing are greatly improved.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described in detail below through the accompanying drawings and specific embodiments. The detailed description of the solution is not a limitation to the technical solution of the present application. In the case of no conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Embodiment one

The first aspect of the present invention provides an image processing method, which is applied to a first electronic device, and the first electronic device is configured with a depth sensor. Please refer to FIG. 1, and the method includes:

The first electronic device may be a 3D imaging system. Wherein, the first electronic device includes a depth sensor, through which video information with distance information can be collected, and 3D modeling can be performed on the shooting scene, such as an Intel RealSense3D camera, etc. At the same time, the first electronic device is used in A robot having a mobility system. This application uses the Intel RealSense 3D camera as an example for illustration, and does not specifically limit the first electronic device.

Step S110, obtaining a first image at a first distance through the depth sensor;

Specifically, the depth sensor can collect image information within a predetermined distance, and not collect image information outside the predetermined distance. The first distance is the distance between the camera and the subject, and the first image is the image of the subject captured by the camera.

Step S120, obtaining a first foreground image and a first background image of the first image;

Specifically, the foreground image refers to the scene or person in front of the subject and close to the camera in the picture, showing a certain spatial relationship or relationship between characters. The background image refers to the scene behind the subject and away from the camera, which is an important part of the environment. For example, when traveling, if a person stands in front of a building and takes a picture, the person is the foreground image, and the building behind the person is the background image.

Step S130, obtaining a second background image, the second background image being different from the first background image;

Specifically, when the camera shoots a person or a scene, the background image in the directly captured picture is the first background image, and the second background is different from the first background image and may be other background images, For example, for example, a preset background image in the system, images from other electronic devices, or background images of different distances in the camera lens, etc.

Step S140, combining the first foreground image and the second background image to form a second image.

Specifically, the second image is a new image formed after image synthesis, and the background of the second image is different from that of the first image. This step in this application is equivalent to the post-image processing stage after the shooting is completed in the prior art, such as image clipping, using photoshop software to process the image to form a new image, while the synthesis process of the application is automatic and real-time , which saves working time and improves the degree of automation.

Further, before the first image at the first distance is obtained by the depth sensor, the method further includes: obtaining a third image, obtaining a face image in the third image, and according to the face A third distance between the image and the first electronic device, determining the third distance as the first distance.

Specifically, the third image is an image with a person. When a robot with an Intel RealSense3D camera is detected by an infrared sensor, when a person is detected in the lens, the image is collected, and the collected image is the The third image, and then identify the face image in the third image, the third distance is the distance between the face image and the first electronic device, so as to determine the third distance as the first distance. That is to say, in the embodiment of the present application, the distance between the robot and the human can be obtained in real time through the infrared sensor, and different first images can be obtained according to the distance, so that the first foreground image and the first background image at different distances can be obtained , realizing the working mode that can dynamically adjust the foreground and background. Specifically, in the process of changing the relative distance between the robot or the human, different distances between the robot and the human are obtained through the infrared sensor, and then different first foreground images and first background images are obtained, and then combined into different images .

Embodiment two

An image processing method described in this application can be applied to a photographing scene, using a real scene as the second background image, and synthesizing the real scene with the first foreground image. The method also includes:

Obtaining a second image at a second distance according to the depth sensor, wherein the second distance is greater than the first distance, obtaining a third background image of the second image, and determining the third background image as The second background image.

For example, when people go out to play, tourists want to take pictures in front of a certain building, but because the building is far away from the tourist, and there is an obstacle between the building and the tourist. In this case, the distance between the camera and the tourist is the first distance, the image of the tourist is the first foreground image, the distance between the camera and the obstacle is the second distance, the The image of the obstacle is the second image, and the image of the building is the third background image of the second image. According to the depth sensor of the first electronic device, the second image can be obtained, and then a third background image of the second image can be obtained, and finally the third background image can be determined to be synthesized with the first foreground image The second background image, that is, combining the building as the second background image with the tourists as the first foreground image, and the resulting photo is the second image. In this way, real-time synthesis is achieved, and the photos taken on the spot can achieve the ideal effect, eliminating the cumbersome post-production.

Embodiment Three

An image processing method described in the present application can also be applied to a scene where a preset background is shot, and the first foreground image is synthesized with a preset background image, and the method further includes: obtaining a fourth background image, wherein The fourth background image is a preset background image, and the fourth background image is determined as the second background image.

For example, when people need to take ID photos, the face can be taken in front of any background. When taking a photo, it is only necessary to obtain the first foreground image of the face, and then match it with the preset background image as needed. The fourth background image is synthesized, for example, a blue background, a white background, and a red background ID photo are required, and only the first foreground image needs to be synthesized with preset background images of different colors, thereby greatly saving Time, to achieve the effect of instant shooting. The preset background image is not limited to taking ID photos, but can also be various scenes, such as landscapes, buildings, etc., which are not specifically limited in this embodiment of the present application.

Embodiment Four

An image processing method described in the present application can also be applied to scenes such as live game broadcasting and video lectures, for real-time synthesis of game interface and characters, or real-time synthesis of courseware and lecturers.

The method further includes: obtaining a fifth background image, the fifth background image is a background image obtained for a second electronic device connected to the first electronic device, and determining the fifth background image as the second background image image.

Specifically, in the scene of game live broadcast or video teaching, the game interface or courseware interface is displayed on the second electronic device, and the second electronic device may be displayed on a computer screen, a mobile phone screen, or a tablet computer. On the screen, before the live broadcast or recording of the game or lecture, the first electronic device is connected to the second electronic device, so that the first electronic device can obtain the image displayed by the second electronic device, so The image displayed by the second electronic device is the fifth background image, and the fifth background image is determined as the second background image.

Further, the synthesizing the first foreground image and the second background image further includes: scaling the second background image to obtain a sixth background image, combining the first foreground image and the A sixth background image is synthesized.

Specifically, the obtained first foreground image and the second background image are of standard size, and based on considerations of composition and ease of viewing, the second background image is scaled to obtain a sixth background image, the The size of the sixth background image is a size suitable for being combined with the first foreground image, and the specific size is determined according to the needs of the situation. The embodiment of the present application does not make specific limitations, and then the sixth background image is combined with the first foreground image Compositing is performed to form the second image.

Further, after the second background image is scaled to obtain the sixth background image, the method further includes: setting the first foreground image at a non-center position of the sixth background image.

Specifically, when synthesizing the sixth background image and the first foreground image, in order to facilitate watching the game operation process or the completeness of the courseware, according to the actual situation, the human face image, that is, the The first foreground image is the lower left corner, the lower right corner, the upper left corner, the upper right corner of the sixth background image, or a certain side of the sixth background image, the embodiment of the present application does not limit the specific position. Finally, the effect that the viewer can see the live broadcaster and the game operation interface at the same time is achieved.

Embodiment five

The image processing method provided by the embodiment of the present application is also applicable to a scene where multiple electronic devices are used together. Specifically, the multiple electronic devices include at least two electronic devices for shooting the foreground and one electronic device for shooting the background, wherein information transmission can be performed between the above multiple electronic devices. Based on the image processing method provided by the present application, the first foreground image A and the second foreground image B are respectively obtained through the above-mentioned at least two electronic devices that shoot the foreground, and the background image C is obtained through the electronic device that shoots the background, so , an image with the first foreground image A and the second foreground image B as the foreground image and the background image C as the background image can be obtained through the above three electronic devices. Further, in the above-mentioned embodiment, the above-mentioned three electronic devices can be aimed at the same target scene, but the three electronic devices can be located at different positions and angles, so that the target can be achieved through the cooperation between the three devices. Different image or video combination methods of scenes can realize diversified image display or video playback methods that meet multiple needs.

Embodiment six

This embodiment also provides an image processing device, please refer to FIG. 2, the device includes:

A first obtaining unit 11, the first obtaining unit 11 is configured to obtain a first image at a first distance through the depth sensor;

A second obtaining unit 12, the second obtaining unit 12 is configured to obtain a first foreground image and a first background image of the first image;

A third obtaining unit 13, the third obtaining unit 13 is configured to obtain a second background image, the second background image is different from the first background image;

A first combining unit 14, configured to combine the first foreground image and the second background image to form a second image.

Further, the device also includes:

A fourth obtaining unit, configured to obtain a second image at a second distance according to the depth sensor, wherein the second distance is greater than the first distance;

a fifth obtaining unit, configured to obtain a third background image of the second image;

A first determining unit, configured to determine the third background image as the second background image.

Further, the device also includes:

A sixth obtaining unit, the sixth obtaining unit is used to obtain a fourth background image, wherein the fourth background image is a preset background image;

A second determining unit, configured to determine the fourth background image as the second background image.

Further, the device also includes:

A seventh obtaining unit, the seventh obtaining unit is configured to obtain a fifth background image, and the fifth background image is a background image obtained by a second electronic device connected to the first electronic device;

A third determining unit, configured to determine the fifth background image as the second background image.

Further, the device also includes:

an eighth obtaining unit, the eighth obtaining unit is used to obtain a third image;

A ninth obtaining unit, the ninth obtaining unit is used to obtain the face image in the third image;

A fourth determining unit, configured to determine the third distance as the first distance according to a third distance between the face image and the first electronic device.

Further, the device also includes:

A tenth obtaining unit, the tenth obtaining unit is configured to scale the second background image to obtain a sixth background image;

A second combining unit, configured to combine the first foreground image and the sixth background image.

Further, the device also includes:

A first setting unit, configured to set the first foreground image at a non-center position of the sixth background image.

The above one or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:

1. In the embodiment of the present invention, first obtain the first image at the first distance by the depth sensor, then obtain the first foreground image and the first background image of the first image, and then obtain the second background image, The second background image is different from the first background image, and finally the first foreground image and the second background image are synthesized to form a second image. According to the above technical solution, the technical problems of low degree of automation, excessive professionalism and low work efficiency in the prior art are solved, and the technical effect of real-time image synthesis of foreground and background is achieved, which greatly improves the work efficiency and automation of image processing degree.

2. In the embodiment of the present application, the second image at the second distance is obtained according to the depth sensor, and then the third background image of the second image is obtained, and finally the third background image is determined as the second background image technology. It solves the technical problem that the ideal shooting effect cannot be obtained in real time in the prior art, and achieves the technical effect that the shooting background can be freely selected according to individual needs.

3. The embodiment of the present application solves the problems in the prior art by obtaining the fourth background image, wherein the fourth background image is a preset background image, and determining the fourth background image as the second background image. In the process of collecting specific background images, post-production is required, which takes a long time and wastes manpower, and achieves the technical effect of being able to shoot images with specific backgrounds in non-specific scenes.

4. In this embodiment of the present application, the fifth background image is obtained by obtaining the background image of the second electronic device connected to the first electronic device, and then the fifth background image is determined as the first electronic device. The technical means of the two background images solves the technical problem that the two playback screens cannot be synthesized into one screen in real time in the prior art, and enables the viewer to see the two playback screens in one screen in real time The technical effect of synchronous playback.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (14)

1. a kind of image processing method, applied to the first electronic equipment, first electronic equipment is configured with depth transducer, In, the method includes：

The first image at first distance is obtained by the depth transducer；

Obtain the first foreground image and the first background image of described first image；

The second background image is obtained, second background image is different from first background image；

First foreground image and second background image are synthesized, form the second image.

2. the method as described in claim 1, which is characterized in that the second background image of the acquisition further includes：

The second image at second distance is obtained according to the depth transducer, wherein, the second distance is more than described first Distance；

Obtain the third background image of second image；

The third background image is determined as second background image.

3. the method as described in claim 1, which is characterized in that the second background image of the acquisition further includes：

The 4th background image is obtained, wherein the 4th background image is default background image；

4th background image is determined as second background image.

4. the method as described in claim 1, which is characterized in that the second background image of the acquisition further includes：

The 5th background image is obtained, the 5th background image is that the second electronic equipment being connected with first electronic equipment obtains Obtain background image；

5th background image is determined as second background image.

5. the method as described in claim 1, which is characterized in that obtained at the first distance by the depth transducer described The first image before, the method further includes：

Obtain third image；

Obtain the facial image in the third image；

According to the third distance between the facial image and first electronic equipment, determine the third distance for described the One distance.

6. method as claimed in claim 4, which is characterized in that described by first foreground image and second Background As being synthesized, further include：

Second background image is zoomed in and out and obtains the 6th background image；

First foreground image and the 6th background image are synthesized.

7. method as claimed in claim 6, which is characterized in that second background image is being zoomed in and out into the 6th back of the body of acquisition After scape image, further include：

First foreground image is set to the non-central location of the 6th background image.

8. a kind of image processing apparatus, applied to the first electronic equipment, first electronic equipment is configured with depth transducer, In, described device includes：

First obtains unit, the first obtains unit are used to obtain the first figure at the first distance by the depth transducer Picture；

Second obtaining unit, second obtaining unit are used to obtain the first foreground image and the first background of described first image Image；

Third obtaining unit, for obtaining the second background image, second background image is different from the third obtaining unit First background image；

First synthesis unit, first synthesis unit are used to carry out first foreground image and second background image Synthesis forms the second image.

9. device as claimed in claim 8, which is characterized in that the second background image of the acquisition further includes：

4th obtaining unit, the 4th obtaining unit are used to obtain the second figure at second distance according to the depth transducer Picture, wherein, the second distance is more than first distance；

5th obtaining unit, the 5th obtaining unit are used to obtain the third background image of second image；

First determination unit, first determination unit are used to the third background image being determined as second Background Picture.

10. device as claimed in claim 8, which is characterized in that the second background image of the acquisition further includes：

6th obtaining unit, the 6th obtaining unit is for obtaining the 4th background image, wherein the 4th background image is Default background image；

Second determination unit, second determination unit are used to the 4th background image being determined as second Background Picture.

11. device as claimed in claim 8, which is characterized in that the second background image of the acquisition further includes：

7th obtaining unit, the 7th obtaining unit for obtain the 5th background image, the 5th background image for institute It states the second electronic equipment that the first electronic equipment is connected and obtains background image；

Third determination unit, the third determination unit are used to the 5th background image being determined as second Background Picture.

12. device as claimed in claim 8, which is characterized in that first distance is obtained by the depth transducer described Before first image at place, described device further includes：

8th obtaining unit, the 8th obtaining unit are used to obtain third image；

9th obtaining unit, the 9th obtaining unit are used to obtain the facial image in the third image；

4th determination unit, the 4th determination unit are used for according between the facial image and first electronic equipment Third distance determines that the third distance is first distance.

13. device as claimed in claim 11, which is characterized in that described by first foreground image and second background Image is synthesized, and is further included：

Tenth obtaining unit, the tenth obtaining unit, which is used to zoom in and out second background image, obtains the 6th Background Picture；

Second synthesis unit, second synthesis unit are used to carry out first foreground image and the 6th background image Synthesis.

14. device as claimed in claim 13, which is characterized in that second background image is being zoomed in and out into acquisition the 6th After background image, further include：

First setting unit, first setting unit are used to first foreground image being set to the 6th background image Non-central location.