CN108989673A

CN108989673A - A kind of image synthesis processing method and mobile terminal

Info

Publication number: CN108989673A
Application number: CN201810832578.1A
Authority: CN
Inventors: 王乔明
Original assignee: Nubia Technology Co Ltd
Current assignee: Jiangsu Baigong Creation Culture Technology Co ltd
Priority date: 2018-07-26
Filing date: 2018-07-26
Publication date: 2018-12-11
Anticipated expiration: 2038-07-26
Also published as: CN108989673B

Abstract

The invention discloses a kind of images to synthesize processing method, comprising: determines the heterochromia value of the first image and the second image；Target subject is determined according to the heterochromia value of the first image and second image；The first image and second image are synthesized according to determining target subject.The invention also discloses a kind of mobile terminal and computer readable storage mediums, solving the problems, such as that the main body personage of multiple images is synthesized in same image in the related technology needs independent shooting background image to lead to poor user experience, shooting step has been simplified, user experience is improved.

Description

Image synthesis processing method and mobile terminal

Technical Field

The present invention relates to the field of mobile communication technologies, and in particular, to an image synthesis processing method and a mobile terminal.

Background

In the process of photo shooting, the requirement often exists that the same person changes a plurality of different positions and postures in the same background to shoot for a plurality of times, and finally the same main portrait in the plurality of photos is extracted and synthesized into one picture, so that a magical effect is achieved. The current common practice is as follows: firstly, a pure background image A0 without a target subject (such as a portrait) is shot, then AN image A1 containing the target subject and AN image A2 … … AN are shot in sequence, then differences are respectively made between the image A1 and the image A2 … … AN and the image A0 to obtain difference images, and finally all the difference images are synthesized on AN image A0 to obtain a final target image. The method has to shoot the background picture first, and the user experience is poor.

In the related art, a solution is not provided at present for the problem that user experience is poor due to the fact that a background image needs to be shot separately when a main person of a plurality of images is combined into the same image.

Disclosure of Invention

The invention mainly aims to provide an image synthesis processing method and a mobile terminal, and aims to solve the problem that user experience is poor due to the fact that a background image needs to be shot independently when a main person of multiple images is synthesized into the same image in the related art.

In order to achieve the above object, an embodiment of the present invention provides an image synthesis processing method, including:

determining color difference values of the first image and the second image;

determining a target subject according to the color difference value of the first image and the second image;

and synthesizing the first image and the second image according to the determined target subject.

Optionally, determining the color difference value of the first image and the second image includes:

performing difference processing on the first image and the second image to obtain a first difference area and a second difference area of the first image and a first difference area and a second difference area of the second image;

amplifying the first difference area to obtain a third difference area, and amplifying the second difference area to obtain a fourth difference area;

calculating color average values of the first image in the first difference region and the third difference region, and calculating color average values of the second image in the first difference region and the third difference region; determining a first color difference value of the first image and the second image according to the color average value of the first image in the first difference area and the third difference area and the color average value of the second image in the first difference area and the third difference area; or,

calculating color average values of the first image in the second difference region and the fourth difference region, and calculating color average values of the second image in the second difference region and the fourth difference region; and determining a second color difference value of the first image and the second image according to the color average value of the first image in the second difference area and the fourth difference area and the color average value of the second image in the second difference area and the fourth difference area.

Optionally, determining the target subject according to the color difference value between the first image and the second image includes:

and under the condition that the first color difference value of the first image is larger than the first color difference value of the second image and the second color difference value of the first image is smaller than the second color difference value of the second image, determining that the first target subject is in the first difference area of the first image and the second target subject is in the second difference area of the second image.

Optionally, synthesizing the first image and the second image according to the determined target subject includes:

synthesizing a first target subject of the first image to a first difference region of the second image; or,

synthesizing a second target subject of the second image to a second difference region of the first image.

and under the condition that the first color difference value of the first image is smaller than the first color difference value of the second image and the second color difference value of the first image is larger than the second color difference value of the second image, determining that the first target subject is in a first difference area of the second image and the second target subject is in a second difference area of the first image.

synthesizing a second target subject of the first image to a second difference region of the second image; or,

synthesizing a first target subject of the second image to a first difference region of the first image.

Optionally, before determining the color difference value of the first image and the second image, the method further includes:

and carrying out differentiation processing on the first image and the second image.

According to another aspect of the embodiments of the present invention, there is provided a mobile terminal, including: a processor, a memory, and a communication bus, wherein,

the communication bus is used for realizing connection communication between the processor and the memory;

the processor is used for executing the image synthesis processing program stored in the memory so as to realize the following steps:

determining color difference values of the first image and the second image;

Optionally, the processor is further configured to execute an image synthesis processing program to implement the following steps:

performing a differentiation process on the first image and the second image before determining color difference values of the first image and the second image.

According to another aspect of embodiments of the present invention, there is also provided a computer-readable storage medium storing one or more programs, which are executable by one or more processors, to implement the steps of the image synthesis processing method described above.

According to the invention, the color difference value of the first image and the second image is determined; determining a target subject according to the color difference value of the first image and the second image; the first image and the second image are synthesized according to the determined target subject, so that the problem of poor user experience caused by the fact that a background image needs to be shot independently when subject figures of a plurality of images are synthesized into the same image in the related art is solved, shooting steps are simplified, and the user experience is improved.

Drawings

Fig. 1 is a schematic diagram of a hardware structure of an optional mobile terminal for implementing various embodiments of the present invention;

FIG. 2 is a diagram of a wireless communication system for the mobile terminal shown in FIG. 1;

FIG. 3 is a flow diagram of an image composition processing method according to an embodiment of the invention;

FIG. 4 is a diagram of a mobile terminal acquiring a transformation subject according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an image composition process performed by a mobile terminal according to an embodiment of the present invention;

FIG. 6 is a diagram of a mobile terminal completing image synthesis according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a mobile terminal according to an embodiment of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.

The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.

The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex-Long Term Evolution), and TDD-LTE (Time Division duplex-Long Term Evolution).

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.

Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based is described below.

Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present invention, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.

Specifically, the UE201 may be the terminal 100 described above, and is not described herein again.

The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Among them, the eNodeB2021 may be connected with other eNodeB2022 through backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.

The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and charging functions Entity) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.

Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.

Based on the above mobile terminal hardware structure and communication network system, the present invention provides various embodiments of the method.

Example 1

Based on the above mobile terminal, an embodiment of the present invention provides an image synthesis processing method, and fig. 3 is a flowchart of the image synthesis processing method according to the embodiment of the present invention, as shown in fig. 3, the method includes the following steps:

step S301, determining the color difference value of the first image and the second image;

step S302, determining a target subject according to the color difference value of the first image and the second image;

step S303, synthesizing the first image and the second image according to the determined target subject.

Through the steps, determining the color difference value of the first image and the second image; determining a target subject according to the color difference value of the first image and the second image; the first image and the second image are synthesized according to the determined target subject, so that the problem of poor user experience caused by the fact that a background image needs to be shot independently when subject figures of a plurality of images are synthesized into the same image in the related art is solved, shooting steps are simplified, and the user experience is improved.

In this embodiment, taking only two different positions of the target subject as an example, only two images need to be taken, and three images need to be taken in the conventional method, which increases the time consumption by 50%, and the specific algorithm is implemented as follows:

acquiring a transformation subject, wherein the same target subject presents different postures in the same background, the positions of the target subjects are different and are not overlapped, and two images (a first image A and a second image B) are taken in the same background, namely the two images are the same except for the moving target subject.

And the user enters a shooting interface of the mobile terminal through the touch instruction to select a shooting mode. Correspondingly, the mobile terminal acquires a current photographing mode, wherein the current photographing mode is a multi-target subject photographing mode.

The multi-target subject photographing mode may be a mode in which the user performs an instruction triggered by an operation such as corresponding mode selection/switching, for example, the user triggers a desired mode by operating a virtual key or a physical key of the mobile terminal, and the mobile terminal obtains a current photographing mode according to the received instruction after receiving the instruction triggered by the mode selection/switching operation of the user. In other possible implementation manners, the current shooting mode may be a shooting mode that is automatically adjusted by the mobile terminal and can meet the current shooting requirement, and if it is detected that a target subject moves a predetermined distance in the same background in the preview picture, the shooting mode is automatically adjusted to be the multi-target subject shooting mode.

The user takes a picture through the touch instruction, and the mobile terminal obtains a shooting instruction, where the shooting instruction may be an instruction triggered by the user by executing a corresponding shooting operation in the multi-target subject shooting mode, for example, a shooting instruction triggered by the user pressing a virtual shutter key on a display screen of the mobile terminal or a physical key on the side of the mobile terminal. In this embodiment, the instruction is used to instruct the mobile terminal to shoot a moving target subject in the multi-target subject shooting mode. Fig. 4 is a schematic diagram of a mobile terminal acquiring a conversion subject according to an embodiment of the present invention, and as shown in fig. 4, after receiving a photographing instruction from a user, photographed images including a first image a and a second image B are displayed on a moving display interface. It should be noted that, if there are a plurality of images, the images may be displayed in an overlapping manner, and only the last captured image is visible to the user.

And responding to a touch instruction of photographing, processing at least two images based on the current photographing mode, and generating and storing a synthesized image, wherein the synthesized image comprises at least two moving target bodies and a background image.

Further, combining the two images may specifically include the steps of:

determining color difference values of a first image A and a second image B;

determining a target subject according to the color difference value of the first image A and the second image B;

and synthesizing the first image A and the second image B according to the determined target subject.

Fig. 5 is a schematic diagram of an image synthesis process performed by a mobile terminal according to an embodiment of the present invention, and as shown in fig. 5, determining color difference values of the first image a and the second image B may further include:

performing difference processing on the first image A and the second image B to obtain a first difference area D1 and a second difference area D2 of the first image A and a first difference area D1 and a second difference area D2 of the second image B;

amplifying the first difference area D1 to obtain a third difference area, and amplifying the second difference area D2 to obtain a fourth difference area;

calculating color averages of the first image a at the first difference region D1 and the third difference region, and calculating color averages of the second image B at the first difference region D1 and the third difference region; determining a first color difference value of the first image A and the second image B according to the color average value of the first image A in the first difference region D1 and the third difference region and the color average value of the second image B in the first difference region D1 and the third difference region; or,

calculating color averages of the first image a at the second difference region D2 and the fourth difference region, and calculating color averages of the second image B at the second difference region D2 and the fourth difference region; determining a second color difference value of the first image A and the second image B according to the color average value of the first image A in the second difference region D2 and the fourth difference region and the color average value of the second image B in the second difference region D2 and the fourth difference region.

It should be noted that, the content shown in fig. 5 does not need to be displayed to the user, and may be directly processed in the background of the mobile terminal.

In an alternative embodiment, in the case where the first color difference value of the first image a is greater than the first color difference value of the second image B and the second color difference value of the first image a is less than the second color difference value of the second image B, it is determined that the first moving target subject is in the first difference region D1 of the first image a and the second moving target subject is in the second difference region D2 of the second image B. The synthesizing of the first image a and the second image B according to the determined moving target subject may include: synthesizing a first moving target subject of the first image a to a first difference region D1 of the second image B; alternatively, the second moving target subject of the second image B is synthesized to the second difference region D2 of the first image a.

In another optional embodiment, determining the moving target subject according to the color difference values of the first image a and the second image B may further include:

in the case where the first color difference value of the first image a is less than the first color difference value of the second image B and the second color difference value of the first image a is greater than the second color difference value of the second image B, it is determined that the first moving target subject is in the first difference region D1 of the second image B and the second moving target subject is in the second difference region D2 of the first image a.

The synthesizing of the first image a and the second image B according to the determined moving target subject may further include: synthesizing a second moving target subject of the first image a to a second difference region D2 of the second image B; alternatively, the first moving target subject of the second image B is synthesized to the first difference region D1 of the first image a.

Fig. 6 is a schematic diagram of a mobile terminal according to an embodiment of the present invention completing image composition, as shown in fig. 6, after a first image a and a second image B are combined, a composite image is obtained, and a user is prompted whether to save the composite image, and after receiving an instruction to save the composite image, the composite image is saved.

In a preferred embodiment, before determining the color difference values of the first image a and the second image B, the method further comprises: and carrying out differentiation processing on the first image A and the second image B, and enabling background images of the first image A and the second image B to be consistent through the differentiation processing.

The following describes the embodiments of the present invention in detail by taking two images as examples.

Example 1

The specific synthesis process for synthesizing two images in the embodiment of the present invention specifically includes the following steps:

step 1, obtaining a transformation subject, wherein the same target subject presents different postures in the same background, the positions of the target subjects are different and are not overlapped, and two pictures A and B are taken in the same background, namely the two pictures are the same except the moving target subject.

Step 2, registering the two pictures, wherein the step can be omitted, and the step is added to find the difference between A and B more accurately;

step 3, directly performing difference on the A and the B to obtain a difference image with two difference areas, wherein the difference areas are marked as D1 and D2;

step 4, deducing sub-images of A and B at D1 and D2 respectively, and marking the sub-images as A _ D1_0, A _ D2_0, B _ D1_0 and B _ D2_ 0;

step 5, moderately expanding D1 and D2, and deducting sub-images of A and B at expanded D1 and D2 respectively, wherein the sub-images are marked as A _ D1_1, A _ D2_1, B _ D1_1 and B _ D2_ 1;

and 6, assuming that the image is a common RGB three-channel color image, wherein RGB refers to three primary colors of light, namely Red, Green, Blue. Calculating color average values of three channels of A _ D1_0, A _ D1_1, B _ D1_0 and B _ D1_1, namely RA _ D1_0, GA _ D1_0 and BA _ D1_ 0; RA _ D1_1, GA _ D1_1, BA _ D1_ 1; RB _ D1_0, GB _ D1_0, BB _ D1_ 0; RB _ D1_1, GB _ D1_1, BB _ D1_ 1.

Step 7, evaluating the difference size and synthesizing:

V1＝|RA_D1_0-RA_D1_1|+|GA_D1_0-GA_D1_1|+|BA_D1_0-BA_D1_1|

V2＝|RB_D1_0-RB_D1_1|+|GB_D1_0-GB_D1_1|+|BB_D1_0-BB_D1_1|

if V1> V2 indicates that a is more likely to have a target subject at D1 than B is at D1, the sub-image a _ D1_0 at D1 is taken as the target subject and synthesized on the B image;

if V1< V2 indicates that a is less likely to have a target subject at D1 than B is at D1, the sub-image a _ D1_0 at D1 may be combined with the a image.

Example 2

The specific synthesis process for synthesizing two images in the embodiment of the present invention may specifically include the following steps:

and 6, assuming that the image is a common RGB three-channel color image, wherein RGB refers to three primary colors of light, namely Red, Green, Blue. Calculating color average values of three channels of A _ D2_0, A _ D2_1, B _ D2_0 and B _ D2_1, namely RA _ D2_0, GA _ D2_0 and BA _ D2_ 0; RA _ D2_1, GA _ D2_1, BA _ D2_ 1; RB _ D2_0, GB _ D2_0, BB _ D2_ 0; RB _ D2_1, GB _ D2_1, BB _ D2_ 1.

Step 7, evaluating the difference size and synthesizing:

V3＝|RA_D2_0-RA_D2_1|+|GA_D2_0-GA_D2_1|+|BA_D2_0-BA_D2_1|

V4＝|RB_D2_0-RB_D2_1|+|GB_D2_0-GB_D2_1|+|BB_D2_0-BB_D2_1|

if V3> V4 indicates that a is more likely to have a target subject at D2 than B is at D2, the sub-image a _ D2_0 at D2 is taken as the target subject and synthesized on the B image;

if V3< V4 indicates that a is less likely to have a target subject at D2 than B is at D2, the sub-image a _ D1_0 at D2 may be combined with the a image.

It should be noted that the embodiment of the present invention is not limited to the synthesis of two images, and may also synthesize three or more than three images, and for the synthesis of multiple images, the synthesis may be performed by combining two images, for example, if 3 images are synthesized, the synthesis may be performed by combining the first image with the second image and then with the third image, and the synthesis of at least two images may specifically include the following steps:

determining color difference values of a first image A and a second image B; determining a target subject according to the color difference value of the first image A and the second image B; synthesizing the first image a and the second image B according to the determined target subject to obtain a first synthesized image, and synthesizing the first synthesized image and a third image C, specifically including: determining color difference values of the first and third images C; determining a target subject according to the color difference value of the first image A and the third image C; and synthesizing the first image A and the third image C according to the determined target subject to obtain a second synthesized image.

The three or more images can be synthesized in a manner similar to that described above, and will not be described in detail here.

In a preferred embodiment, two images of the plurality of images can be selected to be combined, and the combined images are combined until all the images are combined into one image.

The following describes the embodiments of the present invention in detail by taking three images as examples.

The specific synthesis process for synthesizing three images in the embodiment of the present invention specifically includes the following steps:

step 1, obtaining a transformation subject, wherein the same target subject presents different postures in the same background, the positions of the target subjects are different and are not overlapped, and three pictures A, B and C are taken in the same background, namely the three pictures are the same except the moving target subject.

Step 2, registering the two pictures, which can be omitted, and adding the step to find A, B and C differences more accurately;

Step 7, evaluating the difference size and synthesizing:

V1＝|RA_D1_0-RA_D1_1|+|GA_D1_0-GA_D1_1|+|BA_D1_0-BA_D1_1|

V2＝|RB_D1_0-RB_D1_1|+|GB_D1_0-GB_D1_1|+|BB_D1_0-BB_D1_1|

if V1> V2 indicates that the possibility that the target subject exists at D1 by A is higher than that of B at D1, the sub-image A _ D1_0 at D1 is taken as the target subject, and the target subject is synthesized on the B image to obtain a first synthesized image; the first synthesized image is synthesized with C in the same way as the above-mentioned image A, B, and will not be described herein again.

If V1< V2 indicates that the possibility that a target subject exists at D1 is less than that at D1, the sub-image a _ D1_0 at D1 is taken as the target subject, a second synthesized image is obtained by synthesizing the sub-image a _ D1_0 on the image a, and then the second synthesized image is synthesized with C in the same way as the method for synthesizing the image A, B, which is not described herein again.

Example 2

According to another aspect of the embodiments of the present invention, there is also provided a mobile terminal, and fig. 7 is a schematic diagram of a mobile terminal according to an embodiment of the present invention, as shown in fig. 7, the mobile terminal includes: a processor 110, a memory 109, and a communication bus, wherein,

the communication bus is used for realizing connection communication between the processor 110 and the memory 109;

the processor 110 is configured to execute the image synthesis processing program stored in the memory 109 to implement the following steps:

determining color difference values of the first image and the second image;

Optionally, the processor 110 is further configured to execute an image synthesis processing program to implement the following steps:

According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium storing one or more programs, which are executable by one or more processors 110 to implement the steps of the image synthesis processing method described above.

Example 3

According to another aspect of embodiments of the present invention, there is also provided a computer-readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the following steps of the above-described image synthesis processing method:

s11, determining the color difference value of the first image and the second image;

s12, determining a target subject according to the color difference value of the first image and the second image;

s13, the first image and the second image are synthesized according to the determined target subject.

According to the embodiment of the invention, the color difference value of the first image and the second image is determined; determining a target subject according to the color difference value of the first image and the second image; the first image and the second image are synthesized according to the determined target subject, so that the problem of poor user experience caused by the fact that a background image needs to be shot independently when subject figures of a plurality of images are synthesized into the same image in the related art is solved, shooting steps are simplified, and the user experience is improved.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An image synthesis processing method, comprising:

determining color difference values of the first image and the second image;

2. The method of claim 1, wherein determining the color difference values for the first image and the second image comprises:

3. The method of claim 2, wherein determining a target subject from the color difference values of the first image and the second image comprises:

4. The method of claim 3, wherein compositing the first image and the second image according to the determined target subject comprises:

5. The method of claim 2, wherein determining a target subject from the color difference values of the first image and the second image comprises:

6. The method of claim 5, wherein compositing the first image and the second image according to the determined target subject comprises:

7. The method of any of claims 1 to 6, wherein prior to determining the color difference values for the first image and the second image, the method further comprises:

8. A mobile terminal, characterized in that the mobile terminal comprises: a processor, a memory, and a communication bus, wherein,

determining color difference values of the first image and the second image;

9. The mobile terminal of claim 8, wherein the processor is further configured to execute the image composition processing program to implement the steps of:

10. A computer-readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps of the image synthesis processing method according to any one of claims 1 to 7.