CN112565626B - Video image special effect processing method, device and system and computer readable storage medium - Google Patents
Video image special effect processing method, device and system and computer readable storage medium Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
Abstract
A video image special effect processing method, device, system and computer readable storage medium, comprising: acquiring a video stream and real-time physical data and a moving area of a display device; intercepting a characteristic image in a video stream; respectively establishing a main virtual picture area and an auxiliary virtual picture area corresponding to the size of a display area of the display equipment according to the video stream and the characteristic image; calculating main coordinate data of the main virtual picture area in the moving area according to the physical data; acquiring a position instruction, and calculating the secondary coordinate data of the secondary virtual picture area in the moving area according to the position instruction; respectively importing video stream data and characteristic image data into a main virtual picture area and an auxiliary virtual picture area according to the priority, and intercepting the video data of the main virtual picture area in the mobile area to generate a superimposed video source; displaying the superposed video sources through display equipment; the physical data includes center coordinate data and rotation angle data of the display device; the characteristic image data priority is greater than the priority of the video stream data.
Description
Technical Field
The present application relates to the field of image processing technologies, and in particular, to a method, an apparatus, a system, and a computer-readable storage medium for video image special effect processing.
Background
The special effect display of the image is to output the image to the display area in a certain consecutive sequence in parts, and a certain control is added in the output process to generate a continuous conversion in the vision of human eyes and gradually form the effect of a complete image. In the related art, when special effect display of an image is realized, a display device is fixed on a mechanical device, when the mechanical device moves transversely and longitudinally and rotates at any angle of 360 degrees, a video source is preprocessed through related software, and the video source is processed into an image according with a motion track preset by the mechanical device, so that the image output by the display device is kept stable after the mechanical device runs.
Based on the above phenomena, the following technical problems exist in the related art: the method for generating special effect display needs to replace a video source, or needs to reprocess the video source when the motion track of the mechanical device is reset, so as to keep the position of the special effect image displayed by the display device stable in the motion process of the display device. This process of replacing the video source or resetting the motion profile consumes a lot of time and increases the commissioning cost.
Disclosure of Invention
In order to keep the position of a special effect image stable in real time in the process of arbitrary plane movement of display equipment, the application aims to provide a video image special effect processing method, a video image special effect processing device, a video image special effect processing system and a computer readable storage medium.
In a first aspect, the present application provides a method for processing special effects of a video image, including:
acquiring a video stream and real-time physical data and a moving area of a display device;
intercepting a characteristic image in a video stream;
respectively establishing a main virtual picture area and an auxiliary virtual picture area corresponding to the size of a display area of the display equipment according to the video stream and the characteristic image;
calculating main coordinate data of the main virtual picture area in the moving area according to the physical data;
acquiring a position instruction, and calculating the secondary coordinate data of the secondary virtual screen area in the moving area according to the position instruction;
respectively importing video stream data and characteristic image data into the main virtual picture area and the auxiliary virtual picture area according to the priority, and intercepting the video data of the main virtual picture area in the moving area to generate an overlapped video source;
displaying the superposed video source through the display equipment;
the physical data includes center coordinate data and rotation angle data of the display device; the characteristic image data priority is greater than the priority of the video stream data.
By adopting the technical scheme, the main virtual picture area and the auxiliary virtual picture area are established, the video stream and the characteristic image are respectively displayed on the two picture layers, the position of the display equipment is moved no matter how, the positions of the two picture layers in the moving area are calculated through the position instruction and the physical data, the video stream data and the characteristic image data are respectively led into the main virtual picture area and the auxiliary virtual picture area, the superposed video source in the main virtual picture area can be obtained, the video source does not need to be replaced or the motion track does not need to be reset, and the stability of the special effect image position is kept in real time in the arbitrary plane moving process of the display equipment.
In a preferred example, the method of calculating the main coordinate data of the main virtual screen area in the moving area according to the physical data includes:
establishing a two-dimensional coordinate system by taking the center of the moving area as an origin;
calculating the central coordinate data of the main virtual picture area according to the central coordinate data of the mobile equipment;
and calculating coordinate data of four corner points of the main virtual picture area according to the central coordinate data and the rotation angle data of the main virtual picture area and the diagonal length of the main virtual picture area.
By adopting the technical scheme, the size of the display area of the display equipment corresponds to that of the main virtual picture area, so that the shapes and the sizes of the main virtual picture area and the auxiliary virtual picture area are fixed and known, and when the central coordinate data of the main virtual picture area is determined, the coordinate data of four corner points of the main virtual picture area can be directly calculated through the length of a diagonal line, and the position of each point in the main virtual picture area is further determined.
In a preferred example, the center coordinate data of the mobile device is the distance from the center of the mobile device to two adjacent sides of the moving area.
In a preferred example, the position instructions include synchronization instructions,
when a synchronous instruction is received, the secondary coordinate data of the secondary virtual picture area in the moving area is the central coordinate data of the main virtual picture area.
By adopting the technical scheme, when the characteristic image cannot be displayed in the display equipment due to the movement of the display equipment, the characteristic image can be returned to the picture displayed by the display equipment through the synchronous instruction.
In a preferred example, the position instructions include a fix instruction,
and when a fixing instruction is received, the secondary coordinate data of the secondary virtual screen area in the moving area is preset central coordinate data.
In a preferred example, the preset central coordinate data is central coordinate data of an initial position of the mobile device.
In a second aspect, the present application provides a video image special effect processing apparatus, including:
the data acquisition module is used for acquiring a position instruction, a video stream, and real-time physical data and a moving area of the display device; the physical data includes center coordinate data and rotation angle data of the display device;
the area establishing module is used for respectively establishing a main virtual picture area and an auxiliary virtual picture area corresponding to the size of a display area of the display equipment according to the video stream and the characteristic image;
the data calculation module is used for calculating main coordinate data of the main virtual screen area in the moving area according to the physical data and calculating auxiliary coordinate data of the auxiliary virtual screen area in the moving area according to the position instruction;
the video generation module is used for respectively importing video stream data and characteristic image data into the main virtual picture area and the auxiliary virtual picture area according to the priority, and intercepting the video data of the main virtual picture area in the moving area to generate a superposed video source; the characteristic image data priority is greater than the priority of the video stream data;
and the data output module is used for displaying the superposed video source through the display equipment.
By adopting the technical scheme, the main virtual picture area and the auxiliary virtual picture area are established, the video stream and the characteristic image are respectively displayed on the two picture layers, the position of the display equipment is moved no matter how, the positions of the two picture layers in the moving area are calculated through the position instruction and the physical data, the video stream data and the characteristic image data are respectively led into the main virtual picture area and the auxiliary virtual picture area, the superposed video source positioned in the main virtual picture area can be obtained, the video source does not need to be replaced or the motion track does not need to be reset, and the stability of the special effect image position is kept in real time in the arbitrary plane moving process of the display equipment.
In a third aspect, the present application provides a video image special effect processing system, including:
one or more memories for storing instructions; and
one or more processors configured to retrieve and execute the instructions from the memory, to perform the method of any of claims 1-6.
In a fourth aspect, the present application provides a computer readable storage medium comprising:
a program which, when executed by a processor, causes the video image special effect processing method described above to be performed.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the coordinate data of the main virtual picture area and the auxiliary virtual picture area are calculated according to the physical data and the position instruction which are obtained in real time, and the superposed video source is generated, so that the setting of the position of the characteristic image in the real-time moving process of the display equipment is realized;
2. due to the setting of the synchronization instruction, the characteristic image can be moved synchronously with the display device.
Drawings
Fig. 1 is a flowchart of a video image special effect processing method according to the present application.
Fig. 2 is a schematic flow chart of the calculation of the main coordinate data in the present application.
Fig. 3 is a schematic block diagram of a video image special effect processing apparatus according to the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.
Generally, a display is connected to a host and displays an image under the control of the host, and the host sets a display area, where the storage mode of the display area is actually coordinate data of pixels in the display area. When one host controls one or more displays at the same time, the display area set by the host at least comprises an area formed by splicing one or more display pixel points, the display displays the picture by setting the color and brightness data of each pixel point, and the color data of each pixel point is the video stream input to the display.
The embodiments of the present application will be described in further detail with reference to the drawings attached hereto.
As shown in fig. 1, an embodiment of the present application provides a method for processing a special effect of a video image, and a main flow of the method is described as follows.
Step 100: real-time physical data and moving areas of a video stream and a display device are obtained.
Specifically, the video stream is a video stream to be displayed by a display device; the mobile area is a rectangular area established according to the mobile track of the display equipment, two adjacent sides of the rectangular area are respectively arranged in the vertical direction and the horizontal direction, so that the mobile area is in a non-rotating state relative to the viewing angle of people, and the mobile area comprises any position in the mobile range of the display equipment; the physical data of the display device comprises center coordinate data and rotation angle data of the display device, the center coordinate data of the display device is the distance from the center of the mobile device to two adjacent sides of the moving area, and the rotation angle data is the angle of the display device deviating from the vertical state.
Step 101: and intercepting the characteristic image in the video stream.
Step 102: and respectively establishing a main virtual picture area and an auxiliary virtual picture area corresponding to the size of the display area of the display equipment according to the video stream and the characteristic image.
The shape of the display area of the display device may be any shape, and is preferably rectangular here. Therefore, the main virtual screen region and the secondary virtual screen region are both rectangular regions, and if the display resolution of the display device is 1440x900, the main virtual screen region and the secondary virtual screen region are both 1440x900 regions formed by rectangular arrangement pixels.
Step 103: and calculating main coordinate data of the main virtual picture area in the moving area according to the physical data. Referring to fig. 2, step 103: the method specifically comprises the following steps:
step 103-1: establishing a two-dimensional coordinate system by taking the center of the moving area as an origin;
step 103-2: calculating the central coordinate data of the main virtual picture area according to the central coordinate data of the mobile equipment;
step 103-3: and calculating coordinate data of four corner points of the main virtual picture area according to the central coordinate data and the rotation angle data of the main virtual picture area and the diagonal length of the main virtual picture area.
After a two-dimensional coordinate system is established by taking the center of the moving area as an origin, the positions of four sides of the moving area in the two-dimensional coordinate system are also determined, at the moment, the coordinate data of a point in the two-dimensional coordinate system can be calculated according to the central coordinate data of the display equipment, the coordinate data of the point is the central coordinate data of the main virtual picture area, and finally, the coordinate data of four focuses of the main virtual picture area is calculated according to the central coordinate data of the main virtual picture area and the diagonal length of the main virtual picture area. In the whole process, the coordinate data of the four corner points of the main virtual picture area can be calculated only according to the coordinate data of the center point of the main virtual picture and the rotation angle data, so that the calculation amount for calculating the position of the main virtual picture area is reduced.
As shown in fig. 1, step 104: and calculating secondary coordinate data of the secondary virtual picture area in the moving area according to the position instruction.
The position instruction is an instruction input in the process of adjusting the display content of the display equipment by a user. The position instruction comprises a synchronous instruction and a fixed instruction, and when the synchronous instruction is received, the auxiliary coordinate data of the auxiliary virtual picture area in the moving area is the central coordinate data of the main virtual picture area; when a fixing instruction is received, the secondary coordinate data of the secondary virtual screen area in the moving area is preset central coordinate data, and preferably, the preset central coordinate data is the central coordinate data of the initial position of the mobile device.
The rotation state of the secondary virtual screen area is the same as the rotation state of the mobile device at the initial position, preferably, the mobile device is in a vertical state at the initial position, and if the rotation angle is zero, the secondary virtual screen area is kept in the vertical state. When the mobile device is at the initial position, the center position of the display area of the mobile device is coincided with the center position of the mobile area. When the sub-coordinate data is calculated, the coordinate data of each point of the sub-virtual screen region can be calculated by the size of the sub-virtual screen region and the sub-coordinate data.
Step 105: and respectively importing the video stream data and the characteristic image data into the main virtual picture area and the auxiliary virtual picture area according to the priority. The characteristic image data priority is greater than the priority of the video stream data.
Step 106: and intercepting video data of the main virtual picture area in the mobile area to generate an overlay video source.
Step 107: and displaying the superposed video source through a display device.
Respectively importing the video stream data and the characteristic image data into the main virtual picture area and the auxiliary virtual picture area, namely associating the color and brightness data contained in the video stream data and the characteristic image data with each pixel point in the main virtual picture area and the auxiliary virtual picture area. Because the priority of the characteristic image data is greater than that of the video stream data, when the display device displays the superposed video source, the display content corresponding to the superposed part of the main virtual picture area and the auxiliary virtual picture area is the characteristic image.
According to the video image special effect processing method, the main virtual picture area and the auxiliary virtual picture area are established, the video stream and the characteristic image are respectively displayed on the two picture layers, and the superposed video source is generated in real time by acquiring physical data of the display equipment in real time, so that the characteristic image is kept unchanged in position or moves along with the movement of the display device according to the position instruction.
Referring to fig. 3, in another aspect, an embodiment of the present application further provides a video image special effect processing apparatus, which includes a data acquisition module, a region establishment module, a data calculation module, a video generation module, and a data output module.
And the data acquisition module is used for acquiring the position instruction, the video stream and the real-time physical data and the moving area of the display equipment. The physical data includes center coordinate data and rotation angle data of the display device; the moving area is a rectangular area established according to the moving track of the display equipment; the position instruction is an instruction input in the process of adjusting the display content of the display equipment by a user.
In this embodiment, the manner of acquiring the physical data of the display device in real time is not limited uniquely, and preferably, the following manner may be adopted: the method comprises the steps of collecting a position picture of display equipment through a camera with a fixed position, identifying the characteristics of four right-angle sides of a display area of the display equipment in the position picture through hough transformation, and further identifying position data of an image of the display equipment in the position picture. The camera is fixed in position, the moving area is preset according to the moving track of the display device, the moving area can be overlapped to the position picture in an equal proportion, so that the position data of the moving area in the position picture is obtained, and the physical data of the display device is identified according to the image of the display device and the position data of the moving area in the position picture through an image identification technology.
And the area establishing module is used for respectively establishing a main virtual picture area and an auxiliary virtual picture area corresponding to the size of the display area of the display equipment according to the video stream and the characteristic image.
And the data calculation module is used for calculating main coordinate data of the main virtual picture area in the moving area according to the physical data and calculating auxiliary coordinate data of the auxiliary virtual picture area in the moving area according to the position instruction.
And the video generation module is used for respectively leading video stream data and characteristic image data into the main virtual picture area and the auxiliary virtual picture area according to the priority, and intercepting the video data of the main virtual picture area in the moving area to generate a superposition video source. The characteristic image data priority is greater than the priority of the video stream data.
And the data output module is used for displaying the superposed video source through the display equipment.
Specifically, the working process of the video image special effect processing apparatus may refer to the corresponding process of the video image special effect processing method, which is not described herein again.
The embodiment of the application also discloses a video image special effect processing system, which mainly comprises one or more memories and one or more processors:
the memory is used for storing instructions;
and the processor is used for calling and executing the instruction from the memory and executing the video image special effect processing method.
It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory.
The non-volatile memory may be ROM, programmable Read Only Memory (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), or flash memory.
Volatile memory can be RAM, which acts as external cache memory. There are many different types of RAM, such as Static Random Access Memory (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synclink DRAM (SLDRAM), and direct memory bus RAM.
The processor mentioned in any of the above may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the program of the method for transmitting feedback information. The processing unit and the storage unit may be decoupled, and are respectively disposed on different physical devices, and are connected in a wired or wireless manner to implement respective functions of the processing unit and the storage unit, so as to support the system chip to implement various functions in the foregoing embodiments. Alternatively, the processing unit and the memory may be coupled to the same device.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a computer-readable storage medium, which includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned computer-readable storage medium comprises: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (6)
1. A method for processing special effects of video images is characterized by comprising the following steps:
acquiring a video stream and real-time physical data and a moving area of a display device;
intercepting a characteristic image in a video stream;
respectively establishing a main virtual picture area and an auxiliary virtual picture area corresponding to the size of a display area of the display equipment according to the video stream and the characteristic image;
calculating main coordinate data of the main virtual picture area in the moving area according to the physical data;
acquiring a position instruction, and calculating the secondary coordinate data of the secondary virtual screen area in the moving area according to the position instruction;
respectively importing video stream data and characteristic image data into the main virtual picture area and the auxiliary virtual picture area according to the priority, and intercepting the video data of the main virtual picture area in the moving area to generate an overlapped video source;
displaying the superimposed video source through the display device;
the physical data includes center coordinate data and rotation angle data of the display device; the characteristic image data priority is greater than the priority of the video stream data;
the position instruction comprises a synchronous instruction, and when the synchronous instruction is received, the secondary coordinate data of the secondary virtual picture area in the moving area is the central coordinate data of the main virtual picture area;
the position instruction comprises a fixed instruction, when the fixed instruction is received, the secondary coordinate data of the secondary virtual screen area in the moving area is preset central coordinate data, and the preset central coordinate data is the central coordinate data of the initial position of the display device.
2. The special effect processing method of the video image according to claim 1, wherein: the method for calculating the main coordinate data of the main virtual picture area in the moving area according to the physical data comprises the following steps:
establishing a two-dimensional coordinate system by taking the center of the moving area as an origin;
calculating the central coordinate data of the main virtual picture area according to the central coordinate data of the display equipment;
and calculating coordinate data of four corner points of the main virtual picture area according to the central coordinate data and the rotation angle data of the main virtual picture area and the diagonal length of the main virtual picture area.
3. The special effect processing method of the video image according to claim 2, wherein: and the central coordinate data of the display equipment is the distance from the center of the display equipment to two adjacent edges of the moving area.
4. A video image special effect processing apparatus, comprising:
the data acquisition module is used for acquiring a position instruction, a video stream, and real-time physical data and a moving area of the display device; the physical data includes center coordinate data and rotation angle data of the display device;
the area establishing module is used for respectively establishing a main virtual picture area and an auxiliary virtual picture area corresponding to the size of a display area of the display equipment according to the video stream and the characteristic image;
the data calculation module is used for calculating main coordinate data of the main virtual screen area in the moving area according to the physical data and calculating auxiliary coordinate data of the auxiliary virtual screen area in the moving area according to the position instruction;
the video generation module is used for respectively importing video stream data and characteristic image data into the main virtual picture area and the auxiliary virtual picture area according to the priority, and intercepting the video data of the main virtual picture area in the moving area to generate a superposed video source; the characteristic image data priority is greater than the priority of the video stream data;
the data output module is used for displaying the superposed video source through the display equipment;
the apparatus is further configured such that the position instruction includes a synchronization instruction, and when the synchronization instruction is received, the sub coordinate data of the sub virtual screen region in the moving region is the center coordinate data of the main virtual screen region;
the position instruction comprises a fixed instruction, when the fixed instruction is received, the secondary coordinate data of the secondary virtual screen area in the moving area is preset central coordinate data, and the preset central coordinate data is the central coordinate data of the initial position of the display device.
5. A video image special effects processing system, the system comprising:
one or more memories for storing instructions; and
one or more processors configured to retrieve and execute the instructions from the memory, to perform the method of any of claims 1-3.
6. A computer-readable storage medium, the computer-readable storage medium comprising:
program which, when being executed by a processor, causes the video image special effects processing method according to any one of claims 1 to 3 to be performed.
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