WO2023185347A1 - 一种视频数据的处理方法、装置及计算机设备 - Google Patents

一种视频数据的处理方法、装置及计算机设备 Download PDF

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WO2023185347A1
WO2023185347A1 PCT/CN2023/078404 CN2023078404W WO2023185347A1 WO 2023185347 A1 WO2023185347 A1 WO 2023185347A1 CN 2023078404 W CN2023078404 W CN 2023078404W WO 2023185347 A1 WO2023185347 A1 WO 2023185347A1
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video data
width
cropped
cropping
basic
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PCT/CN2023/078404
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English (en)
French (fr)
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王升翔
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湖南国科微电子股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440263—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA
    • H04N21/440272—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA for performing aspect ratio conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/845—Structuring of content, e.g. decomposing content into time segments
    • H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Definitions

  • the present disclosure relates to the field of data processing, and in particular, to a video data processing method, device and computer equipment.
  • the code stream resolution has developed from Full High Definition (FHD), 4K, to 8K. Due to the increase in resolution, the line buffer used to process video data in the processing chip has increased. The length or width needs to be increased proportionally, which leads to a significant increase in hardware costs.
  • FHD Full High Definition
  • 4K 4K
  • 8K 8K
  • the general processing method in the prior art is to reduce the data during processing to a supported size at the front and rear ends of the processing path, and then enlarge it to the initial size or the size required for output after the processing is completed.
  • this processing method will cause a certain amount of data loss due to the reduction process, which will increase the difficulty of the algorithm, and then enlarging after reduction will lead to poor final image effects, such as aliasing.
  • the present disclosure provides a video data processing method, device and computer equipment.
  • the specific solutions are as follows:
  • inventions of the present disclosure provide a video data processing method.
  • the video data processing method includes:
  • the source video data is split into at least two basic video data in a preset order, wherein the previous basic video in the two adjacent basic video data is The tail of the data partially overlaps with the head of the latter basic video data;
  • the cropped video data are spliced based on the preset order to obtain target video data.
  • the step of cropping edge data segments at both ends of each reference video data includes:
  • edge data segments at both ends of each reference video data are cropped, wherein the cropping width is less than or equal to the overlap width corresponding to the overlapped portion between two adjacent reference video data.
  • the step of calculating the cropping width according to the preset cropping ratio includes:
  • the cropping width is determined according to the product of the coincidence width and the preset cropping ratio.
  • the step of splicing the cropped video data based on the preset order includes:
  • the cropping width is equal to the overlap width corresponding to the overlapped portion between two adjacent reference video data, based on the preset order, the non-overlapping portions of the adjacent two cropped video data are spliced into the target video data.
  • the video data processing method further includes:
  • cropping width is smaller than the overlap width corresponding to the overlapped portion between two adjacent reference video data, perform transparent mixing processing on the overlapped portion between the two adjacent cropped video data to obtain mixed video data;
  • non-overlapping portions of two adjacent cropped video data and the mixed video data are spliced into target video data in sequence.
  • the step of transparently mixing the overlapping portion between two adjacent cropped video data to obtain mixed video data includes:
  • Outbuffer alpha*buffer 1 + (1-alpha)*buffer 2
  • the overlapping portion between the two adjacent cropped video data in the preset order is transparently mixed, where Outbuffer is the mixed video Data, alpha is the mixing parameter, 0 ⁇ alpha ⁇ 1, buffer 1 and buffer 2 are two adjacent cropped video data.
  • the step of splicing the cropped video data based on the preset order to obtain the target video data includes:
  • the smoothed cropped video data are spliced into target video data.
  • an embodiment of the present disclosure provides a video data processing device.
  • the video data processing device includes:
  • a splitting module configured to, if source video data with a width exceeding a preset threshold is received, split the source video data into at least two basic video data in a preset order, wherein two adjacent basic video data The tail of the previous basic video data in and the head of the next basic video data partially overlap;
  • a processing module used to perform preset type data processing on each of the basic video data to obtain corresponding reference video data
  • a cropping module used to crop edge data segments at both ends of each reference video data to obtain cropped video data
  • a splicing module is used to splice the cropped video data based on the preset order to obtain target video data.
  • an embodiment of the present disclosure provides a computer device.
  • the computer device includes a processor and a memory.
  • the memory stores a computer program.
  • the computer program is executed on the processor, the first aspect is implemented.
  • the video data processing method according to any embodiment.
  • embodiments of the present disclosure provide a computer-readable storage medium that stores a computer program, and when the computer program is executed on a processor, any one of the embodiments of the first aspect is implemented.
  • the described video data processing method
  • the present disclosure has the following beneficial effects:
  • the present disclosure splits the source video data into at least two basic video data in a preset order, and the tail of the previous basic video data in the two adjacent basic video data is The headers of the latter basic video data partially overlap; perform preset type data processing on each basic video data to obtain corresponding reference video data; crop the edge data segments at both ends of each reference video data to obtain cropped video data ; Splice the cropped video data based on the preset order to obtain the target video data.
  • this disclosure ensures that the subsequent data processing process will not lose data and improves video data
  • the processing effect reduces the length or width limit of the line buffer.
  • Figure 1 is a schematic flowchart of a video data processing method provided by an embodiment of the present disclosure
  • FIG. 2 is a module block diagram of a video data processing device provided by an embodiment of the present disclosure.
  • Figure 1 is a schematic flow chart of a video data processing method provided by an embodiment of the present disclosure. As shown in Figure 1, the video data processing method mainly includes:
  • Step S101 If source video data with a width exceeding a preset threshold is received, the source video data is split into at least two basic video data in a preset order, wherein the first of the two adjacent basic video data is The tail of one basic video data partially overlaps with the head of the next basic video data.
  • the row buffer is a static random access memory (Dynamic Random Access Memory, referred to as SRAM) solidified inside the integrated circuit (Integrated Circuit, referred to as IC).
  • SRAM Dynamic Random Access Memory
  • IC integrated Circuit
  • video processing will be limited by the row buffer.
  • the source video data is first split into basic video data.
  • the preset threshold can be set by the user according to the maximum width of the video data that can be processed by the line buffer, or can be set according to the user's actual needs, specific application scenarios and historical experience values, and is not further limited here.
  • the width of the source video data exceeds a preset threshold. If the width of the source video data exceeds the preset threshold, perform the step of "splitting the source video data into at least two basic video data in a preset order". Below, an example is used to illustrate the process of splitting the source video data into two basic video data whose width is less than or equal to the preset threshold:
  • 60% of the source length W can be defined as the preset split ratio P, that is, the source video data is split into two basic video data buffer 1 and buffer 2 .
  • the preset split ratio P that is, the source video data is split into two basic video data buffer 1 and buffer 2 .
  • 60%*W ⁇ Q buffer 1 can be 0-60%W
  • buffer 2 can be 40%WW. Therefore, the area corresponding to 10% W between two adjacent basic video data buffer 1 and buffer 2 is the multiplexed part of the two basic video data.
  • the preset split ratio can be customized or adjusted according to the user's actual usage needs or specific application scenarios.
  • the user can configure the preset split ratio through the register.
  • Step S102 Perform preset type data processing on each of the basic video data to obtain corresponding reference video data.
  • each basic video data can be sent to the "processing channel" in sequence for preset type of data processing.
  • the width of the data that the processing channel can support corresponds to the maximum width of the video data that the line buffer can handle.
  • the preset type of data processing is mainly used to enhance the image corresponding to each video data.
  • the preset type includes but is not limited to color adjustment, brightness adjustment, high dynamic range, and sharpening.
  • the source video data is split into two with a width less than or equal to the preset threshold.
  • the two basic video data need to be processed twice by preset types respectively, and there is duplicate data.
  • the time consuming of intermediate timing and repeated data need to be increased to meet the clock requirements. Therefore, in step S102, a clock multiplication process needs to be performed.
  • Step S103 Cut the edge data segments at both ends of each reference video data to obtain cropped video data.
  • a preset cropping ratio can be obtained, a cropping width is calculated based on the preset cropping ratio, and edge data segments at both ends of each reference video data are cropped based on the cropping width.
  • the cropping width may be less than or equal to the overlapping width corresponding to the overlapping portion between two adjacent reference video data.
  • the overlapping width of each reference video data can be obtained first, and the cropping width is determined based on the product of the overlapping width and the preset cropping ratio.
  • the preset cropping ratio can be a cropping ratio configuration value configured by the user through a register.
  • the cropping ratio can be adjusted by configuring the register.
  • the specific value of the preset cropping ratio can be customized according to the user's actual usage needs and specific application scenarios. Here without further qualification.
  • the cropping width is equal to the overlapping width corresponding to the overlapping part between two adjacent reference video data.
  • the preset type of data processing flow in step S102 usually cannot handle the boundaries of the basic video data well.
  • the edges of the reference video data obtained through data processing of each basic video data usually have certain losses, that is, data loss.
  • two adjacent basic video data obtained by splitting the source video data partially overlap. Therefore, by retaining an overlapping area of a certain width in the splicing area of two adjacent basic video data, even if a certain amount of data is lost during data processing, it can be offset as long as the amount of data lost does not exceed the amount of data corresponding to the overlapping part. Eliminate the impact of data loss on the video data processing process. Completely cropping the overlapping area can minimize the impact of data loss on the integrity of subsequent target video data.
  • the cropping width is smaller than the overlapping width corresponding to the overlapping portion between two adjacent reference video data.
  • Step S104 Splice the cropped video data based on the preset order to obtain target video data.
  • step S104 can be subdivided into the following sub-steps:
  • the cropping width is equal to the overlap width corresponding to the overlapped portion between two adjacent reference video data, based on the preset order, the non-overlapping portions of the adjacent two cropped video data are spliced into the target video data;
  • the overlapped portion between the two adjacent cropped video data is transparently mixed to obtain mixed video data; based on the predetermined Assuming an order, the non-overlapping parts of the two adjacent cropped video data and the mixed video data are spliced into the target video data.
  • the overlapping portion between two adjacent cropped video data corresponding to two adjacent basic video data can be transparently mixed to obtain mixed video data. Then, according to the preset order corresponding to each basic video data, the non-overlapping portions of the two adjacent cropped video data corresponding to the two adjacent basic video data and the mixed video data are spliced into the target video data.
  • Alpha transparency blending is a technology used to make objects appear transparent, such as blurry and transparent scenes seen through water, glass, etc.
  • alpha transparency blending technology is used to combine any two images into one image.
  • Outbuffer is the mixed video data
  • alpha is an adjustable mixing parameter
  • 0 ⁇ alpha ⁇ 1 buffer 1 and buffer 2 Crop video data for two adjacent ones.
  • the mixing parameter alpha can be any data between 0 and 1.
  • the specific data can be customized according to the user's actual usage needs and specific application scenarios. , no further restrictions are made here.
  • the cropped video data can also be smoothed, and the smoothing process includes but is not limited to low-pass filtering. Smoothing can solve the problem of burrs that may occur in the splicing or alpha blending process. Then, each smoothed cropped video data is spliced into target video data according to the order of the corresponding basic video data in a preset order.
  • post-splicing processing can be performed based on the actual splicing effect and the selection instructions input by the user. For example, if the low-pass filtering process described above is too strong, it may cause the image composed of each target video data to appear blurry. In this case, post-stitching processes such as sharpening can be used to enhance the image to improve the splicing effect.
  • the video data processing method provided by this disclosure splits the source video data with a width exceeding a preset threshold into multiple basic video data, and separately performs a preset type of data processing on each basic video data to obtain reference video data.
  • Different cropping methods can be used to crop and splice each reference video data. The effect of saving row buffers is obvious, there is no data loss during the processing, and the splicing effect is good.
  • the present disclosure also provides a video data processing device 200.
  • the video data processing device 200 includes:
  • Splitting module 201 is configured to, if source video data with a width exceeding a preset threshold is received, split the source video data into at least two basic video data in a preset order, wherein two adjacent basic videos The tail of the previous basic video data in the data partially overlaps with the head of the next basic video data;
  • the processing module 202 is used to perform preset type data processing on each of the basic video data to obtain corresponding reference video data;
  • the cropping module 203 is used to crop the edge data segments at both ends of each reference video data to obtain cropped video data;
  • the splicing module 204 is used to splice the cropped video data based on the preset order to obtain target video data.
  • a computer device includes a processor and a memory.
  • the memory stores a computer program. When the computer program is executed on the processor, the above video data processing method is implemented.
  • a computer-readable storage medium stores a computer program.
  • the computer program is executed on a processor, the above video data processing method is implemented.
  • the video data processing device, computer equipment and computer-readable storage medium provided by the present disclosure split the source video data whose width exceeds the preset threshold into multiple basic video data, and perform preset type processing on each basic video data individually. Data processing to obtain reference video data. Different cropping methods can be used to crop and splice each reference video data. The effect of saving row buffers is obvious, there is no data loss during the processing, and the splicing effect is good.
  • each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more components for implementing the specified logical function(s). Executable instructions. It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures.
  • each block in the structure diagrams and/or flowchart illustrations, and combinations of blocks in the structure diagrams and/or flowchart illustrations can be configured with specialized hardware-based systems that perform the specified functions or actions. to be implemented, or may be implemented using a combination of dedicated hardware and computer instructions.
  • each functional module or unit in various embodiments of the present disclosure can be integrated together to form an independent part, each module can exist alone, or two or more modules can be integrated to form an independent part.
  • the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present disclosure is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which can be a smart phone, a personal computer, a server, a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code. .

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Abstract

本公开提供一种视频数据的处理方法、装置及计算机设备。该视频数据的处理方法包括：将宽度超过预设阈值的源视频数据按照预设次序拆分为至少两个基础视频数据，相邻两个基础视频数据中的前一基础视频数据的尾部与后一基础视频数据的首部之间部分重合；将各基础视频数据分别进行预设类型的数据处理，得到对应的参考视频数据；对各参考视频数据两端的边缘数据段进行裁剪，得到裁剪视频数据；基于预设次序将各裁剪视频数据进行拼接，得到目标视频数据。通过将源视频数据拆分为长度不超过预设阈值的至少两个基础视频数据，且相邻两个基础视频数据部分重合，保证了后续的数据处理过程不会丢失数据，提高视频数据的处理效果，减少行缓冲区的长度的限制。

Description

一种视频数据的处理方法、装置及计算机设备
相关申请的交叉引用
本公开要求于2022年3月29日提交中国国家知识产权局的申请号为202210319778.3、名称为“一种视频数据的处理方法、装置及计算机设备”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及数据处理领域，尤其涉及一种视频数据的处理方法、装置及计算机设备。
背景技术
在多媒体相关的数据处理领域中，码流分辨率从全高清(Full High Definition，简称FHD)、4K、一直发展到8K，由于分辨率上升导致处理芯片中用于处理视频数据的行缓冲区的长度或者宽度需要同比例增加，进而导致硬件成本大幅增加。
为解决上述技术问题，现有技术的一般处理方法是在处理通路前后端，将处理过程中的数据缩小到能支持的尺寸,处理完成以后再放大到初始尺寸或者输出所需的尺寸。但是这种处理方法由于缩小处理存在一定的数据丢失，会增加算法的难度，且缩小后再放大会导致最终的图像效果较差，比如会产生锯齿等。
所以，亟需一种新的视频处理方法来解决现有的技术问题，降低行缓冲区的长度或宽度，提高视频处理效果。
发明内容
为了解决上述技术问题，本公开提供了一种视频数据的处理方法、装置及计算机设备，具体方案如下：
第一方面，本公开实施例提供了一种视频数据的处理方法，所述视频数据的处理方法包括：
若接收到宽度超过预设阈值的源视频数据，将所述源视频数据按照预设次序拆分为至少两个基础视频数据，其中，相邻两个所述基础视频数据中的前一基础视频数据的尾部与后一基础视频数据的首部之间部分重合；
将各所述基础视频数据分别进行预设类型的数据处理，得到对应的参考视频数据；
对各所述参考视频数据两端的边缘数据段进行裁剪，得到裁剪视频数据；
基于所述预设次序将各所述裁剪视频数据进行拼接，得到目标视频数据。
根据本公开公开的一种具体实施方式，对各所述参考视频数据两端的边缘数据段进行裁剪的步骤，包括：
获取预设裁剪比例；
根据所述预设裁剪比例计算得到裁剪宽度；
基于所述裁剪宽度，裁剪掉各所述参考视频数据两端的边缘数据段，其中，所述裁剪宽度小于或等于相邻两个参考视频数据之间的重合部分对应的重合宽度。
根据本公开公开的一种具体实施方式，根据所述预设裁剪比例计算得到裁剪宽度的步骤，包括：
获取各参考视频数据的重合宽度；
根据所述重合宽度和所述预设裁剪比例的乘积确定所述裁剪宽度。
根据本公开公开的一种具体实施方式，基于所述预设次序将各所述裁剪视频数据进行拼接的步骤，包括：
判断所述裁剪宽度是否等于相邻两个参考视频数据之间的重合部分对应的重合宽度；
若所述裁剪宽度等于相邻两个参考视频数据之间的重合部分对应的重合宽度，基于所述预设次序，将相邻两个的裁剪视频数据中的非重合部分拼接为目标视频数据。
根据本公开公开的一种具体实施方式，判断所述裁剪宽度是否等于相邻两个参考视频数据之间的重合部分对应的重合宽度的步骤之后，所述视频数据的处理方法还包括：
若所述裁剪宽度小于相邻两个参考视频数据之间的重合部分对应的重合宽度，将相邻两个裁剪视频数据之间的重合部分进行透明混合处理，得到混合视频数据；
基于所述预设次序，依次将相邻两个裁剪视频数据中的非重合部分以及所述混合视频数据拼接为目标视频数据。
根据本公开公开的一种具体实施方式，将相邻两个裁剪视频数据之间的重合部分进行透明混合处理，得到混合视频数据的步骤，包括：
基于公式Outbuffer＝alpha*buffer1+(1-alpha)*buffer2将所述预设次序中相邻的两个裁剪视频数据之间的重合部分进行透明混合处理，其中，Outbuffer为所述混合视频数据，alpha为混合参数，0≤alpha≤1，buffer1和buffer2为相邻的两个裁剪视频数据。
根据本公开公开的一种具体实施方式，基于所述预设次序将所述各裁剪视频数据进行拼接，得到目标视频数据的步骤，包括：
将各所述裁剪视频数据进行平滑处理；
基于所述预设次序，将平滑处理后的各裁剪视频数据拼接为目标视频数据。
第二方面，本公开实施例提供了一种视频数据的处理装置，所述视频数据的处理装置包括：
拆分模块,用于若接收到宽度超过预设阈值的源视频数据，将所述源视频数据按照预设次序拆分为至少两个基础视频数据，其中，相邻两个所述基础视频数据中的前一基础视频数据的尾部与后一基础视频数据的首部之间部分重合；
处理模块,用于将各所述基础视频数据分别进行预设类型的数据处理，得到对应的参考视频数据；
裁剪模块,用于对各所述参考视频数据两端的边缘数据段进行裁剪，得到裁剪视频数据；
拼接模块,用于基于所述预设次序将各所述裁剪视频数据进行拼接，得到目标视频数据。
第三方面，本公开实施例提供了一种计算机设备，所述计算机设备包括处理器和存储器，所述存储器存储有计算机程序，所述计算机程序在所述处理器上执行时实现第一方面中任一项实施例所述的视频数据的处理方法。
第四方面，本公开实施例提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序在处理器上执行时实现第一方面中任一项实施例所述的视频数据的处理方法。
相对于现有技术而言，本公开具有以下有益效果：
若接收到宽度超过预设阈值的源视频数据，本公开将源视频数据按照预设次序拆分为至少两个基础视频数据，相邻两个基础视频数据中的前一基础视频数据的尾部与后一基础视频数据的首部之间部分重合；将各基础视频数据分别进行预设类型的数据处理，得到对应的参考视频数据；对各参考视频数据两端的边缘数据段进行裁剪，得到裁剪视频数据；基于预设次序将各裁剪视频数据进行拼接，得到目标视频数据。本公开通过将源视频数据拆分为长度不超过预设阈值的至少两个基础视频数据，且相邻两个基础视频数据部分重合，保证了后续的数据处理过程不会丢失数据，提高视频数据的处理效果，减少行缓冲区的长度或宽度的限制。
附图说明
为了更清楚地说明本公开的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本公开的某些实施例，因此不应被看作是对本公开保护范围的限定。在各个附图中，类似的构成部分采用类似的编号。
图1为本公开实施例提供的一种视频数据的处理方法的流程示意图；
图2为本公开实施例提供的一种视频数据的处理装置的模块框图。
具体实施方式
下面将结合本公开实施例中附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。
通常在此处附图中描述和示出的本公开实施例的组件可以以各种不同的配置来布置和设计。因此，以下对在附图中提供的本公开的实施例的详细描述并非旨在限制要求保护的本公开的范围，而是仅仅表示本公开的选定实施例。基于本公开的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
在下文中，可在本公开的各种实施例中使用的术语“包括”、“具有”及其同源词仅意在表示特定特征、数字、步骤、操作、元件、组件或前述项的组合，并且不应被理解为首先排除一个或更多个其它特征、数字、步骤、操作、元件、组件或前述项的组合的存在或增加一个或更多个特征、数字、步骤、操作、元件、组件或前述项的组合的可能性。
此外，术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
除非另有限定，否则在这里使用的所有术语(包括技术术语和科学术语)具有与本公开的各种实施例所属领域普通技术人员通常理解的含义相同的含义。所述术语(诸如在一般使用的词典中限定的术语)将被解释为具有与在相关技术领域中的语境含义相同的含义并且将不被解释为具有理想化的含义或过于正式的含义，除非在本公开的各种实施例中被清楚地限定。
下面结合附图，对本公开的一些实施方式作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互结合。
参见图1，图1为本公开实施例提供的一种视频数据的处理方法的流程示意图。如图1所示，所述视频数据的处理方法主要包括：
步骤S101，若接收到宽度超过预设阈值的源视频数据，将所述源视频数据按照预设次序拆分为至少两个基础视频数据，其中，相邻两个所述基础视频数据中的前一基础视频数据的尾部与后一基础视频数据的首部之间部分重合。
行buffer是集成电路(Integrated Circuit，简称IC)内部固化的静态随机存取存储器(Dynamic Random Access Memory，简称SRAM)。在实际应用中，视频处理时会受到行buffer的限制，为了解决此技术问题，首先将源视频数据拆分为基础视频数据。所述预设阈值可以是用户根据行buffer所能处理的视频数据的最大宽度进行设置，或是可以根据用户的实际需求、具体应用场景和历史经验值进行设置，这里不做进一步限定。
具体实施时，在接收到源视频数据之后，判断所述源视频数据的宽度是否超过预设阈值。若所述源视频数据的宽度超过所述预设阈值，执行“将所述源视频数据按照预设次序拆分为至少两个基础视频数据”的步骤。下面，针对将源视频数据拆分为两个宽度小于或等于预设阈值的基础视频数据的过程，通过一个示例进行说明：
若源视频数据的宽度W超过预设阈值Q，可以定义源长度W的60％为预设拆分比例P，即将源视频数据拆分为两个基础视频数据buffer1和buffer2。其中，60％*W≤Q，buffer1可以为0-60％W，buffer2可以为40％W-W。因此，相邻两个基础视频数据buffer1和buffer2中间有10％W对应的区域为两个基础视频数据的复用部分。将宽度超过预设阈值的源视频数据拆分为两个宽度小于或等于预设阈值的基础视频数据，分别通过60％W的两个具有一定重 合部分的基础视频数据进行读写，可以避免需要扩大行buffer的尺寸进行视频数据处理，节省硬件电路成本。
具体实施时，预设拆分比例可以根据用户的实际使用需求或者具体应用场景进行自定义或者调整，用户可以通过寄存器对预设拆分比例进行配置。
步骤S102，将各所述基础视频数据分别进行预设类型的数据处理，得到对应的参考视频数据。
将源视频数据拆分为至少两个宽度小于或等于预设阈值的基础视频数据之后，可以将各基础视频数据依次发送至“处理通路”进行预设类型的数据处理。处理通路所能支持的数据的宽度与行buffer所能处理的视频数据的最大宽度相对应。具体地，预设类型的数据处理主要用于将各视频数据对应的图像进行图像增强，预设类型包括但不限于颜色调整、亮度调整、高动态范围以及锐化。
需要说明的是，相对于一个宽度超过预设阈值的源视频数据直接经过一次预设类型的数据处理的理想情况，本公开中将源视频数据拆分为两个宽度小于或等于预设阈值的基础视频数据之后，需要将两个基础视频数据分别经过两次预设类型的数据处理，且有重复数据。这一过程中，中间时序的耗时跟重复的数据需要提高时钟才能满足。因此，在步骤S102中，需要进行时钟倍频的处理。
步骤S103，对各所述参考视频数据两端的边缘数据段进行裁剪，得到裁剪视频数据。
具体实施时，可以获取预设裁剪比例，根据预设裁剪比例计算得到裁剪宽度，基于所述裁剪宽度裁剪掉各所述参考视频数据两端的边缘数据段。其中，所述裁剪宽度可以小于或等于相邻两个参考视频数据之间的重合部分对应的重合宽度。具体地，可以先获取各参考视频数据的重合宽度，根据重合宽度和预设裁剪比例的乘积确定裁剪宽度。
所述预设裁减比例可以是用户通过寄存器配置的裁剪比例配置值，通过配置寄存器可以实现裁剪比例的调整，预设裁剪比例的具体数值可以根据用户的实际使用需求和具体应用场景自定义，这里不做进一步限定。
下面分别对裁剪宽度与相邻两个参考视频数据的重合宽度之间的不同大小关系对应的剪裁方式进行解释说明：
1.裁剪宽度与相邻两个参考视频数据之间的重合部分对应的重合宽度相等。
步骤S102中预设类型的数据处理流程通常不能很好地处理基础视频数据的边界，各基础视频数据经过数据处理得到的参考视频数据的边缘通常会有一定的损失，即数据丢失。而前文所述的步骤S101中，由源视频数据拆分得到的相邻两个基础视频数据之间部分重合。因此，通过将在相邻两个基础视频数据的拼接区域保留一定宽度的重合区域，即使数据处理过程中丢失一定的数据，只要丢失的数据量不超过重合部分对应的数据量，即可抵 消数据丢失对视频数据处理过程产生的影响。而将重合区域完全裁剪掉，可以最大限度地减少数据丢失对后续目标视频数据的完整度的影响。
2.裁剪宽度小于相邻两个参考视频数据之间的重合部分对应的重合宽度。
由于将各参考视频数据进行裁剪时，裁剪视频数据的边缘也会产生毛刺等问题。若通过上述第一种方式裁剪掉各参考视频数据两端的第一宽度的边缘数据段，相邻两个裁剪视频数据之间不能很好地拼接，使得拼接效果较差。为了进一步解决拼接效果差的技术问题，对相邻两个基础视频数据进行裁剪时，可以保留一定宽度的重合区域。通过后续拼接过程将保留的重合区域进行处理，即可在解决参考视频数据边缘毛刺问题的同时，实现拼接效果的优化。
步骤S104，基于所述预设次序将各所述裁剪视频数据进行拼接，得到目标视频数据。
具体地，步骤S104可以细分为下列几个子步骤：
判断所述裁剪宽度是否等于相邻两个参考视频数据之间的重合部分对应的重合宽度；
若所述裁剪宽度等于相邻两个参考视频数据之间的重合部分对应的重合宽度，基于所述预设次序，将相邻两个的裁剪视频数据中的非重合部分拼接为目标视频数据；
若所述裁剪宽度小于相邻两个参考视频数据之间的重合部分对应的重合宽度，将相邻两个裁剪视频数据之间的重合部分进行透明混合处理，得到混合视频数据；基于所述预设次序，依次将相邻两个裁剪视频数据中的非重合部分以及所述混合视频数据拼接为目标视频数据。
由于步骤S103中在解决参考视频数据边缘毛刺问题的同时，也产生了新的技术问题，即相邻两个参考视频数据之间存在多余的重合部分。若直接将裁剪视频数据进行拼接，会使得最终得到的目标视频数据传输产生重复部分，拼接效果差。
因此，可以将相邻的两个基础视频数据对应的两个相邻的裁剪视频数据之间的重合部分进行透明混合处理，得到混合视频数据。然后按照各基础视频数据对应的预设次序，将相邻的两个基础视频数据对应的两个相邻的裁剪视频数据中的非重合部分以及所述混合视频数据拼接为目标视频数据。
具体实施时，可以通过alpha融合将相邻两个裁剪视频数据中的重合部分进行融合。alpha透明混合处理是用来使物体产生透明感的技术，比如透过水、玻璃等物理看到的模糊透明的景象。在图像处理领域，alpha透明混合处理技术用于将任意两张图像合成为一张图像。
可以基于公式Outbuffer＝alpha*buffer1+(1-alpha)*buffer2将预设次序中相邻的两个基础视频数据对应的两个相邻的裁剪视频数据之间的重合部分进行透明混合处理。其中，Outbuffer为所述混合视频数据，alpha为可以调整的混合参数，0≤alpha≤1，buffer1和buffer2 为相邻的两个裁剪视频数据。
一般地，对于本公开中相邻两个裁剪视频数据中完全相同的重合部分，混合参数alpha可以为0-1中的任一数据，具体数据可以根据用户的实际使用需求和具体应用场景自定义，这里不做进一步限定。
具体实施时，还可以将裁剪视频数据进行平滑处理，所述平滑处理包括但不限于低通滤波。平滑处理可以解决拼接或者alpha融合的过程可能存在毛刺的问题。然后将平滑处理后的各裁剪视频数据按照对应的基础视频数据在预设次序中的次序拼接为目标视频数据。
将各裁剪视频数据按照预设次序中的次序拼接为目标视频数据之后，可以根据实际的拼接效果以及用户输入的选择指令进行“拼接后处理”。例如，若前文所述的低通滤波处理过程过强，可能导致各目标视频数据组成的图像出现画面模糊的问题，此时可以使用锐化等拼接后处理流程进行图像增强，提高拼接的效果。
本公开提供的视频数据的处理方法，将宽度超过预设阈值的源视频数据拆分为多个基础视频数据，单独对每个基础视频数据进行预设类型的数据处理，得到参考视频数据。可以采用不同的裁剪方式对各参考视频数据进行裁剪处理以及拼接。节省行buffer的效果明显，且处理过程没有数据丢失，拼接效果好。
与上述方法实施例相对应，参见图2，本公开还提供的一种视频数据的处理装置200，所述视频数据的处理装置200包括：
拆分模块201,用于若接收到宽度超过预设阈值的源视频数据，将所述源视频数据按照预设次序拆分为至少两个基础视频数据，其中，相邻两个所述基础视频数据中的前一基础视频数据的尾部与后一基础视频数据的首部之间部分重合；
处理模块202,用于将各所述基础视频数据分别进行预设类型的数据处理，得到对应的参考视频数据；
裁剪模块203,用于对各所述参考视频数据两端的边缘数据段进行裁剪，得到裁剪视频数据；
拼接模块204,用于基于所述预设次序将各所述裁剪视频数据进行拼接，得到目标视频数据。
此外，还提供一种计算机设备，计算机设备包括处理器和存储器，存储器存储有计算机程序，计算机程序在处理器上执行时实现上述视频数据的处理方法。
此外，还提供一种计算机可读存储介质，计算机可读存储介质存储有计算机程序，计算机程序在处理器上执行时实现上述视频数据的处理方法。
本公开所提供的视频数据的处理装置、计算机设备和计算机可读存储介质的具体实施过程，可以参见上述实施例提供的视频数据的处理方法的具体实施过程，在此不再一一赘 述。
本公开提供的视频数据的处理装置、计算机设备和计算机可读存储介质，将宽度超过预设阈值的源视频数据拆分为多个基础视频数据，单独对每个基础视频数据进行预设类型的数据处理，得到参考视频数据。可以采用不同的裁剪方式对各参考视频数据进行裁剪处理以及拼接。节省行buffer的效果明显，且处理过程没有数据丢失，拼接效果好。
在本公开所提供的几个实施例中，应该理解到，所揭露的装置和方法，也可以通过其它的方式实现。以上所描述的装置实施例仅仅是示意性的，例如，附图中的流程图和结构图显示了根据本公开的多个实施例的装置、方法和计算机程序产品的可能实现的体系架构、功能和操作。在这点上，流程图或框图中的每个方框可以代表一个模块、程序段或代码的一部分，所述模块、程序段或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。也应当注意，在作为替换的实现方式中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个连续的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这依所涉及的功能而定。也要注意的是，结构图和/或流程图中的每个方框、以及结构图和/或流程图中的方框的组合，可以用执行规定的功能或动作的专用的基于硬件的系统来实现，或者可以用专用硬件与计算机指令的组合来实现。
另外，在本公开各个实施例中的各功能模块或单元可以集成在一起形成一个独立的部分，也可以是各个模块单独存在，也可以两个或更多个模块集成形成一个独立的部分。
所述功能如果以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是智能手机、个人计算机、服务器、或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。

Claims (10)

  1. 一种视频数据的处理方法，其中，所述视频数据的处理方法包括：
    若接收到宽度超过预设阈值的源视频数据，将所述源视频数据按照预设次序拆分为至少两个基础视频数据，其中，相邻两个所述基础视频数据中的前一基础视频数据的尾部与后一基础视频数据的首部之间部分重合；
    将各所述基础视频数据分别进行预设类型的数据处理，得到对应的参考视频数据；
    对各所述参考视频数据两端的边缘数据段进行裁剪，得到裁剪视频数据；
    基于所述预设次序将各所述裁剪视频数据进行拼接，得到目标视频数据。
  2. 根据权利要求1所述的视频数据的处理方法，其中，对各所述参考视频数据两端的边缘数据段进行裁剪的步骤，包括：
    获取预设裁剪比例；
    根据所述预设裁剪比例计算得到裁剪宽度；
    基于所述裁剪宽度，裁剪掉各所述参考视频数据两端的边缘数据段，其中，所述裁剪宽度小于或等于相邻两个参考视频数据之间的重合部分对应的重合宽度。
  3. 根据权利要求2所述的视频数据的处理方法，其中，根据所述预设裁剪比例计算得到裁剪宽度的步骤，包括：
    获取各参考视频数据的重合宽度；
    根据所述重合宽度和所述预设裁剪比例的乘积确定所述裁剪宽度。
  4. 根据权利要求2所述的视频数据的处理方法，其中，基于所述预设次序将各所述裁剪视频数据进行拼接的步骤，包括：
    判断所述裁剪宽度是否等于相邻两个参考视频数据之间的重合部分对应的重合宽度；
    若所述裁剪宽度等于相邻两个参考视频数据之间的重合部分对应的重合宽度，基于所述预设次序，将相邻两个的裁剪视频数据中的非重合部分拼接为目标视频数据。
  5. 根据权利要求4所述的视频数据的处理方法，其中，判断所述裁剪宽度是否等于相邻两个参考视频数据之间的重合部分对应的重合宽度的步骤之后，所述视频数据的处理方法还包括：
    若所述裁剪宽度小于相邻两个参考视频数据之间的重合部分对应的重合宽度，将相邻两个裁剪视频数据之间的重合部分进行透明混合处理，得到混合视频数据；
    基于所述预设次序，依次将相邻两个裁剪视频数据中的非重合部分以及所述混合视频数据拼接为目标视频数据。
  6. 根据权利要求5所述的视频数据的处理方法，其中，将相邻两个裁剪视频数据之间的重合部分进行透明混合处理，得到混合视频数据的步骤，包括：
    基于公式Outbuffer＝alpha*buffer1+(1-alpha)*buffer2将所述预设次序中相邻的两个裁剪视频数据之间的重合部分进行透明混合处理，其中，Outbuffer为所述混合视频数据，alpha为混合参数，0≤alpha≤1，buffer1和buffer2为相邻的两个裁剪视频数据。
  7. 根据权利要求1所述的视频数据的处理方法，其中，基于所述预设次序将所述各裁剪视频数据进行拼接，得到目标视频数据的步骤，包括：
    将各所述裁剪视频数据进行平滑处理；
    基于所述预设次序，将平滑处理后的各裁剪视频数据拼接为目标视频数据。
  8. 一种视频数据的处理装置，其中，所述视频数据的处理装置包括：
    拆分模块,用于若接收到宽度超过预设阈值的源视频数据，将所述源视频数据按照预设次序拆分为至少两个基础视频数据，其中，相邻两个所述基础视频数据中的前一基础视频数据的尾部与后一基础视频数据的首部之间部分重合；
    处理模块,用于将各所述基础视频数据分别进行预设类型的数据处理，得到对应的参考视频数据；
    裁剪模块,用于对各所述参考视频数据两端的边缘数据段进行裁剪，得到裁剪视频数据；
    拼接模块,用于基于所述预设次序将各所述裁剪视频数据进行拼接，得到目标视频数据。
  9. 一种计算机设备，其中，所述计算机设备包括处理器和存储器，所述存储器存储有计算机程序，所述计算机程序在所述处理器上执行时实现权利要求1至7中任一项所述的视频数据的处理方法。
  10. 一种计算机可读存储介质，其中，所述计算机可读存储介质存储有计算机程序，所述计算机程序在处理器上执行时实现权利要求1至7中任一项所述的视频数据的处理方法。
PCT/CN2023/078404 2022-03-29 2023-02-27 一种视频数据的处理方法、装置及计算机设备 WO2023185347A1 (zh)

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