WO2021047177A1 - 数据编码方法及装置 - Google Patents

数据编码方法及装置 Download PDF

Info

Publication number
WO2021047177A1
WO2021047177A1 PCT/CN2020/086315 CN2020086315W WO2021047177A1 WO 2021047177 A1 WO2021047177 A1 WO 2021047177A1 CN 2020086315 W CN2020086315 W CN 2020086315W WO 2021047177 A1 WO2021047177 A1 WO 2021047177A1
Authority
WO
WIPO (PCT)
Prior art keywords
image frame
frame sequence
encoding
target
target image
Prior art date
Application number
PCT/CN2020/086315
Other languages
English (en)
French (fr)
Inventor
马传文
范志刚
Original Assignee
西安万像电子科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 西安万像电子科技有限公司 filed Critical 西安万像电子科技有限公司
Publication of WO2021047177A1 publication Critical patent/WO2021047177A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103—Selection of coding mode or of prediction mode
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field

Definitions

  • the present disclosure relates to the field of electronic information technology, and in particular to data encoding methods and devices.
  • the image codec in the prior art mainly implements image compression by means of inter-frame and intra-frame de-redundancy, but this redundancy is only for the image itself, and does not perform encoding processing for the visual redundancy.
  • Visual redundancy is relative to the visual characteristics of the human eye, and the human visual system cannot perceive any changes in the image.
  • the embodiments of the present disclosure provide a data encoding method and device, which can solve the problem of resource waste in the image encoding process.
  • the technical solution is as follows:
  • a data encoding method including:
  • the target image frame sequence being generated according to a display screen within a preset time period of the terminal device;
  • the target image frame sequence is encoded according to the first encoding rule, and the encoding rate corresponding to the first encoding rule is lower than the encoding rate corresponding to the preset encoding rule.
  • the method for obtaining the change frequency corresponding to the target image frame sequence includes:
  • the change frequency corresponding to the target image frame sequence is obtained.
  • the method for obtaining the change frequency corresponding to the target image frame sequence includes:
  • target instruction information is instruction information generated when the terminal device processes an image frame in the target image frame sequence
  • the target instruction information includes a word processing instruction, acquiring the frequency of generation of the word processing instruction;
  • the change frequency corresponding to the target image frame sequence is obtained.
  • encoding the target image frame sequence according to the first encoding rule includes:
  • the target image frame sequence is encoded by compressing the pixel value range corresponding to each image frame in the image frame sequence.
  • encoding the target image frame sequence according to the first encoding rule includes:
  • the method further includes:
  • the target image frame sequence is encoded according to the second encoding rule, and the encoding rate corresponding to the second encoding rule is greater than the encoding rate corresponding to the first encoding rule.
  • the data encoding method provided by the embodiment of the present disclosure generates a target image frame sequence after acquiring the display screen of the terminal device.
  • the change frequency corresponding to the target image frame sequence is calculated.
  • the target image frame sequence is encoded according to the first encoding rule, and when the change frequency is less than or equal to the preset value, the target image frame sequence is encoded according to the second encoding rule. Perform encoding processing.
  • the method provided by the present disclosure adopts different coding strategies according to the speed of the image change in the image frame sequence: when the image in the image frame sequence changes quickly, the user has lower requirements for image quality at this time, and even if the sharpness is reduced, the user will not be affected. Viewing causes more impact, so the encoding rules with lower encoding rates are used for processing, which reduces the amount of data encoding, saves computing resources and network transmission resources; when the image changes slowly in the image frame sequence, the user is concerned about the image quality. The requirements are high, so the coding rules with higher coding rates are used for processing, so as to meet the user's requirements for image frame clarity.
  • the method provided by the present disclosure not only ensures that the image frame display has high definition, but also reduces the amount of data encoding in the image encoding process, and saves computing resources and network transmission resources.
  • a data encoding device including: a receiver and a processor
  • the receiver is connected to the processor
  • the receiver is used to obtain a target image frame sequence, and the target image frame sequence is generated according to a display screen within a preset time period of the terminal device;
  • the processor is configured to obtain a change frequency corresponding to the target image frame sequence according to a preset algorithm, where the change frequency refers to the change frequency between image frames in the image frame sequence;
  • the target image frame sequence is encoded according to the second encoding rule, and the encoding rate corresponding to the second encoding rule is greater than the encoding rate corresponding to the first encoding rule.
  • the processor of the device is also used to:
  • the change frequency corresponding to the target image frame sequence is obtained.
  • the processor of the device is also used to:
  • target instruction information is instruction information generated when the terminal device processes an image frame in the target image frame sequence
  • the target instruction information includes a word processing instruction, acquiring the frequency of generation of the word processing instruction;
  • the change frequency corresponding to the target image frame sequence is obtained.
  • the processor of the device is also used to:
  • the target image frame sequence is encoded by compressing the pixel value range corresponding to each image frame in the image frame sequence.
  • the processor of the device is also used to:
  • Fig. 1 is a flowchart of a data encoding method provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of pixel point distribution in a data encoding method provided by an embodiment of the present disclosure
  • Fig. 3 is a structural diagram of a data encoding device provided by an embodiment of the present disclosure.
  • the embodiment of the present disclosure provides a data encoding method. As shown in FIG. 1, the data encoding method includes the following steps:
  • the acquiring method may include acquiring through software or through hardware.
  • the display screen of the terminal device can be obtained through screen recording software or through an image collector.
  • the aforementioned terminal device may be a terminal device such as a computer and a mobile phone.
  • the target image frame sequence may be generated after obtaining the display screen of the computer desktop for ten seconds.
  • the aforementioned change frequency is used to indicate the change frequency of the image frame content in the target image frame sequence, so that it can be determined whether the target image frame sequence is a rapidly changing image frame sequence.
  • the method provided by the present disclosure can obtain the change frequency corresponding to the target image frame sequence through the instruction sent by the terminal device or the image comparison of the target image frame.
  • the specific judgment method two examples to illustrate the specific judgment method:
  • Example 1 Obtain the change frequency corresponding to the target image frame sequence through the instruction of the terminal device on the display screen:
  • the instruction information includes a word processing instruction, acquiring the frequency of generation of the word processing instruction;
  • the change frequency corresponding to the target image frame sequence is obtained.
  • word processing instructions may be word processing instructions such as Text Rendering Hint (text rendering instruction), Draw String (drawing string instruction), etc.
  • the method provided by the present disclosure can determine whether the current computer image changes rapidly by judging the generation frequency of word processing-related instructions, because when the text content changes rapidly, the generation frequency of word processing-related instructions will increase significantly.
  • Example 2 Obtain the change frequency corresponding to the target image frame sequence through the content of the target image frame sequence:
  • the change frequency corresponding to the target image frame sequence is obtained.
  • image frame sequence including image frame A, image frame B, image frame C, image frame D, image frame E, and image frame F as an example. Compare whether the image frame is the same as the next image frame frame by frame, and determine the number of changes when the image frame is different from the next image frame. After comparing frame by frame, image frame A is the same as image frame B, image frame B is different from image frame C, image frame C is different from image frame D, image frame D is different from image frame E, and image frame E is different from image frame F. Therefore, the number of changes is 5.
  • the change frequency corresponding to the target image frame sequence can be obtained according to the number of changes of the text-type image frames in the image frame sequence.
  • the method for determining that the target image frame sequence contains text image frames includes:
  • Each image frame in the target image frame sequence is divided into at least one macro block; in actual implementation, each frame image can be divided into multiple M ⁇ N macro blocks, for example, each frame image is divided into 16 ⁇ 16 Macroblocks, or 8 ⁇ 8 macroblocks, etc.
  • the coding rate corresponding to the above-mentioned first coding rule is lower than the coding rate corresponding to the preset coding rule.
  • the method provided by the present disclosure also includes confirming that the change frequency is greater than a preset value, which may specifically include:
  • the target image frame sequence is encoded according to the first encoding rule.
  • Each image frame in the image frame sequence can be processed and then encoded.
  • the target image frame sequence After compressing the pixel value range corresponding to each image frame in the image frame sequence, the target image frame sequence is encoded.
  • the value range corresponding to each pixel in the image frame is [0, 255].
  • 8-bit characters can be used to represent the value of each pixel for explanation.
  • the pixel values of two pixels are: 01011101 and 11010111; if it is specified that the first four bits of data are retained, and the last four bits of data are discarded, the values obtained are 0101 and 1101; and the obtained values are regarded as pixels
  • the pixel values are encoded and compressed.
  • the first four digits are still retained, and the last four digits are discarded, which can be specified as dividing the current pixel value (decimal) by the step value (for example, 16), and the quotient obtained is taken as The integer part. For example, two points with pixel values 240 and 180, processed in this way, the pixel values become 15 and 12.
  • the encoded image frame is sent to the decoding device; after the decoding device decodes according to the corresponding decoding algorithm, the decoded value needs to be multiplied by The step value, such as 16, can get the final displayed pixel value.
  • the pixels are transformed in the frequency domain.
  • the pixels corresponding to the low-frequency components are retained, and the pixels corresponding to the high-frequency components are discarded; for example, in JPEG, the pixels are subjected to DCT (discrete cosine) transformation.
  • DCT discrete cosine
  • the energy of the image is concentrated in the low frequency part after the discrete cosine transform, so only the image frame corresponding to the DC (direct current) part is processed, which can not only ensure the image quality, but also improve the compression rate.
  • the target image frame sequence After reducing the pixel value corresponding to each image frame in the image frame sequence, the target image frame sequence is encoded.
  • the adjacent preset number of pixels can be divided into one group by the image frame; after dividing into several groups, the pixel at a certain preset position in the group is designated as the reference pixel. ; Finally, set the pixel value of all pixels in the same group to be the same as the reference pixel.
  • the pixel point A1 to the pixel point A4 are the first group
  • the pixel point B1 to the pixel point B4 are the second group.
  • the pixel point C1 to the pixel point C4 are in the third group
  • the pixel point D1 to the pixel point D4 are in the fourth group.
  • the pixel A1 is used as the reference pixel or pixel in the first group.
  • B1 is the reference pixel of the second group, the pixel C1 is the reference pixel of the third group, and the pixel D1 is the reference pixel of the fourth group.
  • the pixel values of other pixels in each group are set to be the same as the reference pixel.
  • the image color richness in the image frame sequence will be reduced to a certain extent, but the image content can still be distinguished.
  • the method provided in the present disclosure can be applied to the encoding process of the image displayed on the computer desktop when it is implemented. For example, when the user browses word documents, PDF documents or web pages, etc., by quickly dragging the scroll bar, the document or page quickly reaches the desired location. During this operation, the sliding speed of the display screen is very fast, and the user The content of the displayed image during the sliding process is only a rough view, and no attention is paid to the details. Therefore, for the computer display images with rapidly changing content in this situation, there is no need to perform high-quality encoding processing, and the encoding quality can be reduced, so as to reduce the amount of data encoding and improve the encoding efficiency.
  • the target image frame sequence when the change frequency of the target image frame sequence is less than or equal to the preset value, the target image frame sequence can be encoded according to the second encoding rule.
  • the code rate corresponding to the above-mentioned second coding rule is greater than the code rate corresponding to the first coding rule.
  • the normal encoding processing effect can be guaranteed, thereby improving the display of the target image frame sequence Effects, such as clarity and color richness, ensure a high user experience and meet the user's needs for high clarity.
  • the data encoding method provided by the embodiment of the present disclosure generates a target image frame sequence after acquiring the display screen of the terminal device.
  • the change frequency corresponding to the target image frame sequence is calculated.
  • the target image frame sequence is encoded according to the first encoding rule, and when the change frequency is less than or equal to the preset value, the target image frame sequence is encoded according to the second encoding rule. Perform encoding processing.
  • the method provided by the present disclosure adopts different coding strategies according to the speed of the image change in the image frame sequence: when the image in the image frame sequence changes quickly, the user has lower requirements for image quality at this time, and even if the sharpness is reduced, the user will not be affected. Viewing causes more impact, so the encoding rules with lower encoding rates are used for processing, which reduces the amount of data encoding, saves computing resources and network transmission resources; when the image changes slowly in the image frame sequence, the user is concerned about the image quality. The requirements are high, so the coding rules with higher coding rates are used for processing, so as to meet the user's requirements for image frame clarity.
  • the method provided by the present disclosure not only ensures that the image frame display has high definition, but also reduces the amount of data encoding in the image encoding process, and saves data computing resources and network transmission resources.
  • the data encoding device 30 includes: a receiver 301 and a processor 302;
  • the receiver 301 is connected to the processor 302, and the connection may be a hardware connection or a software connection;
  • the receiver 301 is configured to obtain a target image frame sequence, and the target image frame sequence is generated according to a display screen within a preset time period of the terminal device. For example, it can be acquired through an image acquisition module or through software.
  • the processor 302 is configured to obtain a change frequency corresponding to the target image frame sequence according to a preset algorithm, where the change frequency refers to the change frequency between image frames in the image frame sequence;
  • the target image frame sequence is encoded according to the first encoding rule, and the encoding rate corresponding to the first encoding rule is lower than the encoding rate corresponding to the preset encoding rule.
  • the target image frame sequence is encoded according to the second encoding rule, and the encoding rate corresponding to the second encoding rule is greater than the encoding rate corresponding to the first encoding rule.
  • the processor 302 in the apparatus 30 provided in the present disclosure is further configured to:
  • the change frequency corresponding to the target image frame sequence is obtained.
  • the processor 302 in the apparatus 30 provided in the present disclosure is further configured to:
  • target instruction information is instruction information generated when the terminal device processes an image frame in the target image frame sequence
  • the target instruction information includes a word processing instruction, acquiring the frequency of generation of the word processing instruction;
  • the change frequency corresponding to the target image frame sequence is obtained.
  • the processor 302 in the apparatus 30 provided in the present disclosure is further configured to:
  • the target image frame sequence is encoded by compressing the pixel value range corresponding to each image frame in the image frame sequence.
  • the processor 302 in the apparatus 30 provided in the present disclosure is further configured to:
  • the device 30 provided by the present disclosure further includes a transmitter 303, which is configured to send the encoded target image frame sequence to the display device, or to the decoding device, or to the The receiving device sends.
  • the data encoding device provided by the embodiment of the present disclosure generates a target image frame sequence after acquiring the display screen of the terminal device.
  • the change frequency corresponding to the target image frame sequence is calculated.
  • the target image frame sequence is encoded according to the first encoding rule, and when the change frequency is less than or equal to the preset value, the target image frame sequence is encoded according to the second encoding rule. Perform encoding processing.
  • the method provided by the present disclosure adopts different coding strategies according to the speed of the image change in the image frame sequence: when the image in the image frame sequence changes quickly, the user has lower requirements for image quality at this time, and even if the sharpness is reduced, the user will not be affected. Viewing causes more impact, so the encoding rules with lower encoding rates are used for processing, which reduces the amount of data encoding, saves computing resources and network transmission resources; when the image changes slowly in the image frame sequence, the user is concerned about the image quality. The requirements are high, so the coding rules with higher coding rates are used for processing, so as to meet the user's requirements for image frame clarity.
  • the method provided by the present disclosure not only ensures that the image frame display has high definition, but also reduces the amount of data encoding in the image encoding process, and saves computing resources and network transmission resources.
  • the embodiment of the present disclosure also provides a computer-readable storage medium.
  • the non-transitory computer-readable storage medium may be a read-only memory (English: Read Only Memory, ROM), random access memory (English: Random Access Memory, RAM), CD-ROM, magnetic tape, floppy disk and optical data storage device, etc.
  • the storage medium stores computer instructions for executing the data encoding method described in the embodiment corresponding to FIG. 1, which will not be repeated here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

本公开提供一种数据编码方法及装置，涉及电子信息技术领域，能够解决对图像帧进行编码处理时资源浪费的问题。具体技术方案为：在获取终端设备的显示画面后，生成目标图像帧序列。根据预设算法，计算出该目标图像帧序列对应的变化频率。根据该变化频率，当变化频率大于预设值时，根据第一编码规则对所述目标图像帧序列进行编码处理，当变化频率小于或者等于预设值，根据第二编码规则对所述目标图像帧序进行编码处理。本公开用于图像编码。

Description

数据编码方法及装置 技术领域
本公开涉及电子信息技术领域，尤其涉及数据编码方法及装置。
背景技术
随着信息技术的发展，人们对通信业务的要求不断增长，图像通信和和通信网容量的矛盾也日益突出。尤其是对于视频图像通信来说，由于其庞大的数据量，如果不进行图像压缩，将难以进行数据的传输和存储。因此，图像压缩能力对于视频图像来说，显得尤为重要。
现有技术中的图像编解码器主要通过帧间和帧内去冗余的方式实现图像压缩，但是这种冗余只是针对图像本身，没有针对注视觉冗余进行编码处理。视觉冗余是相对于人眼的视觉特性而言的，人类的视觉系统并不能对图像画面的任何变化都能感觉到。
例如，当图像快速变化时，人眼是无法清晰地捕获每一帧图像的，这种场景中如果每一帧图像都按照高质量进行编码、传输，不仅对数据编码资源和带宽资源的严重浪费，也并不能提高用户的视觉感受。
发明内容
本公开实施例提供一种数据编码方法及装置，能够解决图像编码处理过程中资源浪费的问题。所述技术方案如下：
根据本公开实施例的第一方面，提供一种数据编码方法，该方法包括：
获取目标图像帧序列，该目标图像帧序列是根据终端设备预设时间段内的显示画面生成；
根据预设算法，获取该目标图像帧序列对应的变化频率，该变化频率是指该图像帧序列中图像帧之间的变化频率；
当该变化频率大于预设值时，根据第一编码规则对该目标图像帧序列进行编码处理，所述第一编码规则对应的编码率低于预设编码规则对应的编码率。
在一个实施例中，该方法中获取该目标图像帧序列对应的变化频率，包括：
逐帧对比该图像帧序列中当前图像帧与该当前图像帧对应的下一帧图像帧，获取该图像帧序列中图像帧的变化个数；
根据该变化个数，获取该目标图像帧序列对应的变化频率。
在一个实施例中，该方法中获取该目标图像帧序列对应的变化频率，包括：
获取目标指令信息，该目标指令信息是该终端设备处理该目标图像帧序列中图像帧时生成的指令信息；
解析该目标指令信息，根据解析结果，确定该目标指令信息中是否包括文字处理指令；
当该目标指令信息中包括文字处理指令时，获取该文字处理指令的产生频率；
根据该文字处理指令的产生频率，获取该目标图像帧序列对应的变化频率。
在一个实施例中，该方法中根据第一编码规则对该目标图像帧序列进行编码处理，包括：
通过对该图像帧序列中每一图像帧对应的像素点取值范围进行压缩处理，对该目标图像帧序列进行编码处理。
在一个实施例中，该方法中根据第一编码规则对该目标图像帧序列进行编码处理，包括：
对该图像帧序列中每个图像帧进行频域变换处理后，通过对该频率低于预设值的该图像帧进行编码处理，对于频率高于或者等于预设值的该图像帧不进行编码处理，对该目标图像帧序列进行编码处理。
在一个实施例中，该方法还包括：
当该变化频率小于或者等于预设值时，根据第二编码规则对该目标图像帧序进行编码处理，该第二编码规则对应的编码率大于该第一编码规则对应的编码率。
本公开实施例提供的数据编码方法，在获取终端设备的显示画面后，生成目标图像帧序列。根据预设算法，计算出该目标图像帧序列对应的变化频率。根据该变化频率，当变化频率大于预设值时，根据第一编码规则对该目标图像帧序列进行编码处理，当变化频率小于或者等于预设值，根据第二编码规则对该目标图像帧序进行编码处理。本公开所提供的方法根据图像帧序列中图像变化的快慢采取不同的编码策略：当图像帧序列中图像变化快时，此时用户对图像质量要求较低，清晰度即便降低也不会对用户观看造成较多影响，因此采用编码率较低的编码规则进行处理，从而减少了数据编码量，节省了计算资源和网络传输资源；当图像帧序列中图像变化慢时，此时用户对图像质量要求较高，因此采用编码率较高的编码规则进行处理，从而满足用户对于图像帧清晰度的要求。本公开所提供的方法不仅保证了图像帧显示具有较高的清晰度的同时，减少了图像编码过程中的数据编码量，节省了计算资源和网络传输资源。
根据本公开实施例的第二方面，提供一种数据编码装置，包括：接收器和处理器，
该接收器与该处理器相连接；
该接收器，用于获取目标图像帧序列，该目标图像帧序列是根据终端设备预设时间段内的显示画面生成；
该处理器，用于根据预设算法，获取该目标图像帧序列对应的变化频率，该变化频率是指该图像帧序列中图像帧之间的变化频率；
当该变化频率大于预设值时，根据第一编码规则对该目标图像帧序列进行编码处理，该第一编码规则对应的编码率低于预设编码规则对应的编码率；
当该图像数据的变化频率小于或者等于预设值，根据第二编码规则对该目标图像帧序进行编码处理，该第二编码规则对应的编码率大于该第一编码规则对应的编码率。
在一个实施例中该装置的处理器还用于，
逐帧对比该图像帧序列中当前图像帧与该当前图像帧对应的下一帧图像帧，获取该图像帧序列中图像帧的变化个数；
根据该变化个数，获取该目标图像帧序列对应的变化频率。
在一个实施例中该装置的处理器还用于，
获取目标指令信息，该目标指令信息是该终端设备处理该目标图像帧序列中图像帧时生成的指令信息；
解析该目标指令信息，根据解析结果，确定该目标指令信息中是否包括文字处理指令；
当该目标指令信息中包括文字处理指令时，获取该文字处理指令的产生频率；
根据该文字处理指令的产生频率，获取该目标图像帧序列对应的变化频率。
在一个实施例中该装置的处理器还用于，
通过对该图像帧序列中每一图像帧对应的像素点取值范围进行压缩处理，对该目标图像帧序列进行编码处理。
在一个实施例中该装置的处理器还用于，
对该图像帧序列中每个图像帧进行频域变换处理后，通过对该频率低于预设值的该图像帧进行编码处理，对于频率高于或者等于预设值的该图像帧不进行编码处理，对该目标图像帧序列进行编码处理。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
图1是本公开实施例提供的一种数据编码方法的流程图；
图2是本公开实施例提供的一种数据编码方法中的像素点分布示意图；
图3是本公开实施例提供的一种数据编码装置的结构图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
实施例一
本公开实施例提供一种数据编码方法，如图1所示，该数据编码方法包括以下步骤：
101、获取目标图像帧序列，该目标图像帧序列是根据终端设备预设时间段内的显示画面生成
上述获取目标图像帧之前，还包括获取终端设备的显示画面，其获取方式可以包括通过软件方式或者通过硬件方式获取。如，通过录屏软件或者通过图像采集器获取终端设备的显示画面。
上述的终端设备可以是电脑、手机等终端设备。
在具体实施中可以是获取十秒的电脑桌面的显示画面后，生成目标图像帧序列。
102、根据预设算法，获取该目标图像帧序列对应的变化频率。
上述的变化频率是用于指示目标图像帧序列中图像帧内容的变化频率，从而可以判断该目标图像帧序列是不是快速变换的图像帧序列。
本公开所提供的方法在可以通过终端设备发送的指令或者目标图像帧的图像对比，获取目标图像帧序列对应的变化频率，此处列举俩示例阐述其具体的判断方法：
示例一：通过终端设备对显示画面的指令获取目标图像帧序列对应的变化频率：
获取该终端设备对该显示画面生成的指令信息；
解析该指令信息，根据解析结果，确定该指令信息中是否包括文字处理指令；
当该指令信息中包括文字处理指令时，获取该文字处理指令的产生频率；
根据该文字处理指令的产生频率，获取该目标图像帧序列对应的变化频率。
上述的文字处理指令，可以是Text Rendering Hint(文本渲染指令)、Draw String(绘制字符串指令)等文字处理指令。
本公开所提供的方法可以通过判断文字处理相关指令的产生频率来确定当前计算机图像是否发生快速变化，这是因为当文字内容发生快速变化时，与文字处理相关的指令的产生频率会显著提高。
示例二：通过目标图像帧序列的内容获取目标图像帧序列对应的变化频率：
逐帧对比该图像帧序列中当前图像帧与该当前图像帧对应的下一帧图像帧，获取该图像帧序列对应的变化个数；
根据该变化个数，获取该目标图像帧序列对应的变化频率。
此处以图像帧序列按照时间次序，包括图像帧A、图像帧B、图像帧C、图像帧D、图像帧E、图像帧F为例阐述获取变化个数。逐帧对比图像帧是否与下一个图像帧相同，当图像帧与下一个图像帧不同时，确定变化个数。逐帧对比之后，图像帧A与图像帧B相同、图像帧B与图像帧C不同、图像帧C与图像帧D不同、图像帧D与图像帧E不同、图像帧E与图像帧F不同，因此变化个数为5。
进一步的可以先确定该图像帧序列中是否包含文字类型的图像帧，再针对图像帧序列中的文字类型的图像帧的变化个数，获取该目标图像帧序列对应的变化频率。
上述判断方法中确定目标图像帧序列中包含文字图像帧的方法包括：
将该目标图像帧序列中的每一个图像帧划分成至少一个宏块；实际实现时，可以将每帧图像划分为多个M×N的宏块，比如，将每帧图像划分为16×16的宏块，或者8×8的宏块等等。
逐块对该每一个图像帧进行检测处理，确定该每一帧图像中文字宏块占比；
当该图像的文字宏块占比大于第二预设阈值时，判定该图像帧为文字帧。
本实施方式中如果文字类型的图像帧的连续变化率超过预设阈值，则确定当前超过预设阈值的文字帧发生了快速变化。
103、当该变化频率大于预设值时，根据第一编码规则对该目标图像帧序列进行编码处理。
上述第一编码规则对应的编码率低于预设编码规则对应的编码率。
本公开所提供的方法还包括确认该变化频率大于预设值，具体可以包括：
当该文字处理指令的产生频率大于第一预设阈值时，确定当该目标图像帧序列对应的变化频率大于预设值。
或，当该文字帧的连续变化率大于第三预设阈值，确定当该目标图像帧序列对应的变化频率大于预设值。
本公开所提供的方法中根据第一编码规则对该目标图像帧序列进行编码处理，可以通过对该图像帧序列中每一图像帧进行处理后进行编码，此处列举三个示例进行阐释，并不代表本公开局限于此。
示例一：
通过该图像帧序列中每一图像帧对应的像素值取值范围进行压缩处理后，对该目标图像帧序列进行编码处理。
以图像帧中每一个像素对应的取值范围是[0，255]，将像素值表示为2进制时，可以用8位字符来表示每一个像素的取值进行阐述。
获取该图像帧序列中每一图像帧对应的像素值后，直接截取高位bit，舍弃低位bit，即只保留高位数字而舍弃低位数字提高压缩率。比如，两个像素点的像素值分别是：01011101和11010111；如果规定保留前四位数据，而丢弃后四位数据，则得到的数值为0101和1101；而所得到的数值即被作为像素点的像素值进行编码压缩。
或者，在对图像帧处理时，仍然保留前四位，舍弃后四位数值，可以规定为将当前像素值(10进制)除以步进值(比如，16)后，得到的商值取整数部分。例如，像素值为240和180的两个点，按此方式处理后，像素值变为15和12。
通过上述两种方式，原本取值范围为[0，255]的像素点，其取值范围变 为[0，15]。
上述只是两种不同的实现方式，但是最终达到的效果是一样的。
进一步的，在编码设备根据第一编码规则对图像帧进行像素值的编码处理后，发送该已编码图像帧到解码设备；解码设备按照相应解码算法进行解码后，需要对解码得到的值乘以步进值，比如16，才能得到最终显示的像素值。
示例二：
对该目标图像帧序列进行频域变换处理，对频率低于预设值的图像帧序列进行编码处理，对于频率高于或者等于预设值的图像帧序列不进行编码处理。具体的，对像素点进行频域变换，对于变换后的结果，只保留低频分量对应的像素点，而舍弃高频分量对应的像素点；例如JPEG中，对像素点进行DCT(离散余弦)变换处理后，图像的能量都集中在离散余弦变换后的低频部分，因此只处理DC(直流)部分对应的图像帧，既能保证图像质量，也能提高压缩率。
示例三：
通过降低该图像帧序列中每一图像帧对应的像素值后，对该目标图像帧序列进行编码处理。
其中降低图像帧的像素值，可以通过图像帧中将相邻的预设数量个像素点划分为一组；划分为若干组后指定该组中某一预设位置上的像素点为参考像素点；最后将同组内所有像素点的像素值设置为与参考像素点相同。
可参照附图2中的像素点分布示意图，先选择相邻的4个像素点为一组，比如，像素点A1至像素点A4为第一组，像素点B1至像素点B4为第二组、像素点C1至像素点C4为第三组，像素点D1至像素点D4为第四组。
再将指定位置上的像素点设置为参考像素点。这里的指定位置可以根据实际需要进行设定，比如，可以将左上角第一个像素点设置为参考像素点，基于附图2，则将像素点A1作为第一组的参考像素点、像素点B1作为第二组的参考像素点、像素点C1作为第三组的参考像素点、像素点D1成为作为第四组的参考像素点。
最后将每一组中其它像素点的像素值均设置成与参考像素点相同。
通过上述处理后，图像帧序列中的图像色彩丰富度会有一定程度的下降，但是图像内容还是可以分辨的。
本公开所提供的方法在具体实现时，可以应用在电脑桌面显示图像的编码处理中。如在用户浏览word文档、PDF文档或者网页等等，通过快速拖动滚动条，使文档或者页面快速到达所希望的定位位置时，在此操作过程中，显示画面的滑动速度非常快，而用户对于滑动过程中的对显示图像的内容只是粗略的浏览，并不关注其中的细节。因此，针对这种情况内容快速变化的计算机显示图像，无需进行高质量编码处理，可以降低编码的质量，以降低数据编码量，提高编码效率。
本公开所提供的方法，当该目标图像帧序列的变化频率小于或者等于预设值，可以根据第二编码规则对该目标图像帧序进行编码处理。
上述第二编码规则对应的码率大于该第一编码规则对应的码率。
当图像帧序列不是快速变化的图像帧时，根据编码率较高的第二编码规则对该目标图像帧序进行编码处理之后，能够保证正常的编码处理效果，从而提高了目标图像帧序列的显示效果，如清晰度、色彩丰富度，就保证了用户体验较高，满足了用户对于清晰度高的需求。
本公开实施例提供的数据编码方法，在获取终端设备的显示画面后，生成目标图像帧序列。根据预设算法，计算出该目标图像帧序列对应的变化频率。根据该变化频率，当变化频率大于预设值时，根据第一编码规则对该目标图像帧序列进行编码处理，当变化频率小于或者等于预设值，根据第二编码规则对该目标图像帧序进行编码处理。本公开所提供的方法根据图像帧序列中图像变化的快慢采取不同的编码策略：当图像帧序列中图像变化快时，此时用户对图像质量要求较低，清晰度即便降低也不会对用户观看造成较多影响，因此采用编码率较低的编码规则进行处理，从而减少了数据编码量，节省了计算资源和网络传输资源；当图像帧序列中图像变化慢时，此时用户对图像质量要求较高，因此采用编码率较高的编码规则进行处理，从而满足用户对于图像帧清晰度的要求。本公开所提供的方法不仅保证了图像帧显示具有较高的清晰度的同时，减少了图像编码过程中的数据编码量，节省了数据计算资源和网络传输资源。
实施例二
基于上述图1对应的实施例中所描述的数据编码方法，下述为本公开装置实施例，可以用于执行本公开方法实施例。
本公开实施例提供一种数据编码装置，如图3所示，该数据编码装置30包括：接收器301和处理器302；
该接收器301与该处理器302相连接，该连接可以是硬件连接和软件连接；
该接收器301，用于获取目标图像帧序列，该目标图像帧序列是根据终端设备预设时间段内的显示画面生成。例如通过图像采集模块获取，或者通过软件方式获取。
该处理器302，用于根据预设算法，获取该目标图像帧序列对应的变化频率，该变化频率是指该图像帧序列中图像帧之间的变化频率；
当该变化频率大于预设值时，根据第一编码规则对该目标图像帧序列进行编码处理，该第一编码规则对应的编码率低于预设编码规则对应的编码率。
当该图像数据的变化频率小于或者等于预设值，根据第二编码规则对该目标图像帧序进行编码处理，该第二编码规则对应的编码率大于该第一编码规则对应的编码率。
在可选实施例中，本公开所提供的的装置30中的处理器302还用于，
逐帧对比该图像帧序列中当前图像帧与该当前图像帧对应的下一帧图像帧，获取该图像帧序列中图像帧的变化个数；
根据该变化个数，获取该目标图像帧序列对应的变化频率。
在可选实施例中，本公开所提供的的装置30中的处理器302还用于，
获取目标指令信息，该目标指令信息是该终端设备处理该目标图像帧序列中图像帧时生成的指令信息；
解析该目标指令信息，根据解析结果，确定该目标指令信息中是否包括文字处理指令；
当该目标指令信息中包括文字处理指令时，获取该文字处理指令的产生频率；
根据该文字处理指令的产生频率，获取该目标图像帧序列对应的变化频 率。
在可选实施例中，本公开所提供的的装置30中的处理器302还用于，
通过对该图像帧序列中每一图像帧对应的像素点取值范围进行压缩处理，对该目标图像帧序列进行编码处理。
在可选实施例中，本公开所提供的的装置30中的处理器302还用于，
对该图像帧序列中每个图像帧进行频域变换处理后，通过对该频率低于预设值的该图像帧进行编码处理，对于频率高于或者等于预设值的该图像帧不进行编码处理，对该目标图像帧序列进行编码处理。
在可选实施例中，本公开所提供的的装置30还包括发送器303，该发送器303，用于将编码处理后的目标图像帧序列向显示设备发送，或者向解码装置发送，或者向接收设备发送。
本公开实施例提供的数据编码装置，在获取终端设备的显示画面后，生成目标图像帧序列。根据预设算法，计算出该目标图像帧序列对应的变化频率。根据该变化频率，当变化频率大于预设值时，根据第一编码规则对该目标图像帧序列进行编码处理，当变化频率小于或者等于预设值，根据第二编码规则对该目标图像帧序进行编码处理。本公开所提供的方法根据图像帧序列中图像变化的快慢采取不同的编码策略：当图像帧序列中图像变化快时，此时用户对图像质量要求较低，清晰度即便降低也不会对用户观看造成较多影响，因此采用编码率较低的编码规则进行处理，从而减少了数据编码量，节省了计算资源和网络传输资源；当图像帧序列中图像变化慢时，此时用户对图像质量要求较高，因此采用编码率较高的编码规则进行处理，从而满足用户对于图像帧清晰度的要求。本公开所提供的方法不仅保证了图像帧显示具有较高的清晰度的同时，减少了图像编码过程中的数据编码量，节省了计算资源和网络传输资源。
基于上述图1对应的实施例中所描述的数据编码方法，本公开实施例还提供一种计算机可读存储介质，例如，非临时性计算机可读存储介质可以是只读存储器(英文：Read Only Memory，ROM)、随机存取存储器(英文：Random Access Memory，RAM)、CD-ROM、磁带、软盘和光数据存储装置等。该存储介质上存储有计算机指令，用于执行上述图1对应的实施例中所 描述的数据编码方法，此处不再赘述。
本领域技术人员在考虑说明书及实践这里公开的公开后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。

Claims (10)

  1. 一种数据编码方法，其特征在于，所述方法包括：
    获取目标图像帧序列，所述目标图像帧序列是根据终端设备预设时间段内的显示画面生成；
    根据预设算法，获取所述目标图像帧序列对应的变化频率，所述变化频率是指所述图像帧序列中图像帧之间的变化频率；
    当所述变化频率大于预设值时，根据第一编码规则对所述目标图像帧序列进行编码处理，所述第一编码规则对应的编码率低于预设编码规则对应的编码率。
  2. 根据权利要求1所述的方法，其特征在于，所述获取所述目标图像帧序列对应的变化频率，包括：
    逐帧对比所述图像帧序列中当前图像帧与所述当前图像帧对应的下一帧图像帧，获取所述图像帧序列中图像帧的变化个数；
    根据所述变化个数，获取所述目标图像帧序列对应的变化频率。
  3. 根据权利要求1所述的方法，其特征在于，所述获取所述目标图像帧序列对应的变化频率，包括：
    获取目标指令信息，所述目标指令信息是所述终端设备处理所述目标图像帧序列中图像帧时生成的指令信息；
    解析所述目标指令信息，根据解析结果，确定所述目标指令信息中是否包括文字处理指令；
    当所述目标指令信息中包括文字处理指令时，获取所述文字处理指令的产生频率；
    根据所述文字处理指令的产生频率，获取所述目标图像帧序列对应的变化频率。
  4. 根据权利要求1所述的方法，其特征在于，所述根据第一编码规则对所述目标图像帧序列进行编码处理，包括：
    通过对所述图像帧序列中每一图像帧对应的像素点取值范围进行压缩处理，对所述目标图像帧序列进行编码处理；
    或者，对所述图像帧序列中每个图像帧进行频域变换处理后，通过对所述频率低于预设值的所述图像帧进行编码处理，对于频率高于或者等于预设值的所述图像帧不进行编码处理，对所述目标图像帧序列进行编码处理。
  5. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    当所述变化频率小于或者等于预设值时，根据第二编码规则对所述目标图像帧序进行编码处理，所述第二编码规则对应的编码率大于所述第一编码规则对应的编码率。
  6. 一种数据编码装置，其特征在于，包括：接收器和处理器，
    所述接收器与所述处理器相连接；
    所述接收器，用于获取目标图像帧序列，所述目标图像帧序列是根据终端设备预设时间段内的显示画面生成；
    所述处理器，用于根据预设算法，获取所述目标图像帧序列对应的变化频率，所述变化频率是指所述图像帧序列中图像帧之间的变化频率；
    当所述变化频率大于预设值时，根据第一编码规则对所述目标图像帧序列进行编码处理，所述第一编码规则对应的编码率低于预设编码规则对应的编码率。
  7. 根据权利要求6所述的装置，其特征在于，所述处理器还用于，
    逐帧对比所述图像帧序列中当前图像帧与所述当前图像帧对应的下一帧图像帧，获取所述图像帧序列中图像帧的变化个数；
    根据所述变化个数，获取所述目标图像帧序列对应的变化频率。
  8. 根据权利要求7所述的装置，其特征在于，所述处理器还用于，
    获取目标指令信息，所述目标指令信息是所述终端设备处理所述目标图像帧序列中图像帧时生成的指令信息；
    解析所述目标指令信息，根据解析结果，确定所述目标指令信息中是否包括文字处理指令；
    当所述目标指令信息中包括文字处理指令时，获取所述文字处理指令的产生频率；
    根据所述文字处理指令的产生频率，获取所述目标图像帧序列对应的变化频率。
  9. 根据权利要求7所述的装置，其特征在于，所述处理器还用于，
    通过对所述图像帧序列中每一图像帧对应的像素点取值范围进行压缩处理，对所述目标图像帧序列进行编码处理；
    或，对所述图像帧序列中每个图像帧进行频域变换处理后，通过对所述频率低于预设值的所述图像帧进行编码处理，对于频率高于或者等于预设值的所述图像帧不进行编码处理，对所述目标图像帧序列进行编码处理。
  10. 根据权利要求6所述的装置，其特征在于，所述处理器还用于，
    当所述图像数据的变化频率小于或者等于预设值，根据第二编码规则对所述目标图像帧序进行编码处理，所述第二编码规则对应的编码率大于所述第一编码规则对应的编码率。
PCT/CN2020/086315 2019-09-09 2020-04-23 数据编码方法及装置 WO2021047177A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910849181.8A CN110740316A (zh) 2019-09-09 2019-09-09 数据编码方法及装置
CN201910849181.8 2019-09-09

Publications (1)

Publication Number Publication Date
WO2021047177A1 true WO2021047177A1 (zh) 2021-03-18

Family

ID=69267840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/086315 WO2021047177A1 (zh) 2019-09-09 2020-04-23 数据编码方法及装置

Country Status (2)

Country Link
CN (1) CN110740316A (zh)
WO (1) WO2021047177A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110740316A (zh) * 2019-09-09 2020-01-31 西安万像电子科技有限公司 数据编码方法及装置
CN111447450A (zh) * 2020-03-16 2020-07-24 西安万像电子科技有限公司 数据处理方法及设备
CN114598893B (zh) * 2020-11-19 2024-04-30 京东方科技集团股份有限公司 文字的视频实现方法及系统、电子设备、存储介质

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05130587A (ja) * 1991-10-31 1993-05-25 Nec Corp 画像符号化装置のバツフアメモリ制御回路
US5592225A (en) * 1993-09-30 1997-01-07 Matsushita Electric Industrial Co., Ltd. Device and method for controlling coding
CN101389014A (zh) * 2007-09-14 2009-03-18 浙江大学 一种基于区域的分辨率可变的视频编解码方法
CN102710949A (zh) * 2012-05-11 2012-10-03 宁波大学 一种基于视觉感知的立体视频编码方法
CN103297773A (zh) * 2013-05-07 2013-09-11 福州大学 基于jnd模型的图像编码方法
CN106375841A (zh) * 2015-07-23 2017-02-01 阿里巴巴集团控股有限公司 无线投屏数据处理、视频数据显示方法、装置及电子设备
CN107172376A (zh) * 2017-06-26 2017-09-15 北京奇艺世纪科技有限公司 一种基于屏幕共享的视频编码方法和装置
CN109561310A (zh) * 2017-09-26 2019-04-02 腾讯科技（深圳）有限公司 视频编码处理方法、装置、设备和存储介质
CN110139112A (zh) * 2019-04-29 2019-08-16 暨南大学 一种基于jnd模型的视频编码方法
CN110740316A (zh) * 2019-09-09 2020-01-31 西安万像电子科技有限公司 数据编码方法及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9723315B2 (en) * 2011-07-01 2017-08-01 Apple Inc. Frame encoding selection based on frame similarities and visual quality and interests
CN103412701B (zh) * 2012-11-01 2016-08-31 华为技术有限公司 远程桌面图像处理方法及装置
US10715577B2 (en) * 2014-09-09 2020-07-14 Vmware, Inc. Virtual desktop encoding based on user input behavior
US10244234B2 (en) * 2015-11-20 2019-03-26 Ellation, Inc. Adaptive compression rate control
CN106227477A (zh) * 2016-07-08 2016-12-14 中霆云计算科技（上海）有限公司 一种用于远程桌面协议的无损有损自动切换方法
CN107666610A (zh) * 2017-09-25 2018-02-06 北京小鱼易连科技有限公司 桌面视频内容分析方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05130587A (ja) * 1991-10-31 1993-05-25 Nec Corp 画像符号化装置のバツフアメモリ制御回路
US5592225A (en) * 1993-09-30 1997-01-07 Matsushita Electric Industrial Co., Ltd. Device and method for controlling coding
CN101389014A (zh) * 2007-09-14 2009-03-18 浙江大学 一种基于区域的分辨率可变的视频编解码方法
CN102710949A (zh) * 2012-05-11 2012-10-03 宁波大学 一种基于视觉感知的立体视频编码方法
CN103297773A (zh) * 2013-05-07 2013-09-11 福州大学 基于jnd模型的图像编码方法
CN106375841A (zh) * 2015-07-23 2017-02-01 阿里巴巴集团控股有限公司 无线投屏数据处理、视频数据显示方法、装置及电子设备
CN107172376A (zh) * 2017-06-26 2017-09-15 北京奇艺世纪科技有限公司 一种基于屏幕共享的视频编码方法和装置
CN109561310A (zh) * 2017-09-26 2019-04-02 腾讯科技（深圳）有限公司 视频编码处理方法、装置、设备和存储介质
CN110139112A (zh) * 2019-04-29 2019-08-16 暨南大学 一种基于jnd模型的视频编码方法
CN110740316A (zh) * 2019-09-09 2020-01-31 西安万像电子科技有限公司 数据编码方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
XIAOWEN WEI, XULI SHI, ZIWU ZHAO: "Bit-Rate Compression Method Based on Visual Redundancy Model", DIANSHI-JISHU: YUEKAN - VIDEO ENGINEERING, BEIJING DIANSHI DIANSHENG ZAZHISHE, CN, vol. 35, no. 9, 31 December 2011 (2011-12-31), CN, pages 16 - 19, XP055790076, ISSN: 1002-8692, DOI: 10.16280/j.videoe.2011.09.009 *

Also Published As

Publication number Publication date
CN110740316A (zh) 2020-01-31

Similar Documents

Publication Publication Date Title
WO2021047177A1 (zh) 数据编码方法及装置
WO2021068598A1 (zh) 共享屏幕的编码方法、装置、存储介质及电子设备
CN110072119B (zh) 一种基于深度学习网络的内容感知视频自适应传输方法
US11012742B2 (en) Video scrambling method and device with adaptive mode selection, network camera and readable storage medium
WO2023016155A1 (zh) 图像处理方法、装置、介质及电子设备
WO2018045789A1 (zh) 图像灰度值调整方法和装置
Wang et al. Perceptual screen content image quality assessment and compression
CN113068034B (zh) 视频编码方法及装置、编码器、设备、存储介质
WO2022095797A1 (zh) 图像的压缩方法、装置、智能终端及计算机可读存储介质
CN107820095B (zh) 一种长期参考图像选择方法及装置
WO2020244328A1 (zh) 图像处理方法及装置
CN108416725A (zh) 一种基于消除块效应的非对称jpeg隐写方法
WO2016033725A1 (zh) 视频编码中的块分割方式处理方法和相关装置
CN110378860B (zh) 修复视频的方法、装置、计算机设备和存储介质
CN103957420A (zh) 一种h.264运动估计编码的全面运动估计改进算法
CN112950491B (zh) 一种视频处理的方法及设备
Meng et al. A robust coverless video steganography based on maximum DC coefficients against video attacks
WO2023024832A1 (zh) 数据处理方法、装置、计算机设备和存储介质
CN116095341A (zh) 一种水印嵌入方法、装置、设备以及存储介质
CN109413445B (zh) 一种视频传输方法及装置
Fallahpour et al. Flexible image watermarking in JPEG domain
Chammem et al. Stereoscopic video watermarking: a comparative study
CN110401835B (zh) 图像处理方法及装置
CN107509074A (zh) 基于压缩感知的自适应3d视频编解码方法
CN112584151A (zh) 图像处理方法及终端设备、服务器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20863443

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20863443

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 20863443

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 18/10/2022)

122 Ep: pct application non-entry in european phase

Ref document number: 20863443

Country of ref document: EP

Kind code of ref document: A1