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Video image data encoding method, device and computer readable medium

A video image and video coding technology, which is applied in image communication, digital video signal modification, electrical components, etc., can solve the problem that the video coding format is not easy to apply to parallel processing.

Active Publication Date: 2021-04-23
ARM LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, because the encoding is sequential in nature, that is, each block in the block sequence requires the previous block (especially the QP value of the previous block) to be encoded and thus relies on this to encode itself, the data block A video coding format that encodes quantization parameter (QP) values ​​relative to those values ​​of previous data blocks (usually in raster scan order) is not easily amenable to such parallel processing

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  • Video image data encoding method, device and computer readable medium
  • Video image data encoding method, device and computer readable medium
  • Video image data encoding method, device and computer readable medium

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Embodiment Construction

[0178] The embodiments described herein with reference to the accompanying drawings are exemplary implementations of the invention in which uncoded blocks of pixel data are coded according to one of the MPEG video coding formats, such as H.264, and in which the The coding parameter for is the quantization parameter (QP).

[0179] figure 1 A sequence of encoded pixel blocks is schematically illustrated. The first pixel block in the sequence is coded independently, and its coding parameter value (e.g., in this case, the quantization parameter QP) is coded in this data block (in this case, in terms of absolute values, although this is not is required). However, the following pixel blocks are coded with reference to the previous pixel blocks, wherein the QP value for each pixel block is coded as a relative value with reference to the value of the previous block. An entire frame (or a portion thereof) of video image data can be encoded as a sequence in which the order of the blo...

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Abstract

Video image data encoding method, device and computer readable medium. The invention facilitates the parallel encoding of two sets of data blocks of the data block sequence (1) and also facilitates the use of compliant encoding between the data block sequences (1). This is achieved by assigning pairs of blocks of the first group of data blocks and blocks of the second group of data to individual encoding units, and determining encoding parameter values ​​to be used for encoding the first block of the respective second group of data blocks ( 30). In order to correctly reconstruct the image, ensure that the blocks belonging to the first block of a pair of block groups are encoded with encoding parameter values ​​that cause the decoder to The determined encoding parameter values ​​are used for decoding (30).

Description

technical field [0001] The present invention relates to video data processing. More specifically, the present invention relates to methods and apparatus for encoding video image data. Background technique [0002] In the prior art, it is known that video image data (such as RGB or YUV values) can be coded according to a predetermined video coding format (such as the format defined by the Moving Picture Experts Group (generally referred to as MPEG format)). Video encoding formats such as MPEG enable substantial reductions in the file size of video image data without significant visible loss in image quality. [0003] It is known in the prior art that, generally, when encoding video data, each video frame is divided into a plurality of pixel blocks of the frame (for example, in the case of MPEG encoding, 16×16 pixel blocks), and Each block is encoded separately. [0004] In video coding standards such as MPEG, H.264, etc., it is usually relative to previously coded data (su...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/102H04N19/17
CPCH04N19/176H04N19/463H04N19/132H04N19/124H04N19/196H04N19/174H04N19/184H04N19/436
Inventor R·多芬格T·尼贝里
Owner ARM LTD