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Image compression method

A technology of image compression and compression unit, which is applied in the field of video coding and decoding, and can solve problems such as low bandwidth utilization, large reference image data, and large amount of read and write data

Active Publication Date: 2019-11-15
ZHUHAI JIELI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In traditional technology, when encoding video, the encoder compresses the reference image data, but the compressed reference image data is still relatively large, resulting in a large amount of read and write data during the encoding process and low bandwidth utilization.

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Embodiment Construction

[0060] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0061] The image compression method provided by this application can be applied to such as figure 1 shown in the application environment. Wherein, the computer device 100 compresses the image to be compressed to obtain compressed data, where the computer device 100 may be, but not limited to, various personal computers, notebook computers, smart phones and tablet computers.

[0062] In one embodiment, such as figure 2 As shown, an image compression method is provided, which is applied to figure 1 The computer equipment in , as an example, includes:

[0063] S101. Div...

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Abstract

The invention relates to an image compression method. Computer equipment divides an image to be compressed into a plurality of compression units; wherein each compression unit comprises at least two sub-blocks; then, on the basis of a preset compressed data format, compressed data of each compression unit is obtained; wherein the compressed data comprises a reference pixel value of the compressionunit, first pixel associated data, second pixel associated data, a sub-block position where the reference pixel value of the compression unit is located, and a pixel position where the reference pixel value of each sub-block is located; wherein the first pixel associated data is used for representing the compression unit and the pixel relationship of each sub-block in the compression unit, and the second pixel associated data is used for representing the pixel relationship in each sub-block. By adoption of the method, the compression ratio of compressing the to-be-compressed image can be improved, the bandwidth utilization efficiency is improved, and the time delay of compressed data reading is reduced; and information distortion caused by compression of the to-be-compressed image is avoided.

Description

technical field [0001] The present application relates to the technical field of video coding and decoding, in particular to an image compression method. Background technique [0002] With the development and popularization of high-definition video, video codec technology is facing severe challenges. Video decoding is a process of decompressing digital video. Among them, H.264 video coding and decoding is a very popular standard algorithm. This technology has a high compression ratio and has been widely used. In the H.264 encoding process, reference images need to be used for motion estimation and motion compensation, so a large number of read and write operations will be performed on the reference images. [0003] In traditional technology, when encoding video, the encoder compresses the reference image data, but the compressed reference image data is still relatively large, resulting in a large amount of read and write data during the encoding process and low bandwidth ut...

Claims

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Application Information

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IPC IPC(8): H04N19/176H04N19/182H04N19/85
CPCH04N19/176H04N19/182H04N19/85
Inventor 黄雄科郝鑫赵光东
Owner ZHUHAI JIELI TECH
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