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Image storing method for compressing video frequency signal decode

A video signal and image storage technology, applied in the field of video decoding, can solve the problems of inability to realize the decoding function, waste of memory bandwidth resources, etc., and achieve the effect of improving the utilization rate

Inactive Publication Date: 2007-12-19
潮州市创佳电子有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the timing waste caused by newlines can account for up to 50% of the entire memory access process
Therefore, the linear storage method will lead to a serious waste of memory bandwidth resources, so that the correct decoding function cannot be realized, or a higher clock frequency and more expensive storage devices need to be used

Method used

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  • Image storing method for compressing video frequency signal decode
  • Image storing method for compressing video frequency signal decode
  • Image storing method for compressing video frequency signal decode

Examples

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Embodiment Construction

[0031] The image storage method for decoding compressed video signals proposed by the present invention includes: dividing the frame image in the video sequence into a plurality of pixel blocks, defining the pixel blocks as windows, and allocating storage space for each window, said Window is made up of a plurality of macroblocks, and each macroblock is the pixel block of 16*16, as shown in Figure 3; Write the macroblock that completes decoding, generate a plurality of writing addresses for described macroblock, described The write addresses of each point to different locations in the storage space allocated to the window where the macroblock is located; when the current decoded macroblock needs to read the reference macroblock, multiple read addresses are generated, and the reference macro is read according to the read address piece.

[0032] The reference macroblock may span multiple windows, and each of the read addresses points to different locations in the storage space a...

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Abstract

The method includes following steps: the frame image in video sequence is divided into multi pixel blocks that are defined as current pixel window; the memory is allocated for each window; the above window is composed of multi macro blocks, each macro block is 16X16 pixel block; the macro block completing decode is written in, and multi written-in addresses are generated for the above macro block; the each of written in addresses points a different location in memory allocated for the above macro block; when current decoding macro block needs to read out the reference macro block, multi read-out addresses are generated, the reference macro block is read out according to the read-out addresses.

Description

technical field [0001] The invention relates to an image storage method for decoding compressed video signals, belonging to the technical field of video decoding. Background technique [0002] The MPEG (Moving Picture Experts Group)-2 video compression standard has been vigorously developed and widely used in recent years because it can provide high compression ratio and high-quality images under the premise of moderate computational complexity. The compression ability of the MPEG-2 standard for moving images is largely due to the motion estimation algorithm it adopts, that is, the 16×16 pixel block is defined as a macroblock (MB), and the video frame sequence is Select some frame images as reference frames, and completely encode the pixel data of these reference frames in units of macroblocks; while encoding other non-reference frames, they also encode in units of macroblocks. When encoding, first find out the current The most similar part of the macroblock in the referenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/917H04N7/26H04N19/119H04N19/176
Inventor 赵强杨华中汪蕙苏植丰
Owner 潮州市创佳电子有限公司