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Video image deblocking filter method and device

A video image, deblocking filtering technology, applied in image communication, digital video signal modification, television, etc.

Active Publication Date: 2012-11-28
ALLWINNER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method and device for deblocking filtering of video images, which are used to solve the problem of deblocking filtering for different standards and improve the processing speed of deblocking filtering

Method used

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  • Video image deblocking filter method and device
  • Video image deblocking filter method and device

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Embodiment Construction

[0055] The specific implementation manners of the video image deblocking filtering method and device of the present invention will be described below with reference to the accompanying drawings.

[0056] A video image deblocking filtering method provided by an embodiment of the present invention, the deblocking filtering method divides a video image frame into several 16×16 macroblocks, each macroblock is divided into 16 4×4 sub-blocks, Such as figure 1 As shown, it specifically includes the following steps:

[0057] Step A. When reading the pixel data of the current macroblock, read the pixel data of the current macroblock from the first memory and the second memory into the specified buffer group according to the instruction information described by the control vector;

[0058] Step B. When performing filtering of each sub-block in the current macroblock, determine the data interaction information describing the current filtering window and buffer set according to the instr...

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Abstract

The invention provides a video image deblocking filter method and a video image deblocking filter device. According to the method, a video or image frame is divided into a plurality of 16*16 macro blocks, and each macro block is divided into 16 4*4 subblocks. The method comprises the following steps of: reading the pixel data of the current macro blocks from a first storage device and a second storage device to a specified buffer group according to the instruction information described by a control vector when the pixel data of the current macro blocks is read; and executing operations of determining the number of corresponding subblocks, calculating the filter strength, determining the filter type, performing filtering operation processing and performing data write-back processing according to the instruction information described by the control vector in the process of executing filtering processing of each current subblock. The essence is that the universal filtering processing operation on different coding and decoding standards is executed according to the instruction information described by the universal control vector in a control table. According to the video image deblocking filter method and the video image deblocking filter device, standard deblocking filter processing can be performed on different videos, the universality is high, and the filtering speed is increased.

Description

technical field [0001] The invention relates to the technical field of digital image processing, in particular to a video image deblocking filtering method and device applied in video codec technology. Background technique [0002] In the prior art, high-definition video encoding and decoding processing puts forward unprecedented requirements for deblocking filtering processing. [0003] Deblocking filter processing is a very important link in all video encoding and decoding, and all video processing that pursues compression efficiency and quality will perform related processing. However, since different video standards have different calculation methods in the processing of deblocking filtering, it has become a typical sign of the difference between various video standards, and it also poses a challenge to the versatility of the deblocking filtering device; The complexity of processing a macroblock or a frame requires more time, which is obviously not conducive to the enco...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N19/117H04N19/176H04N19/86
Inventor 熊富贵谢成兴
Owner ALLWINNER TECH CO LTD
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