Loop wave filtering method and device and mobile multi-medium terminal chip

A technology of loop filtering and filtering intensity, which is applied in the field of video communication, can solve problems such as resource consumption, high system resource requirements, and complexity, and achieve the effect of reducing the number, reducing requirements, and reducing system resource requirements

CN101651829AInactive Publication Date: 2010-02-17WUXI ZGMICRO ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2010-02-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides loop wave filtering method and device, wherein the method comprises the following steps: a. acquiring a macro block which needs loop wave filtering; b. detecting the sub-block mode of the current macro block and extracting the wave filtering intensities of the edges of a corresponding sub-block; setting the wave filtering intensity of the internal edge of the sub-block intozero; and c. carry out wave filtering on the current macro block according to the acquired wave filtering intensities of different edges. The invention improves the extraction process of wave filtering intensity, and reduces requirements of a loop wave filtering process on system resources; therefore, on the premise of ensuring the subjective effect and the objective quality of code images, the invention simplifies the loop wave filtering process and reduces the requirements of the process on the system resources.
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Description

technical field

[0001] The invention relates to the technical field of video communication, in particular to a method and device for loop filtering and a video decoding chip for a mobile multimedia terminal. Background technique

[0002] With the development of science and technology, the progress of society, and the continuous improvement of people's living standards, people's diversified needs for information consumption have become increasingly obvious. Traditional analog information mobile TV and analog audio broadcasting have been increasingly unable to meet the needs of the public. Digital mobile multimedia has become increasingly widely used by the public. Digital mobile multimedia provides digital audio, video and information services to various portable terminal devices through the wireless broadcasting and TV coverage network. Its terminal products mainly include MP4, mobile phones, GPS, USB receiving sticks, independent receivers, etc.

[0003] As we all know, th...

Examples

Embodiment Construction

[0040] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] refer to figure 1 , which shows an embodiment of a loop filtering method of the present invention, which may specifically include:

[0042] Step 101, acquiring macroblocks that need to be loop filtered;

[0043] Usually, when the decoding of the current frame is completed, it is necessary to perform loop filtering on the entire image of the current frame image in units of 4x4 blocks, and output (display) or store (used as a reference for the next frame decoding) the filtered image ). Wherein, the usual loop filtering is based on a macroblock as a unit, so it is necessary to obtain the macroblock to be loop filtered first.

[0044] Step 102, detecting the blocking mode of the current macroblock, and extracting the filter ...