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Methods and devices for denoising in video coding and decoding,

A video coding and noise reduction processing technology, applied in the field of video coding and decoding, can solve the problems of weakening the spatial correlation and temporal correlation of video images, inaccurate block matching results, unfavorable video compression, etc., so as to facilitate video compression and ensure space Effects of correlation and time correlation, noise component reduction

Active Publication Date: 2010-06-16
VIMICRO ELECTRONICS CORP +1
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Problems solved by technology

[0009] It can be seen from the above process that only loop filtering involves denoising processing in the encoding and decoding process, but this denoising process is only used to remove the noise introduced in the encoding and decoding loop, and only the Boundary filtering
However, in many cases in practical applications, especially in video surveillance scenarios, due to various reasons, such as insufficient light, etc., when collecting video images, the video images will contain a lot of noise, which can be analyzed from the spectral distribution Generally, the scope is wide and there is no fixed rule
The existence of noise will weaken the spatial correlation and temporal correlation of the video image, making the block matching result in the motion estimation process inaccurate, and it will also make the residual error contain a lot of noise components, which is not conducive to video compression

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  • Methods and devices for denoising in video coding and decoding,
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  • Methods and devices for denoising in video coding and decoding,

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Embodiment Construction

[0055] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings.

[0056] image 3 It is a frame diagram of a video coding noise reduction process based on the H.264 / AVC (MPEG4-Part10) standard in an embodiment of the present invention. Such as image 3 As shown, in the embodiment of the present invention, a noise reduction processing link is added in the video encoding process, and the noise reduction processing link is set after the loop filtering link, and may also be set before the loop filtering link in actual implementation. In addition, for a video encoding process that does not include loop filtering, the noise reduction process only needs to be set after the image is reconstructed. The noise reduction processing link is used to perform full-pixel noise reduction processing on the reconstructed image of ...

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Abstract

The invention discloses methods and devices for denoising in video coding and decoding. The method for denoising in video coding comprises the following steps of: in the process of video coding, performing full pixel denoising treatment on a reconstructed picture of the current coding picture; and taking the denoised and reconstructed picture as a reference picture of other coding pictures. The method for denoising in video decoding comprises the following steps of: in the process of video decoding, performing the full pixel denoising treatment on the reconstructed picture of the current decoding picture; and taking the denoised reconstructed picture as the reference picture of other decoding pictures and the final reconstructed picture. The technical scheme disclosed by invention can suppress noises in the acquired video pictures, and improve the precision of a block matching result in the process of motion estimation.

Description

technical field [0001] The present invention relates to video coding and decoding technology, in particular to a video coding noise reduction method in a noisy environment, a video decoding noise reduction method, a video coding noise reduction device, and a video decoding noise reduction device. Background technique [0002] Video coding technology is to compress digital video information so that it can be transmitted and stored more effectively; video decoding technology is to analyze and reconstruct encoded video information to obtain video images. [0003] At present, video compression coding standards are mainly formulated by the Moving Picture Experts Group (MPEG), ITU-T SG16Q6 Video Coding Experts Group (VCEG) and the VCEG-MPEG Joint Expert Group (JVT). These standards include: H.263, MPEG2, MPEG4 -Part2 and the latest H.264 / AVC (MPEG4-Part10). Other video coding standards include VC-1 and the video coding standard AVS1.0-P2 formulated by the China Audio Video Standa...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N19/182
Inventor 王浩邱嵩
Owner VIMICRO ELECTRONICS CORP
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