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Video noise reduction encoding method and video noise reduction encoding device

A technology of video noise reduction and coding method, 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, and no fixed rules, so as to facilitate video compression and ensure space. Correlation and temporal correlation, the effect of improving the accuracy of the results

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

[0008] 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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  • Video noise reduction encoding method and video noise reduction encoding device
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  • Video noise reduction encoding method and video noise reduction encoding device

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[0035] 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.

[0036] figure 2 It is a frame diagram of the video noise reduction encoding process based on the H.264 / AVC (MPEG4-Part10) standard in the embodiment of the present invention. Such as figure 2 As shown, in the embodiment of the present invention, a noise reduction processing link is added before the video encoding process. The noise reduction processing link is used to perform full-pixel noise reduction processing on the current image to be encoded. Afterwards, a subsequent video encoding process is performed on the current image to be encoded after the noise reduction process.

[0037]During specific implementation, the full-pixel noise reduction processing may be intra-frame full-pixel noise reduction processing, or inter-frame full-pixel noi...

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Abstract

The invention discloses a video noise reduction encoding method and a video noise reduction encoding. The video noise reduction encoding method comprises the following steps of: before video encoding, performing full-pixel noise reduction processing on a reconstructed image of a current image to be encoded; and performing video encoding on the current image to be encoded after the noise reductionprocessing. In the technical scheme disclosed by the invention, the noise in an acquired video image can be restrained, the accuracy of a block matching result in a motion estimation process is improved and the compression code rate is saved.

Description

technical field [0001] The present invention relates to video coding and decoding technology, in particular to a video noise reduction coding method and a video noise reduction coding device in a noise environment. 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 Standards Group (AVS). The above-mentioned video coding standards all adopt a hybrid cod...

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Application Information

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IPC IPC(8): H04N7/26H04N19/103H04N19/124H04N19/13H04N19/51H04N19/593H04N19/61H04N19/82H04N19/88
Inventor 王浩邱嵩俞青
Owner VIMICRO ELECTRONICS CORP
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