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Video processing method and device

A video processing and video technology, applied in the computer field, can solve problems such as inability to denoise video, achieve excellent denoising effect, and improve compression ratio and compression quality.

Inactive Publication Date: 2018-01-30
ALIBABA GRP HLDG LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this application is to provide a method and device for video processing, which can solve the problem that the existing solutions cannot accurately denoise the video

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  • Video processing method and device

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Embodiment Construction

[0086] The application will be described in further detail below in conjunction with the accompanying drawings.

[0087] figure 1 It shows a schematic flow chart of a video processing method according to one aspect of the present application; the method includes step S11 and step S12, wherein, in step S11, the noise of the input video is estimated to obtain the noise level of the input video information; in step S12, select a corresponding denoising scheme to process the input video according to the noise level information.

[0088] A video processing method described in the present application obtains noise level information by performing noise estimation on an input video, and flexibly selects a corresponding denoising scheme based on the noise level information to process the input video. In addition, in the denoising scheme Multiple denoising algorithms can be combined to obtain excellent denoising effects. In a preferred embodiment, as figure 2 as shown, figure 2 It...

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Abstract

The invention aims to provide a video processing method and device. Through estimating the noise of an input video, the noise level information of the input video can be obtained. Based on the noise level information, the corresponding denoising plan is selected to conduct processing on the input video. The denoising plan can combine a plurality of denoising algorithms and obtain excellent denoising effect, and improve the compression ratio of the noise video and the compression quality. Furthermore, a noise estimation algorithm with more robustness is provided through obtaining the original image data of each frame of the input video and the corresponding filtering processing image data. Based on the statistic information of the original image data of each frame and the corresponding filtering processing image data, the noise estimation information of the corresponding frame can be determined. Accordingly, it can be distinguished whether the high-frequency energy is the signal itselfor the noise, and the high-frequency energy can be extracted, and thereby the noise estimation can be more accurate.

Description

technical field [0001] This application relates to the computer field, and in particular to a video processing technology. Background technique [0002] In video coding processing, noise processing has always been a very challenging direction. There are many sources of video noise, including thermal noise in the video capture process, coding noise in video coding, and some processing in video enhancement processing. noise etc. Video noise will reduce the viewing experience of video images, increase the difficulty of video compression, reduce the compression ratio and affect the accuracy of video detection algorithms. Therefore, denoising is necessary for encoding videos with significant noise. There are many existing denoising algorithms, such as bilateral filter, non-local mean filter, guided filter, three-dimensional block matching (BM3D), four-dimensional block matching (BM4D), etc. , they have been widely used in their respective fields of application. [0003] Howev...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/21H04N19/117
CPCG06T2207/10016G06T2207/20182G06T5/002G06T5/20
Inventor 梅大为江文斐泮利
Owner ALIBABA GRP HLDG LTD
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