Video denoising method and device

A video and position-corresponding technology, which is applied in the direction of TV, color TV, color TV parts, etc., can solve the problems of uneven denoising effect of front and back adjacent frames, poor video display effect, affecting visual effect, etc., and achieve easy real-time Performance requirements, meet real-time requirements, and improve the effect of visual effects

Inactive Publication Date: 2017-08-29
GUANGDONG VTRON TECH CO LTD
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Problems solved by technology

[0002] When video shooting or video monitoring is performed in low-brightness scenes, more noise is often introduced during the video imaging process, which affects the visual effect
Most of the traditional image denoising techniques are aimed at a single image. If applied to video denoising, the denoising effect of adjacent frames is often uneven, making the video display effect poor. , while the same location in the next frame is darker, especially in static areas of the video
Moreover, the single image denoising technology is generally technically complex, and the image denoising speed is slow, which is difficult to meet the real-time requirements

Method used

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  • Video denoising method and device
  • Video denoising method and device

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Embodiment Construction

[0023] The specific implementation manner of the video denoising method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 Shown, a kind of video denoising method comprises steps:

[0025] S110. Determine a reference area corresponding to a position in a reference frame image according to the selected current area of ​​the current frame image, wherein the reference frame image includes the current frame image;

[0026] The current frame image is the image to be denoised, and the reference frame image includes the current frame image and other adjacent frame images;

[0027] combine figure 2 As shown, assuming F k is the current frame image, then the reference frame can contain F k Adjacent frames on one side, such as F k , F k-1 ,...,F 0 etc. can also contain F k Adjacent frames on both sides, such as F k , F k-1 , F k+1 、…F 0 , F N-1 etc., wherein the number of frames included in th...

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Abstract

A video denoising method and device, which divides each frame image read into the buffer into blocks, determines the reference area of ​​the reference frame image according to the selected current area of ​​the current image to be denoised, and then determines the distance between the reference area and the current area Euclidean distance and weight value, use the weighted filtering method to obtain the area after filtering and denoising. The present invention uses the weighted average method of local positions between adjacent frames to denoise the noisy video, which can obtain a better denoising effect, thereby improving the visual effect of the video; the image denoising speed is fast, and it is easy to meet the real-time requirements .

Description

technical field [0001] The present invention relates to the technical field of video image processing, in particular to a video denoising method and device. Background technique [0002] When video shooting or video monitoring is performed in a low-brightness scene, more noise is often introduced during the imaging process of the video, which affects the visual effect. Most of the traditional image denoising techniques are aimed at a single image. If applied to video denoising, the denoising effect of adjacent frames is often uneven, making the video display effect poor. , while the same location in the next frame is darker, which is especially noticeable in static areas in the video. Moreover, the single image denoising technology is generally technically complicated, and the image denoising speed is slow, so it is difficult to meet the real-time requirements. Contents of the invention [0003] Based on this, it is necessary to provide a video denoising method and devic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/217H04N5/21
Inventor 甄海华
Owner GUANGDONG VTRON TECH CO LTD
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