Unlock instant, AI-driven research and patent intelligence for your innovation.

Noise reduction method and device for image noise

An image noise and noise reduction technology, which is applied in the field of image noise noise reduction methods and devices, and can solve problems such as distortion, image degradation, and blurring.

Active Publication Date: 2019-12-27
BEIJING HUIMOR TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Distortion issues are especially noticeable when displaying on large-screen display devices
[0003] At present, there are many general-purpose noise reduction algorithms for reducing mosquito noise, but the image after noise reduction will introduce other quality degradation, such as blurring and other problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Noise reduction method and device for image noise
  • Noise reduction method and device for image noise
  • Noise reduction method and device for image noise

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0084] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted.

[0085] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a noise reduction method and device for image noise. The noise reduction method comprises the following steps of 1) determining a block threshold value and a dynamic range of ablock gray scale of a macro block in an image according to an input decoded image; 2) obtaining a binary index of a pixel value in the macro block according to a comparison result of the pixel valueof a pixel in the macro block and the block threshold value of the macro block; 3) determining a pixel to be filtered in the macro block according to the binary index of the pixel value in the macro block; and 4) carrying out filtering processing on the pixel to be filtered by adopting a preset filtering algorithm. According to the method and the device, the noise reduction effect of mosquito noise is improved, and the image display after noise reduction is clear.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to an image noise reduction method and device. Background technique [0002] The video content of many compressed sources, such as MPEG-2 / DVD, MPEG-4, H.263, H.264, VC-1, AVS and RMVB, etc. Various compression artifacts appear, including blocking or blocky noise, ringing or mosquito noise, etc. Distortion issues are especially noticeable when displayed on large-screen display devices. [0003] At present, there are many general-purpose noise reduction algorithms for reducing mosquito noise, but the image after noise reduction will introduce other quality degradation, such as blurring and other problems. Contents of the invention [0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a noise reduction method and device for mosquito noise that improves the noise reduction effect and the video display qual...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/86H04N19/80H04N19/176H04N19/117
CPCH04N19/117H04N19/176H04N19/80H04N19/86
Inventor 谢将相郭李军
Owner BEIJING HUIMOR TECH