Noise suppression method and device

A noise suppression and noise technology, applied in the field of noise suppression methods and devices, can solve the problems of loss of image detail denoising methods, large amount of calculation, blurred images, etc., achieve effective noise suppression processing, simple calculation method, and ensure clarity Effect

Active Publication Date: 2018-01-26
SPREADTRUM COMM (SHANGHAI) CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention solves the problem that when removing color noise from an image, it is easy to cause image blurring, loss of image details, complex denoising method, and large amount of computation

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 suppression method and device
  • Noise suppression method and device
  • Noise suppression method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050]In order to improve image quality, it is necessary to suppress image noise. Generally, various low-pass filters can be used to realize the denoising function of the image, but in the process of using the low-pass filter to denoise, a certain algorithm template needs to be used. Due to the low spatial frequency of the color noise in the image, in order to effectively remove the color noise with a lower frequency, it is necessary to use a larger algorithm template than that used to remove the luminance noise, which will make the calculation amount of the denoising larger, and because With the use of large-scale algorithm templates, the blurring effect on the image caused by the characteristics of the low-pass filter will be more obvious, which seriously affects the imaging quality of the image.

[0051] In the prior art, when color noise is removed from an image, there are problems that the image is easily blurred, image details are lost, the denoising method is complex, a...

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

A noise suppression method and device for suppressing color noise in an image; the method includes: determining a target range for noise suppression in a chrominance component space based on a brightness component value of a pixel; the chrominance component The space is a plane coordinate space composed of the first chroma component and the second chroma component; according to the distance between the pixel corresponding to the position in the chroma component space and the target range, determine the corresponding The suppression coefficient of the pixel point; the first chroma component value and the second chroma component value of the pixel point are adjusted according to the suppression coefficient corresponding to the pixel point, so as to realize the suppression processing of the color noise of the pixel point. The method can adaptively remove the color noise in the image, the calculation method is simple, and the original picture details in the image can be preserved, the definition of the image picture can be guaranteed, and the imaging quality of the image can be improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a noise suppression method and device. Background technique [0002] Image denoising is a widely used technology in image processing. The purpose of image denoising is to improve the signal-to-noise ratio of the image and highlight the desired features of the image. [0003] In the process of shooting digital images, noise exists in all aspects of the shooting process. For example, images are easily affected by various factors during the process of acquisition and transmission, so that images collected by image sensors often contain noise. The presence of noise will degrade the imaging quality of the image. [0004] Because the noise signal and the image signal in the image containing noise are mixed together, the image has problems such as inconspicuous features and low definition. Therefore, it is usually necessary to denoise the image collected by the image sensor to...

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): G06T5/00
Inventor 彭晓峰张乐朱洪波牛海军王浩
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap