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

Image noise reduction method and device

A noise reduction, image technology, applied in the field of image processing, can solve the problem of loss of image details

Active Publication Date: 2022-03-29
BEIJING LUSTER LIGHTTECH
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides an image noise reduction method and device, which can be used to solve the technical problem that the noise reduction processing method in the prior art easily leads to the loss of image details in bright areas of the image

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
  • Image noise reduction method and device
  • Image noise reduction method and device
  • Image noise reduction method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0061] Considering that when an image is captured, if there are both bright areas and dark areas in the captured scene, it is easy to be unable to easily distinguish the image information of the dark area in the captured image. In this case, in the prior art, some image processing algorithms (such as brightness enhancement algorithm, Retinex algorithm, etc.) can usually be compared, in order to be able to see the information of the dark area from the captured image. After the image processing algorithm is enhanced, although the brightness of the dark area of ​​the captured image is improved, the dark area is also prone to noise. However, because the brightness of the bright area itself is relatively large, even after the enhancem...

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 present application provides an image noise reduction method and device. The method includes: after acquiring the image to be denoised, selecting a plurality of image regions from the image to be denoised, and further, for each image region, if it is determined that the brightness value of the image region is less than a first threshold, and the If the roughness value of the image area is smaller than the second threshold, the image area is subjected to noise reduction processing. In this way, the embodiment of the present application will only perform noise reduction processing on image regions whose luminance value is smaller than the first threshold and roughness value is smaller than the second threshold value, that is, only flat and dark image regions will be subjected to noise reduction processing, so that both The image details in the bright image area can reduce the noise in the dark image area. At the same time, since the embodiment of the present application does not perform noise reduction processing on the rough dark image area, it can also retain the dark image area. Image details.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to an image noise reduction method and device. Background technique [0002] In the process of image acquisition and transmission, noise will be introduced due to various factors. Noise not only affects the visual effect of the image, but also brings difficulties to the later image analysis and processing. [0003] In order to improve the visual effect of the image, the image is usually denoised, highlighting the interesting part of the image, enhancing the useful information in the image, weakening or removing the unnecessary information, so that the useful information is strengthened, so as to obtain a A more practical image or converted into an image that is more suitable for human or machine analysis and processing. However, due to the different incident angles of light, there may be areas with different brightness and darkness in an image. If the image is d...

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
CPCG06T2207/10024G06T5/70
Inventor 郭慧姚毅
Owner BEIJING LUSTER LIGHTTECH