UM  > 科技學院
Color Image Noise Covariance Estimation with Cross-Channel Image Noise Modeling
Li Dong1; Jiantao Zhou1; Tao Dai2
2018
Conference Name2018 IEEE International Conference on Multimedia and Expo (ICME)
Source Publicationproceeding of 2018 IEEE International Conference on Multimedia and Expo (ICME)
Conference Date23-27 July 2018
Conference PlaceSan Diego, CA, USA
Abstract

Noise estimation is crucial in many image processing tasks such as denoising. Most of the existing noise estimation methods are specially developed for grayscale images. For color images, these methods simply handle each color channel independently, without considering the correlation across channels. In this work, we propose a multivariate Gaussian approach to model the noise in color images, in which we explicitly consider the inter-dependence among color channels. We design a practical method for estimating the noise covariance matrix within the proposed model. Specifically, a patch selection scheme is first introduced to select weakly textured patches through thresholding the texture strength indicators. Noticing that the patch selection actually depends on the unknown noise covariance, we present an iterative noise covariance estimation algorithm, where the patch selection and the covariance estimation are conducted alternately. Experimental results show that our method can effectively estimate the noise covariance. The practical usage is demonstrated with color image denoising.

KeywordNoise Covariance Estimation Weakly Textured Patch Color Image Denoising
DOIhttp://doi.org/10.1109/ICME.2018.8486558
Language英语
Fulltext Access
Citation statistics
Document TypeConference paper
CollectionFaculty of Science and Technology
DEPARTMENT OF COMPUTER AND INFORMATION SCIENCE
Affiliation1.Department of Computer and Information Science, University of Macau, China
2.Graduate School at Shenzhen, Tsinghua University, Shenzhen, Guangdong, China
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Li Dong,Jiantao Zhou,Tao Dai. Color Image Noise Covariance Estimation with Cross-Channel Image Noise Modeling[C],2018.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li Dong]'s Articles
[Jiantao Zhou]'s Articles
[Tao Dai]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li Dong]'s Articles
[Jiantao Zhou]'s Articles
[Tao Dai]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li Dong]'s Articles
[Jiantao Zhou]'s Articles
[Tao Dai]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.