Title :
A post-compensation scheme for Nonlocal Means filter based image restoration
Author :
Xu, Hao ; Xu, Jizheng ; Wu, Feng
Author_Institution :
Dept. Electron. Eng. & Inf. Sci., Univ. of Sci. & Tech. of China, Hefei
Abstract :
Recent nonlocal means filter (NLM) [1] is lack of mean conservation property, that is, image can have different mean before and after being processed. It is not suppose to happen when dealing with zero-mean noise. In this paper, a compensation procedure is proposed as post-process of NLM. The constraint of mean conservation is imposed on NLM through adding to the restored image of NLM with a compensation image. The compensation image is obtained via processing the method noise of NLM. Experiments show that the compensation procedure is able to significantly improve the performance of NLM.
Keywords :
compensation; filtering theory; image denoising; image restoration; compensation image; image processing; image restoration; mean conservation; nonlocal means filter; post-compensation scheme; zero-mean noise; AWGN; Additive white noise; Asia; Gaussian noise; Image restoration; Information filtering; Information filters; Information science; Internet; Noise reduction; Nonlocal Means filter; image restoration; mean conservation;
Conference_Titel :
Image Processing, 2008. ICIP 2008. 15th IEEE International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-1765-0
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2008.4711812
