- B. Goossens, H.Q. Luong, A. Pizurica, W. Philips, "An improved non-local means algorithm for image denoising," in 2008 International Workshop on Local and Non-Local Approximation in Image Processing (LNLA2008), Lausanne, Switzerland, Aug. 25-29 (invited paper)
The main author is Bart Goossens, Dept. TELIN-IPI-iMinds, Ghent University, Belgium.
The code for our paper was originally written in C++. Because certain parts of the code are difficult to share (certain external libraries), the entire code was ported to Matlab. As a result the ported code runs much much ... much slower. The code is distributed for educational purposes - hence the goal is readability and clarity rather than speed.
If you're experiencing unexpected results using this software, please check that you got the parameters "sigma" and "h" set right. When comparing PSNR results with the results reported in our paper, please make sure that you choose the same parameter values as in our paper (Section 6). If you're getting significantly different or very bad results, then it's most likely that I was too enthusiastic during code porting (which was in fact a rewrite). Let me know in that case.
If you are able to use some parts of this code for your own project(s), I would appreciate if you could let me know. If you use this code for your own publications, please properly cite the above reference.
|Download (.ZIP) [239 Kb]||Paper (.PDF) [2.5 Mb]||Back|
The package contains the following files:
|barbarabig.tif||Barbara test image|
|boundextension.m||Helper function for image boundary extension (written by Prof. J. Portilla)|
|psdnoise.m||Helper function for generating stationary correlated Gaussian noise with different presets.|
Please mail comments/suggestions/bugs to my email address (see about page).