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function [PSNR y_est] = BM3D(y z sigma profile print_to_screen)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% BM3D is an algorithm for attenuation of additive white Gaussian noise from
% grayscale images. This algorithm reproduces the results from the article:
%
% [1] K. Dabov A. Foi V. Katkovnik and K. Egiazarian “Image Denoising
% by Sparse 3D Transform-Domain Collaborative Filtering“
% IEEE Transactions on Image Processing vol. 16 no. 8 August 2007.
% preprint at http://www.cs.tut.fi/~foi/GCF-BM3D.
%
%
% FUNCTION INTERFACE:
%
% [PSNR y_est] = BM3D(y z sigma profile print_to_screen)
%
% ! The function can work without any of the input arguments
% in which case the internal default ones are used !
%
% BASIC USAGE EXAMPLES:
%
% Case 1) Using the default parameters (i.e. image name sigma etc.)
%
% [PSNR y_est] = BM3D;
%
% Case 2) Using an external noisy image:
%
% % Read a grayscale image and scale its intensities in range [01]
% y = im2double(imread(‘Cameraman256.png‘));
% % Generate the same seed used in the experimental results of [1]
% randn(‘seed‘ 0);
% % Standard deviation of the noise --- corresponding to intensity
% % range [0255] despite that the input was scaled in [01]
% sigma = 25;
% % Add the AWGN with zero mean and standard deviation ‘sigma‘
% z = y + (sigma/255)*randn(size(y));
% % Denoise ‘z‘. The denoised image is ‘y_est‘ and ‘NA = 1‘ because
% % the true image was not provided
% [NA y_est] = BM3D(1 z sigma);
% % Compute the putput PSNR
% PSNR = 10*log10(1/mean((y(:)-y_est(:)).^2))
% % show the noisy image ‘z‘ and the denoised ‘y_est‘
% figure; imshow(z);
% figure; imshow(y_est);
%
% Case 3) If the original image y is provided as the first input
% argument then some additional information is printed (PSNRs
% figures etc.). That is “[NA y_est] = BM3D(1 z sigma);“ in the
% above code should be replaced with:
%
% [PSNR y_est] = BM3D(y z sigma);
%
%
% INPUT ARGUMENTS (OPTIONAL):
%
% 1) y (matrix M x N): Noise-free image (needed for computing PSNR)
% replace with the scalar 1 if not available.
% 2) z (matrix M x N): Noisy image (intensities in range [01] or [0255])
% 3) sigma (double) : Std. dev. of the noise (corresponding to intensities
% in range [0255] even if the range of z is [01])
% 4) profile (char) : ‘np‘ --> Normal Profile
% ‘lc‘ --> Fast Profile
% 5) print_to_screen : 0 --> do not print output information (and do
% not plot figures)
% 1 --> print information and plot figures
%
% OUTPUTS:
% 1) PSNR (double) : Output PSNR (dB) only if the original
% image is available otherwis
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 9669 2011-08-26 04:12 程序\BM3D-SAPCA\BM3DSAPCA2009.p
文件 1592 2011-08-26 04:33 程序\BM3D-SAPCA\demo_BM3DSAPCA.m
文件 1699 2008-03-25 23:22 程序\BM3D-SAPCA\function_AnisLPAICI8.p
文件 5192 2008-03-25 23:22 程序\BM3D-SAPCA\function_CreateLPAKernels.m
文件 6420 2008-03-25 23:22 程序\BM3D-SAPCA\function_LPAKernelMatrixTheta.m
文件 2356 2008-03-25 23:22 程序\BM3D-SAPCA\function_Window2D.m
文件 2860 2008-03-25 23:22 程序\BM3D-SAPCA\function_WOSFilters.p
文件 1825 2011-08-26 17:21 程序\BM3D-SAPCA\README-BM3D-SAPCA.txt
文件 22796 2016-04-26 22:32 程序\BM3D.m
文件 3357190 2016-04-15 19:37 程序\BM3D.zip
文件 17170 2014-01-30 18:47 程序\BM3DDEB.m
文件 17668 2009-06-17 14:58 程序\BM3DSHARP.m
文件 17778 2014-01-31 03:47 程序\BM3D_CFA.m
文件 73125 2014-01-30 19:26 程序\bm3d_CFA_thr.mexa64
文件 48288 2014-01-31 03:33 程序\bm3d_CFA_thr.mexglx
文件 58644 2013-12-02 11:38 程序\bm3d_CFA_thr.mexmaci64
文件 73728 2013-11-28 02:15 程序\bm3d_CFA_thr.mexw32
文件 90624 2013-11-27 19:43 程序\bm3d_CFA_thr.mexw64
文件 43392 2014-01-30 19:29 程序\bm3d_CFA_wiener.mexa64
文件 31763 2014-01-31 03:33 程序\bm3d_CFA_wiener.mexglx
文件 38052 2013-12-02 11:38 程序\bm3d_CFA_wiener.mexmaci64
文件 56832 2013-11-28 02:26 程序\bm3d_CFA_wiener.mexw32
文件 67584 2013-11-27 19:46 程序\bm3d_CFA_wiener.mexw64
文件 55065 2011-06-01 18:48 程序\bm3d_thr.mexa64
文件 41369 2011-06-01 18:41 程序\bm3d_thr.mexglx
文件 58764 2011-06-03 17:25 程序\bm3d_thr.mexmaci
文件 54552 2011-06-03 17:24 程序\bm3d_thr.mexmaci64
文件 72704 2011-06-01 17:04 程序\bm3d_thr.mexw32
文件 90624 2011-06-01 12:31 程序\bm3d_thr.mexw64
文件 39669 2011-06-01 18:48 程序\bm3d_thr_color.mexa64
............此处省略72个文件信息
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