diff options
Diffstat (limited to 'Wrappers/Matlab')
| -rw-r--r-- | Wrappers/Matlab/demos/demoMatlab_denoise.m | 15 | ||||
| -rw-r--r-- | Wrappers/Matlab/mex_compile/compileCPU_mex_Linux.m | 6 | ||||
| -rw-r--r-- | Wrappers/Matlab/mex_compile/regularisers_CPU/NeighbSearch2D_test.c | 207 | ||||
| -rw-r--r-- | Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV.c | 111 | ||||
| -rw-r--r-- | Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV_core.c | 169 | ||||
| -rw-r--r-- | Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV_core.h | 61 | ||||
| -rw-r--r-- | Wrappers/Matlab/mex_compile/regularisers_CPU/PatchSelect.c | 92 | ||||
| -rw-r--r-- | Wrappers/Matlab/mex_compile/regularisers_CPU/PatchSelect_core.c (renamed from Wrappers/Matlab/mex_compile/regularisers_CPU/NeighbSelect.c) | 79 | ||||
| -rw-r--r-- | Wrappers/Matlab/mex_compile/regularisers_CPU/PatchSelect_core.h | 62 |
9 files changed, 442 insertions, 360 deletions
diff --git a/Wrappers/Matlab/demos/demoMatlab_denoise.m b/Wrappers/Matlab/demos/demoMatlab_denoise.m index d11bc63..2cbdb56 100644 --- a/Wrappers/Matlab/demos/demoMatlab_denoise.m +++ b/Wrappers/Matlab/demos/demoMatlab_denoise.m @@ -135,6 +135,21 @@ figure; imshow(u_diff4, [0 1]); title('Diffusion 4thO denoised image (CPU)'); % tic; u_diff4_g = Diffusion_4thO_GPU(single(u0), lambda_regDiff, sigmaPar, iter_diff, tau_param); toc; % figure; imshow(u_diff4_g, [0 1]); title('Diffusion 4thO denoised image (GPU)'); %% +fprintf('Weights pre-calculation for Non-local TV (takes time on CPU) \n'); +SearchingWindow = 9; +PatchWindow = 3; +NeighboursNumber = 15; % the number of neibours to include +h = 0.25; % edge related parameter for NLM +[H_i, H_j, Weights] = PatchSelect(single(u0), SearchingWindow, PatchWindow, NeighboursNumber, h); +%% +fprintf('Denoise using Non-local Total Variation (CPU) \n'); +iter_nltv = 3; % number of nltv iterations +lambda_nltv = 0.085; % regularisation parameter for nltv +tic; u_nltv = Nonlocal_TV(single(u0), H_i, H_j, 0, Weights, lambda_nltv, iter_nltv); toc; +rmse_nltv = (RMSE(u_nltv(:),Im(:))); +fprintf('%s %f \n', 'RMSE error for Non-local Total Variation is:', rmse_nltv); +figure; imshow(u_nltv, [0 1]); title('Non-local Total Variation denoised image (CPU)'); +%% %>>>>>>>>>>>>>> MULTI-CHANNEL priors <<<<<<<<<<<<<<< % diff --git a/Wrappers/Matlab/mex_compile/compileCPU_mex_Linux.m b/Wrappers/Matlab/mex_compile/compileCPU_mex_Linux.m index 767d811..49b5dfd 100644 --- a/Wrappers/Matlab/mex_compile/compileCPU_mex_Linux.m +++ b/Wrappers/Matlab/mex_compile/compileCPU_mex_Linux.m @@ -52,6 +52,12 @@ fprintf('%s \n', 'Compiling ROF-LLT...'); mex LLT_ROF.c LLT_ROF_core.c utils.c CFLAGS="\$CFLAGS -fopenmp -Wall -std=c99" LDFLAGS="\$LDFLAGS -fopenmp" movefile('LLT_ROF.mex*',Pathmove); +fprintf('%s \n', 'Compiling NonLocal-TV...'); +mex PatchSelect.c PatchSelect_core.c utils.c CFLAGS="\$CFLAGS -fopenmp -Wall -std=c99" LDFLAGS="\$LDFLAGS -fopenmp" +mex Nonlocal_TV.c Nonlocal_TV_core.c utils.c CFLAGS="\$CFLAGS -fopenmp -Wall -std=c99" LDFLAGS="\$LDFLAGS -fopenmp" +movefile('Nonlocal_TV.mex*',Pathmove); +movefile('PatchSelect.mex*',Pathmove); + fprintf('%s \n', 'Compiling additional tools...'); mex TV_energy.c utils.c CFLAGS="\$CFLAGS -fopenmp -Wall -std=c99" LDFLAGS="\$LDFLAGS -fopenmp" movefile('TV_energy.mex*',Pathmove); diff --git a/Wrappers/Matlab/mex_compile/regularisers_CPU/NeighbSearch2D_test.c b/Wrappers/Matlab/mex_compile/regularisers_CPU/NeighbSearch2D_test.c deleted file mode 100644 index d94b521..0000000 --- a/Wrappers/Matlab/mex_compile/regularisers_CPU/NeighbSearch2D_test.c +++ /dev/null @@ -1,207 +0,0 @@ -#include "mex.h" -#include <matrix.h> -#include <math.h> -#include <stdlib.h> -#include <memory.h> -#include <stdio.h> -#include "omp.h" - -#define EPS 1.0000e-12 - -/* C implementation of the spatial-dependent histogram - * currently not optimal memory-wise - * - * - * Input Parameters: - * 1. 2D grayscale image (N x N) - * 2. Number of histogram bins (M) - * 4. Similarity window (half-size) - * - * Output: - * 1. Filtered Image (N x N) - * - * - * compile from Matlab with: - * mex NLTV_SB_fast.c CFLAGS="\$CFLAGS -fopenmp -Wall -std=c99" LDFLAGS="\$LDFLAGS -fopenmp" - * - * Im = double(imread('barb.bmp'))/255; % loading image - * u0 = Im + .05*randn(size(Im)); u0(u0<0) = 0; % adding noise - * [Filtered, theta, I1, J1] = NLTV_SB_fast(single(u0), 7, 7, 20, 0.1); - * D. Kazantsev - */ - -float copyIm(float *A, float *B, int dimX, int dimY, int dimZ); - -/*2D functions */ -float Indeces2D(float *Aorig, unsigned short *H_i, unsigned short *H_j, float *Weights, int i, int j, int dimY, int dimX, int NumNeighb, int SearchWindow, int SimilarWin, float h2); -float NLM_ST_H1(float *Aorig, float *Output, unsigned short *H_i, unsigned short *H_j, float *Weights, int i, int j, int dimX, int dimY, int NumNeighb, float beta, int IterNumb); - - - -float denoise2D(float *Aorig, float *Output, unsigned short *H_i, unsigned short *H_j, float *Weights, int i, int j, int dimY, int dimX, int NumNeighb); -/**************************************************/ - -void mexFunction( - int nlhs, mxArray *plhs[], - int nrhs, const mxArray *prhs[]) -{ - int number_of_dims, i, j, k, dimX, dimY, dimZ, SearchWindow, SimilarWin, NumNeighb,kk; - unsigned short *H_i=NULL, *H_j=NULL; - const int *dim_array; - float *A, *Output, *Weights, h, h2, lambda; - int dim_array2[3]; - - dim_array = mxGetDimensions(prhs[0]); - number_of_dims = mxGetNumberOfDimensions(prhs[0]); - - /*Handling Matlab input data*/ - A = (float *) mxGetData(prhs[0]); /* a 2D image or a set of 2D images (3D stack) */ - SearchWindow = (int) mxGetScalar(prhs[1]); /* Large Searching window to find and cluster intensities */ - SimilarWin = (int) mxGetScalar(prhs[2]); /* Similarity window */ - NumNeighb = (int) mxGetScalar(prhs[3]); /* the total number of neighbours to take */ - h = (float) mxGetScalar(prhs[4]); /* NLM parameter */ - - h2 = h*h; - dimX = dim_array[0]; dimY = dim_array[1]; dimZ = dim_array[2]; - dim_array2[0] = dimX; dim_array2[1] = dimY; dim_array2[2] = NumNeighb; /* 2D case */ - - /*****2D INPUT *****/ - if (number_of_dims == 2) { - dimZ = 0; - H_i = (unsigned short*)mxGetPr(plhs[0] = mxCreateNumericArray(3, dim_array2, mxUINT16_CLASS, mxREAL)); - H_j = (unsigned short*)mxGetPr(plhs[1] = mxCreateNumericArray(3, dim_array2, mxUINT16_CLASS, mxREAL)); - Weights = (float*)mxGetPr(plhs[2] = mxCreateNumericArray(3, dim_array2, mxSINGLE_CLASS, mxREAL)); - Output = (float*)mxGetPr(plhs[3] = mxCreateNumericArray(2, dim_array, mxSINGLE_CLASS, mxREAL)); - - /* for each pixel store indeces of the most similar neighbours (patches) */ -#pragma omp parallel for shared (A, Output, Weights, H_i, H_j) private(i,j) - for(i=0; i<dimX; i++) { - for(j=0; j<dimY; j++) { - Indeces2D(A, H_i, H_j, Weights, i, j, dimX, dimY, NumNeighb, SearchWindow, SimilarWin, h2); - // denoise2D(A, Output, H_i, H_j, Weights, i, j, dimX, dimY, NumNeighb); - NLM_ST_H1(A, Output, H_i, H_j, Weights, i, j, dimX, dimY, NumNeighb, 0.01f, 1); - }} - } - /*****3D INPUT *****/ - /****************************************************/ - if (number_of_dims == 3) { - } -} - - -float Indeces2D(float *Aorig, unsigned short *H_i, unsigned short *H_j, float *Weights, int i, int j, int dimY, int dimX, int NumNeighb, int SearchWindow, int SimilarWin, float h2) -{ - int i1, j1, i_m, j_m, i_c, j_c, i2, j2, i3, j3, k, counter, x, y; - float *Weight_Vec, normsum, temp; - unsigned short *ind_i, *ind_j, temp_i, temp_j; - - - Weight_Vec = (float*) calloc((2*SearchWindow + 1)*(2*SearchWindow + 1), sizeof(float)); - ind_i = (unsigned short*) calloc((2*SearchWindow + 1)*(2*SearchWindow + 1), sizeof(unsigned short)); - ind_j = (unsigned short*) calloc((2*SearchWindow + 1)*(2*SearchWindow + 1), sizeof(unsigned short)); - - counter = 0; - for(i_m=-SearchWindow; i_m<=SearchWindow; i_m++) { - for(j_m=-SearchWindow; j_m<=SearchWindow; j_m++) { - i1 = i+i_m; - j1 = j+j_m; - if (((i1 >= 0) && (i1 < dimX)) && ((j1 >= 0) && (j1 < dimY))) { - normsum = 0; - for(i_c=-SimilarWin; i_c<=SimilarWin; i_c++) { - for(j_c=-SimilarWin; j_c<=SimilarWin; j_c++) { - i2 = i1 + i_c; - j2 = j1 + j_c; - i3 = i + i_c; - j3 = j + j_c; - if (((i2 >= 0) && (i2 < dimX)) && ((j2 >= 0) && (j2 < dimY))) { - if (((i3 >= 0) && (i3 < dimX)) && ((j3 >= 0) && (j3 < dimY))) { - normsum += pow(Aorig[i3*dimY+j3] - Aorig[i2*dimY+j2], 2); - }} - }} - /* writing temporarily into vectors */ - if (normsum > EPS) Weight_Vec[counter] = exp(-normsum/h2); - ind_i[counter] = i1; - ind_j[counter] = j1; - counter ++; - } - }} - /* do sorting to choose the most prominent weights [LOW -> HIGH]*/ - /* and re-arrange indeces accordingly */ - for(x=0; x < counter; x++) { - for(y=0; y < counter - 1; y++) { - if(Weight_Vec[y] < Weight_Vec[y+1]) { - temp = Weight_Vec[y+1]; - temp_i = ind_i[y+1]; - temp_j = ind_j[y+1]; - Weight_Vec[y+1] = Weight_Vec[y]; - Weight_Vec[y] = temp; - ind_i[y+1] = ind_i[y]; - ind_i[y] = temp_i; - ind_j[y+1] = ind_j[y]; - ind_j[y] = temp_j; - }}} /*sorting loop end*/ - - // printf("%f %i %i \n", Weight_Vec[10], ind_i[10], ind_j[10]); - /*now select NumNeighb more prominent weights */ - for(x=0; x < NumNeighb; x++) { - H_i[(dimX*dimY*x) + i*dimY+j] = ind_i[x]; - H_j[(dimX*dimY*x) + i*dimY+j] = ind_j[x]; - Weights[(dimX*dimY*x) + i*dimY+j] = Weight_Vec[x]; - } - - free(ind_i); - free(ind_j); - free(Weight_Vec); - return 1; -} - -/* a test if NLM denoising works */ -float denoise2D(float *Aorig, float *Output, unsigned short *H_i, unsigned short *H_j, float *Weights, int i, int j, int dimY, int dimX, int NumNeighb) -{ - int x, i1, j1; - float value = 0.0f, normweight = 0.0f; - - for(x=0; x < NumNeighb; x++) { - i1 = (H_i[(dimX*dimY*x) + i*dimY+j]); - j1 = (H_j[(dimX*dimY*x) + i*dimY+j]); - value += Aorig[i1*dimY+j1]*Weights[(dimX*dimY*x) + i*dimY+j]; - normweight += Weights[(dimX*dimY*x) + i*dimY+j]; - } - if (normweight != 0) Output[i*dimY+j] = value/normweight; - else Output[i*dimY+j] = 0.0f; - - return *Output; -} - -/***********<<<<Main Function for ST NLM - H1 penalty>>>>**********/ -float NLM_ST_H1(float *Aorig, float *Output, unsigned short *H_i, unsigned short *H_j, float *Weights, int i, int j, int dimX, int dimY, int NumNeighb, float beta, int IterNumb) -{ - int x, i1, j1; - float value = 0.0f, normweight = 0.0f; - - for(x=0; x < NumNeighb; x++) { - i1 = (H_i[(dimX*dimY*x) + i*dimY+j]); - j1 = (H_j[(dimX*dimY*x) + i*dimY+j]); - value += Aorig[i1*dimY+j1]*Weights[(dimX*dimY*x) + i*dimY+j]; - normweight += Weights[(dimX*dimY*x) + i*dimY+j]; - } - -// if (normweight != 0) Output[i*dimY+j] = value/normweight; -// else Output[i*dimY+j] = 0.0f; - - Output[i*dimY+j] = (beta*Aorig[i*dimY+j] + value)/(beta + normweight); - return *Output; -} - - - -/* General Functions */ -/*****************************************************************/ -/* Copy Image */ -float copyIm(float *A, float *B, int dimX, int dimY, int dimZ) -{ - int j; -#pragma omp parallel for shared(A, B) private(j) - for(j=0; j<dimX*dimY*dimZ; j++) B[j] = A[j]; - return *B; -} diff --git a/Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV.c b/Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV.c index ee529ea..dea343c 100644 --- a/Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV.c +++ b/Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV.c @@ -1,10 +1,11 @@ /* * This work is part of the Core Imaging Library developed by * Visual Analytics and Imaging System Group of the Science Technology - * Facilities Council, STFC + * Facilities Council, STFC and Diamond Light Source Ltd. * * Copyright 2017 Daniil Kazantsev * Copyright 2017 Srikanth Nagella, Edoardo Pasca + * Copyright 2018 Diamond Light Source Ltd. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -17,18 +18,16 @@ * limitations under the License. */ +#include "matrix.h" #include "mex.h" -#include <matrix.h> -#include <math.h> -#include <stdlib.h> -#include <memory.h> -#include <stdio.h> -#include "omp.h" +#include "Nonlocal_TV_core.h" #define EPS 1.0000e-9 -/* C-OMP implementation of non-local regulariser - * Weights and associated indices must be given as an input +/* Matlab wrapper for C-OMP implementation of non-local regulariser + * Weights and associated indices must be given as an input. + * Gauss-Seidel fixed point iteration requires ~ 3 iterations, so the main effort + * goes in pre-calculation of weights and selection of patches * * * Input Parameters: @@ -43,24 +42,18 @@ * Output: * 1. denoised image/volume * Elmoataz, Abderrahim, Olivier Lezoray, and Sébastien Bougleux. "Nonlocal discrete regularization on weighted graphs: a framework for image and manifold processing." IEEE Trans. Image Processing 17, no. 7 (2008): 1047-1060. - */ -float copyIm(float *A, float *U, long dimX, long dimY, long dimZ); -float NLM_H1_2D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, float *Weights, int i, int j, int dimX, int dimY, int NumNeighb, float lambda); -float NLM_TV_2D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, float *Weights, int i, int j, int dimX, int dimY, int NumNeighb, float lambda); -/**************************************************/ - void mexFunction( int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]) { - long number_of_dims, i, j, k, dimX, dimY, dimZ, NumNeighb; - int IterNumb, iter; + long number_of_dims, dimX, dimY, dimZ; + int IterNumb, NumNeighb = 0; unsigned short *H_i, *H_j, *H_k; const int *dim_array; const int *dim_array2; - float *A_orig, *Output, *Weights, lambda; + float *A_orig, *Output=NULL, *Weights, lambda; dim_array = mxGetDimensions(prhs[0]); dim_array2 = mxGetDimensions(prhs[1]); @@ -80,83 +73,17 @@ void mexFunction( /*****2D INPUT *****/ if (number_of_dims == 2) { - dimZ = 0; - + dimZ = 0; NumNeighb = dim_array2[2]; - Output = (float*)mxGetPr(plhs[0] = mxCreateNumericArray(2, dim_array, mxSINGLE_CLASS, mxREAL)); - copyIm(A_orig, Output, (long)(dimX), (long)(dimY), 1l); - - /* for each pixel store indeces of the most similar neighbours (patches) */ - for(iter=0; iter<IterNumb; iter++) { -#pragma omp parallel for shared (A_orig, Output, Weights, H_i, H_j, iter) private(i,j) - for(i=0; i<dimX; i++) { - for(j=0; j<dimY; j++) { - //NLM_H1_2D(Output, A_orig, H_i, H_j, Weights, i, j, dimX, dimY, NumNeighb, lambda); - NLM_TV_2D(Output, A_orig, H_i, H_j, Weights, i, j, dimX, dimY, NumNeighb, lambda); - }} - } - } + Output = (float*)mxGetPr(plhs[0] = mxCreateNumericArray(2, dim_array, mxSINGLE_CLASS, mxREAL)); + } /*****3D INPUT *****/ /****************************************************/ if (number_of_dims == 3) { - Output = (float*)mxGetPr(plhs[0] = mxCreateNumericArray(3, dim_array, mxSINGLE_CLASS, mxREAL)); + NumNeighb = dim_array2[3]; + Output = (float*)mxGetPr(plhs[0] = mxCreateNumericArray(3, dim_array, mxSINGLE_CLASS, mxREAL)); } + + /* run the main function here */ + Nonlocal_TV_CPU_main(A_orig, Output, H_i, H_j, H_k, Weights, dimX, dimY, dimZ, NumNeighb, lambda, IterNumb); } - -/***********<<<<Main Function for ST NLM - H1 penalty>>>>**********/ -float NLM_H1_2D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, float *Weights, int i, int j, int dimX, int dimY, int NumNeighb, float lambda) -{ - long x, i1, j1, index; - float value = 0.0f, normweight = 0.0f; - - for(x=0; x < NumNeighb; x++) { - index = (dimX*dimY*x) + j*dimX+i; - i1 = H_i[index]; - j1 = H_j[index]; - value += A[j1*dimX+i1]*Weights[index]; - normweight += Weights[index]; - } - A[j*dimX+i] = (lambda*A_orig[j*dimX+i] + value)/(lambda + normweight); - return *A; -} - -/***********<<<<Main Function for ST NLM - TV penalty>>>>**********/ -float NLM_TV_2D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, float *Weights, int i, int j, int dimX, int dimY, int NumNeighb, float lambda) -{ - long x, i1, j1, index; - float value = 0.0f, normweight = 0.0f, NLgrad_magn = 0.0f, NLCoeff; - - for(x=0; x < NumNeighb; x++) { - index = (dimX*dimY*x) + j*dimX+i; - index = (dimX*dimY*x) + j*dimX+i; - i1 = H_i[index]; - j1 = H_j[index]; - NLgrad_magn += powf((A[j1*dimX+i1] - A[j*dimX+i]),2)*Weights[index]; - } - - NLgrad_magn = sqrtf(NLgrad_magn); /*Non Local Gradients Magnitude */ - NLCoeff = 2.0f*(1.0f/(NLgrad_magn + EPS)); - - for(x=0; x < NumNeighb; x++) { - index = (dimX*dimY*x) + j*dimX+i; - i1 = H_i[index]; - j1 = H_j[index]; - value += A[j1*dimX+i1]*NLCoeff*Weights[index]; - normweight += Weights[index]*NLCoeff; - } - A[j*dimX+i] = (lambda*A_orig[j*dimX+i] + value)/(lambda + normweight); - return *A; -} - - - -/* Copy Image (float) */ -float copyIm(float *A, float *U, long dimX, long dimY, long dimZ) -{ - long j; -#pragma omp parallel for shared(A, U) private(j) - for (j = 0; j<dimX*dimY*dimZ; j++) U[j] = A[j]; - return *U; -} - - diff --git a/Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV_core.c b/Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV_core.c new file mode 100644 index 0000000..d327dd5 --- /dev/null +++ b/Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV_core.c @@ -0,0 +1,169 @@ +/* + * This work is part of the Core Imaging Library developed by + * Visual Analytics and Imaging System Group of the Science Technology + * Facilities Council, STFC and Diamond Light Source Ltd. + * + * Copyright 2017 Daniil Kazantsev + * Copyright 2017 Srikanth Nagella, Edoardo Pasca + * Copyright 2018 Diamond Light Source Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * http://www.apache.org/licenses/LICENSE-2.0 + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "Nonlocal_TV_core.h" + +/* C-OMP implementation of non-local regulariser + * Weights and associated indices must be given as an input. + * Gauss-Seidel fixed point iteration requires ~ 3 iterations, so the main effort + * goes in pre-calculation of weights and selection of patches + * + * + * Input Parameters: + * 1. 2D/3D grayscale image/volume + * 2. AR_i - indeces of i neighbours + * 3. AR_j - indeces of j neighbours + * 4. AR_k - indeces of k neighbours (0 - for 2D case) + * 5. Weights_ij(k) - associated weights + * 6. regularisation parameter + * 7. iterations number + + * Output: + * 1. denoised image/volume + * Elmoataz, Abderrahim, Olivier Lezoray, and Sébastien Bougleux. "Nonlocal discrete regularization on weighted graphs: a framework for image and manifold processing." IEEE Trans. Image Processing 17, no. 7 (2008): 1047-1060. + + */ +/*****************************************************************************/ + +float Nonlocal_TV_CPU_main(float *A_orig, float *Output, unsigned short *H_i, unsigned short *H_j, unsigned short *H_k, float *Weights, int dimX, int dimY, int dimZ, int NumNeighb, float lambda, int IterNumb) +{ + + long i, j, k; + int iter; + + /*****2D INPUT *****/ + if (dimZ == 0) { + copyIm(A_orig, Output, (long)(dimX), (long)(dimY), 1l); + /* for each pixel store indeces of the most similar neighbours (patches) */ + for(iter=0; iter<IterNumb; iter++) { +#pragma omp parallel for shared (A_orig, Output, Weights, H_i, H_j, iter) private(i,j) + for(i=0; i<(long)(dimX); i++) { + for(j=0; j<(long)(dimY); j++) { + /* NLM_H1_2D(Output, A_orig, H_i, H_j, Weights, i, j, dimX, dimY, NumNeighb, lambda); */ /* NLM - H1 penalty */ + NLM_TV_2D(Output, A_orig, H_i, H_j, Weights, i, j, (long)(dimX), (long)(dimY), NumNeighb, lambda); /* NLM - TV penalty */ + }} + } + } + else { + /*****3D INPUT *****/ + copyIm(A_orig, Output, (long)(dimX), (long)(dimY), (long)(dimZ)); + /* for each pixel store indeces of the most similar neighbours (patches) */ + for(iter=0; iter<IterNumb; iter++) { +#pragma omp parallel for shared (A_orig, Output, Weights, H_i, H_j, H_k, iter) private(i,j,k) + for(i=0; i<(long)(dimX); i++) { + for(j=0; j<(long)(dimY); j++) { + for(k=0; k<(long)(dimZ); k++) { + /* NLM_H1_3D(Output, A_orig, H_i, H_j, H_k, Weights, i, j, k, dimX, dimY, dimZ, NumNeighb, lambda); */ /* NLM - H1 penalty */ + NLM_TV_3D(Output, A_orig, H_i, H_j, H_k, Weights, i, j, k, (long)(dimX), (long)(dimY), (long)(dimZ), NumNeighb, lambda); /* NLM - TV penalty */ + }}} + } + } + return *Output; +} + +/***********<<<<Main Function for NLM - H1 penalty>>>>**********/ +float NLM_H1_2D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, float *Weights, long i, long j, long dimX, long dimY, int NumNeighb, float lambda) +{ + long x, i1, j1, index; + float value = 0.0f, normweight = 0.0f; + + for(x=0; x < NumNeighb; x++) { + index = (dimX*dimY*x) + j*dimX+i; + i1 = H_i[index]; + j1 = H_j[index]; + value += A[j1*dimX+i1]*Weights[index]; + normweight += Weights[index]; + } + A[j*dimX+i] = (lambda*A_orig[j*dimX+i] + value)/(lambda + normweight); + return *A; +} +/*3D version*/ +float NLM_H1_3D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, unsigned short *H_k, float *Weights, long i, long j, long k, long dimX, long dimY, long dimZ, int NumNeighb, float lambda) +{ + long x, i1, j1, k1, index; + float value = 0.0f, normweight = 0.0f; + + for(x=0; x < NumNeighb; x++) { + index = dimX*dimY*dimZ*x + (dimX*dimY*k) + j*dimX+i; + i1 = H_i[index]; + j1 = H_j[index]; + k1 = H_k[index]; + value += A[(dimX*dimY*k1) + j1*dimX+i1]*Weights[index]; + normweight += Weights[index]; + } + A[(dimX*dimY*k) + j*dimX+i] = (lambda*A_orig[(dimX*dimY*k) + j*dimX+i] + value)/(lambda + normweight); + return *A; +} + + +/***********<<<<Main Function for NLM - TV penalty>>>>**********/ +float NLM_TV_2D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, float *Weights, long i, long j, long dimX, long dimY, int NumNeighb, float lambda) +{ + long x, i1, j1, index; + float value = 0.0f, normweight = 0.0f, NLgrad_magn = 0.0f, NLCoeff; + + for(x=0; x < NumNeighb; x++) { + index = (dimX*dimY*x) + j*dimX+i; + i1 = H_i[index]; + j1 = H_j[index]; + NLgrad_magn += powf((A[j1*dimX+i1] - A[j*dimX+i]),2)*Weights[index]; + } + + NLgrad_magn = sqrtf(NLgrad_magn); /*Non Local Gradients Magnitude */ + NLCoeff = 2.0f*(1.0f/(NLgrad_magn + EPS)); + + for(x=0; x < NumNeighb; x++) { + index = (dimX*dimY*x) + j*dimX+i; + i1 = H_i[index]; + j1 = H_j[index]; + value += A[j1*dimX+i1]*NLCoeff*Weights[index]; + normweight += Weights[index]*NLCoeff; + } + A[j*dimX+i] = (lambda*A_orig[j*dimX+i] + value)/(lambda + normweight); + return *A; +} +/*3D version*/ +float NLM_TV_3D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, unsigned short *H_k, float *Weights, long i, long j, long k, long dimX, long dimY, long dimZ, int NumNeighb, float lambda) +{ + long x, i1, j1, k1, index; + float value = 0.0f, normweight = 0.0f, NLgrad_magn = 0.0f, NLCoeff; + + for(x=0; x < NumNeighb; x++) { + index = dimX*dimY*dimZ*x + (dimX*dimY*k) + j*dimX+i; + i1 = H_i[index]; + j1 = H_j[index]; + k1 = H_k[index]; + NLgrad_magn += powf((A[(dimX*dimY*k1) + j1*dimX+i1] - A[(dimX*dimY*k1) + j*dimX+i]),2)*Weights[index]; + } + + NLgrad_magn = sqrtf(NLgrad_magn); /*Non Local Gradients Magnitude */ + NLCoeff = 2.0f*(1.0f/(NLgrad_magn + EPS)); + + for(x=0; x < NumNeighb; x++) { + index = dimX*dimY*dimZ*x + (dimX*dimY*k) + j*dimX+i; + i1 = H_i[index]; + j1 = H_j[index]; + k1 = H_k[index]; + value += A[(dimX*dimY*k1) + j1*dimX+i1]*NLCoeff*Weights[index]; + normweight += Weights[index]*NLCoeff; + } + A[(dimX*dimY*k) + j*dimX+i] = (lambda*A_orig[(dimX*dimY*k) + j*dimX+i] + value)/(lambda + normweight); + return *A; +} diff --git a/Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV_core.h b/Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV_core.h new file mode 100644 index 0000000..5b6963e --- /dev/null +++ b/Wrappers/Matlab/mex_compile/regularisers_CPU/Nonlocal_TV_core.h @@ -0,0 +1,61 @@ +/* + * This work is part of the Core Imaging Library developed by + * Visual Analytics and Imaging System Group of the Science Technology + * Facilities Council, STFC and Diamond Light Source Ltd. + * + * Copyright 2017 Daniil Kazantsev + * Copyright 2017 Srikanth Nagella, Edoardo Pasca + * Copyright 2018 Diamond Light Source Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * http://www.apache.org/licenses/LICENSE-2.0 + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <math.h> +#include <stdlib.h> +#include <memory.h> +#include <stdio.h> +#include "omp.h" +#include "utils.h" +#include "CCPiDefines.h" + +#define EPS 1.0000e-9 + +/* C-OMP implementation of non-local regulariser + * Weights and associated indices must be given as an input. + * Gauss-Seidel fixed point iteration requires ~ 3 iterations, so the main effort + * goes in pre-calculation of weights and selection of patches + * + * + * Input Parameters: + * 1. 2D/3D grayscale image/volume + * 2. AR_i - indeces of i neighbours + * 3. AR_j - indeces of j neighbours + * 4. AR_k - indeces of k neighbours (0 - for 2D case) + * 5. Weights_ij(k) - associated weights + * 6. regularisation parameter + * 7. iterations number + + * Output: + * 1. denoised image/volume + * Elmoataz, Abderrahim, Olivier Lezoray, and Sébastien Bougleux. "Nonlocal discrete regularization on weighted graphs: a framework for image and manifold processing." IEEE Trans. Image Processing 17, no. 7 (2008): 1047-1060. + */ + +#ifdef __cplusplus +extern "C" { +#endif +CCPI_EXPORT float Nonlocal_TV_CPU_main(float *A_orig, float *Output, unsigned short *H_i, unsigned short *H_j, unsigned short *H_k, float *Weights, int dimX, int dimY, int dimZ, int NumNeighb, float lambda, int IterNumb); +CCPI_EXPORT float NLM_H1_2D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, float *Weights, long i, long j, long dimX, long dimY, int NumNeighb, float lambda); +CCPI_EXPORT float NLM_TV_2D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, float *Weights, long i, long j, long dimX, long dimY, int NumNeighb, float lambda); +CCPI_EXPORT float NLM_H1_3D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, unsigned short *H_k, float *Weights, long i, long j, long k, long dimX, long dimY, long dimZ, int NumNeighb, float lambda); +CCPI_EXPORT float NLM_TV_3D(float *A, float *A_orig, unsigned short *H_i, unsigned short *H_j, unsigned short *H_k, float *Weights, long i, long j, long k, long dimX, long dimY, long dimZ, int NumNeighb, float lambda); +#ifdef __cplusplus +} +#endif diff --git a/Wrappers/Matlab/mex_compile/regularisers_CPU/PatchSelect.c b/Wrappers/Matlab/mex_compile/regularisers_CPU/PatchSelect.c new file mode 100644 index 0000000..fdd9a97 --- /dev/null +++ b/Wrappers/Matlab/mex_compile/regularisers_CPU/PatchSelect.c @@ -0,0 +1,92 @@ +/* + * This work is part of the Core Imaging Library developed by + * Visual Analytics and Imaging System Group of the Science Technology + * Facilities Council, STFC and Diamond Light Source Ltd. + * + * Copyright 2017 Daniil Kazantsev + * Copyright 2017 Srikanth Nagella, Edoardo Pasca + * Copyright 2018 Diamond Light Source Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * http://www.apache.org/licenses/LICENSE-2.0 + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "matrix.h" +#include "mex.h" +#include "PatchSelect_core.h" + +/* C-OMP implementation of non-local weight pre-calculation for non-local priors + * Weights and associated indices are stored into pre-allocated arrays and passed + * to the regulariser + * + * + * Input Parameters: + * 1. 2D/3D grayscale image/volume + * 2. Searching window (half-size of the main bigger searching window, e.g. 11) + * 3. Similarity window (half-size of the patch window, e.g. 2) + * 4. The number of neighbours to take (the most prominent after sorting neighbours will be taken) + * 5. noise-related parameter to calculate non-local weights + * + * Output [2D]: + * 1. AR_i - indeces of i neighbours + * 2. AR_j - indeces of j neighbours + * 3. Weights_ij - associated weights + * + * Output [3D]: + * 1. AR_i - indeces of i neighbours + * 2. AR_j - indeces of j neighbours + * 3. AR_k - indeces of j neighbours + * 4. Weights_ijk - associated weights + */ +/**************************************************/ +void mexFunction( + int nlhs, mxArray *plhs[], + int nrhs, const mxArray *prhs[]) +{ + int number_of_dims, SearchWindow, SimilarWin, NumNeighb; + mwSize dimX, dimY, dimZ; + unsigned short *H_i=NULL, *H_j=NULL, *H_k=NULL; + const int *dim_array; + float *A, *Weights = NULL, h; + int dim_array2[3]; /* for 2D data */ + int dim_array3[4]; /* for 3D data */ + + dim_array = mxGetDimensions(prhs[0]); + number_of_dims = mxGetNumberOfDimensions(prhs[0]); + + /*Handling Matlab input data*/ + A = (float *) mxGetData(prhs[0]); /* a 2D or 3D image/volume */ + SearchWindow = (int) mxGetScalar(prhs[1]); /* Large Searching window */ + SimilarWin = (int) mxGetScalar(prhs[2]); /* Similarity window (patch-search)*/ + NumNeighb = (int) mxGetScalar(prhs[3]); /* the total number of neighbours to take */ + h = (float) mxGetScalar(prhs[4]); /* NLM parameter */ + + dimX = dim_array[0]; dimY = dim_array[1]; dimZ = dim_array[2]; + dim_array2[0] = dimX; dim_array2[1] = dimY; dim_array2[2] = NumNeighb; /* 2D case */ + dim_array3[0] = dimX; dim_array3[1] = dimY; dim_array3[2] = dimZ; dim_array3[3] = NumNeighb; /* 3D case */ + + /****************2D INPUT ***************/ + if (number_of_dims == 2) { + dimZ = 0; + H_i = (unsigned short*)mxGetPr(plhs[0] = mxCreateNumericArray(3, dim_array2, mxUINT16_CLASS, mxREAL)); + H_j = (unsigned short*)mxGetPr(plhs[1] = mxCreateNumericArray(3, dim_array2, mxUINT16_CLASS, mxREAL)); + Weights = (float*)mxGetPr(plhs[2] = mxCreateNumericArray(3, dim_array2, mxSINGLE_CLASS, mxREAL)); + } + /****************3D INPUT ***************/ + if (number_of_dims == 3) { + H_i = (unsigned short*)mxGetPr(plhs[0] = mxCreateNumericArray(4, dim_array3, mxUINT16_CLASS, mxREAL)); + H_j = (unsigned short*)mxGetPr(plhs[1] = mxCreateNumericArray(4, dim_array3, mxUINT16_CLASS, mxREAL)); + H_k = (unsigned short*)mxGetPr(plhs[2] = mxCreateNumericArray(4, dim_array3, mxUINT16_CLASS, mxREAL)); + Weights = (float*)mxGetPr(plhs[3] = mxCreateNumericArray(4, dim_array3, mxSINGLE_CLASS, mxREAL)); + } + + PatchSelect_CPU_main(A, H_i, H_j, H_k, Weights, (long)(dimX), (long)(dimY), (long)(dimZ), SearchWindow, SimilarWin, NumNeighb, h); + + } diff --git a/Wrappers/Matlab/mex_compile/regularisers_CPU/NeighbSelect.c b/Wrappers/Matlab/mex_compile/regularisers_CPU/PatchSelect_core.c index d7c56ec..efc5498 100644 --- a/Wrappers/Matlab/mex_compile/regularisers_CPU/NeighbSelect.c +++ b/Wrappers/Matlab/mex_compile/regularisers_CPU/PatchSelect_core.c @@ -1,10 +1,11 @@ /* * This work is part of the Core Imaging Library developed by * Visual Analytics and Imaging System Group of the Science Technology - * Facilities Council, STFC + * Facilities Council, STFC and Diamond Light Source Ltd. * * Copyright 2017 Daniil Kazantsev * Copyright 2017 Srikanth Nagella, Edoardo Pasca + * Copyright 2018 Diamond Light Source Ltd. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -17,15 +18,7 @@ * limitations under the License. */ -#include "mex.h" -#include <matrix.h> -#include <math.h> -#include <stdlib.h> -#include <memory.h> -#include <stdio.h> -#include "omp.h" - -#define EPS 1.0000e-12 +#include "PatchSelect_core.h" /* C-OMP implementation of non-local weight pre-calculation for non-local priors * Weights and associated indices are stored into pre-allocated arrays and passed @@ -49,46 +42,19 @@ * 2. AR_j - indeces of j neighbours * 3. AR_k - indeces of j neighbours * 4. Weights_ijk - associated weights - * - * compile from Matlab with: - * mex NeighbSearch2D_test.c CFLAGS="\$CFLAGS -fopenmp -Wall -std=c99" LDFLAGS="\$LDFLAGS -fopenmp" */ -float Indeces2D(float *Aorig, unsigned short *H_i, unsigned short *H_j, float *Weights, long i, long j, long dimY, long dimX, float *Eucl_Vec, int NumNeighb, int SearchWindow, int SimilarWin, float h2); -float Indeces3D(float *Aorig, unsigned short *H_i, unsigned short *H_j, unsigned short *H_k, float *Weights, long i, long j, long k, long dimY, long dimX, long dimZ, float *Eucl_Vec, int NumNeighb, int SearchWindow, int SimilarWin, float h2); - /**************************************************/ -void mexFunction( - int nlhs, mxArray *plhs[], - int nrhs, const mxArray *prhs[]) + +float PatchSelect_CPU_main(float *A, unsigned short *H_i, unsigned short *H_j, unsigned short *H_k, float *Weights, long dimX, long dimY, long dimZ, int SearchWindow, int SimilarWin, int NumNeighb, float h) { - int number_of_dims, SearchWindow, SimilarWin, NumNeighb, counterG; - long i, j, k, dimX, dimY, dimZ; - unsigned short *H_i=NULL, *H_j=NULL, *H_k=NULL; - const int *dim_array; - float *A, *Weights, *Eucl_Vec, h, h2; - int dim_array2[3]; /* for 2D data */ - int dim_array3[4]; /* for 3D data */ - - dim_array = mxGetDimensions(prhs[0]); - number_of_dims = mxGetNumberOfDimensions(prhs[0]); - - /*Handling Matlab input data*/ - A = (float *) mxGetData(prhs[0]); /* a 2D or 3D image/volume */ - SearchWindow = (int) mxGetScalar(prhs[1]); /* Large Searching window */ - SimilarWin = (int) mxGetScalar(prhs[2]); /* Similarity window (patch-search)*/ - NumNeighb = (int) mxGetScalar(prhs[3]); /* the total number of neighbours to take */ - h = (float) mxGetScalar(prhs[4]); /* NLM parameter */ - h2 = h*h; - - dimX = dim_array[0]; dimY = dim_array[1]; dimZ = dim_array[2]; - dim_array2[0] = dimX; dim_array2[1] = dimY; dim_array2[2] = NumNeighb; /* 2D case */ - dim_array3[0] = dimX; dim_array3[1] = dimY; dim_array3[2] = dimZ; dim_array3[3] = NumNeighb; /* 3D case */ - + int counterG; + long i, j, k; + float *Eucl_Vec, h2; + h2 = h*h; + /****************2D INPUT ***************/ - if (number_of_dims == 2) { - dimZ = 0; - + if (dimZ == 0) { /* generate a 2D Gaussian kernel for NLM procedure */ Eucl_Vec = (float*) calloc ((2*SimilarWin+1)*(2*SimilarWin+1),sizeof(float)); counterG = 0; @@ -97,21 +63,16 @@ void mexFunction( Eucl_Vec[counterG] = (float)exp(-(pow(((float) i), 2) + pow(((float) j), 2))/(2*SimilarWin*SimilarWin)); counterG++; }} /*main neighb loop */ - - H_i = (unsigned short*)mxGetPr(plhs[0] = mxCreateNumericArray(3, dim_array2, mxUINT16_CLASS, mxREAL)); - H_j = (unsigned short*)mxGetPr(plhs[1] = mxCreateNumericArray(3, dim_array2, mxUINT16_CLASS, mxREAL)); - Weights = (float*)mxGetPr(plhs[2] = mxCreateNumericArray(3, dim_array2, mxSINGLE_CLASS, mxREAL)); - + /* for each pixel store indeces of the most similar neighbours (patches) */ #pragma omp parallel for shared (A, Weights, H_i, H_j) private(i,j) for(i=0; i<dimX; i++) { for(j=0; j<dimY; j++) { - Indeces2D(A, H_i, H_j, Weights, i, j, dimX, dimY, Eucl_Vec, NumNeighb, SearchWindow, SimilarWin, h2); + Indeces2D(A, H_i, H_j, Weights, (i), (j), (dimX), (dimY), Eucl_Vec, NumNeighb, SearchWindow, SimilarWin, h2); }} } - /****************3D INPUT ***************/ - if (number_of_dims == 3) { - + else { + /****************3D INPUT ***************/ /* generate a 3D Gaussian kernel for NLM procedure */ Eucl_Vec = (float*) calloc ((2*SimilarWin+1)*(2*SimilarWin+1)*(2*SimilarWin+1),sizeof(float)); counterG = 0; @@ -120,22 +81,18 @@ void mexFunction( for(k=-SimilarWin; k<=SimilarWin; k++) { Eucl_Vec[counterG] = (float)exp(-(pow(((float) i), 2) + pow(((float) j), 2) + pow(((float) k), 2))/(2*SimilarWin*SimilarWin*SimilarWin)); counterG++; - }}} /*main neighb loop */ - - H_i = (unsigned short*)mxGetPr(plhs[0] = mxCreateNumericArray(4, dim_array3, mxUINT16_CLASS, mxREAL)); - H_j = (unsigned short*)mxGetPr(plhs[1] = mxCreateNumericArray(4, dim_array3, mxUINT16_CLASS, mxREAL)); - H_k = (unsigned short*)mxGetPr(plhs[2] = mxCreateNumericArray(4, dim_array3, mxUINT16_CLASS, mxREAL)); - Weights = (float*)mxGetPr(plhs[3] = mxCreateNumericArray(4, dim_array3, mxSINGLE_CLASS, mxREAL)); + }}} /*main neighb loop */ /* for each voxel store indeces of the most similar neighbours (patches) */ #pragma omp parallel for shared (A, Weights, H_i, H_j, H_k) private(i,j,k) for(i=0; i<dimX; i++) { for(j=0; j<dimY; j++) { for(k=0; k<dimZ; k++) { - Indeces3D(A, H_i, H_j, H_k, Weights, i, j, k, dimX, dimY, dimZ, Eucl_Vec, NumNeighb, SearchWindow, SimilarWin, h2); + Indeces3D(A, H_i, H_j, H_k, Weights, (i), (j), (k), (dimX), (dimY), (dimZ), Eucl_Vec, NumNeighb, SearchWindow, SimilarWin, h2); }}} } free(Eucl_Vec); + return 1; } float Indeces2D(float *Aorig, unsigned short *H_i, unsigned short *H_j, float *Weights, long i, long j, long dimY, long dimX, float *Eucl_Vec, int NumNeighb, int SearchWindow, int SimilarWin, float h2) diff --git a/Wrappers/Matlab/mex_compile/regularisers_CPU/PatchSelect_core.h b/Wrappers/Matlab/mex_compile/regularisers_CPU/PatchSelect_core.h new file mode 100644 index 0000000..43fce87 --- /dev/null +++ b/Wrappers/Matlab/mex_compile/regularisers_CPU/PatchSelect_core.h @@ -0,0 +1,62 @@ +/* + * This work is part of the Core Imaging Library developed by + * Visual Analytics and Imaging System Group of the Science Technology + * Facilities Council, STFC and Diamond Light Source Ltd. + * + * Copyright 2017 Daniil Kazantsev + * Copyright 2017 Srikanth Nagella, Edoardo Pasca + * Copyright 2018 Diamond Light Source Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * http://www.apache.org/licenses/LICENSE-2.0 + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <math.h> +#include <stdlib.h> +#include <memory.h> +#include <stdio.h> +#include "omp.h" +#include "utils.h" +#include "CCPiDefines.h" +#define EPS 1.0000e-12 + +/* C-OMP implementation of non-local weight pre-calculation for non-local priors + * Weights and associated indices are stored into pre-allocated arrays and passed + * to the regulariser + * + * + * Input Parameters: + * 1. 2D/3D grayscale image/volume + * 2. Searching window (half-size of the main bigger searching window, e.g. 11) + * 3. Similarity window (half-size of the patch window, e.g. 2) + * 4. The number of neighbours to take (the most prominent after sorting neighbours will be taken) + * 5. noise-related parameter to calculate non-local weights + * + * Output [2D]: + * 1. AR_i - indeces of i neighbours + * 2. AR_j - indeces of j neighbours + * 3. Weights_ij - associated weights + * + * Output [3D]: + * 1. AR_i - indeces of i neighbours + * 2. AR_j - indeces of j neighbours + * 3. AR_k - indeces of j neighbours + * 4. Weights_ijk - associated weights + */ +/*****************************************************************************/ +#ifdef __cplusplus +extern "C" { +#endif +CCPI_EXPORT float PatchSelect_CPU_main(float *A, unsigned short *H_i, unsigned short *H_j, unsigned short *H_k, float *Weights, long dimX, long dimY, long dimZ, int SearchWindow, int SimilarWin, int NumNeighb, float h); +CCPI_EXPORT float Indeces2D(float *Aorig, unsigned short *H_i, unsigned short *H_j, float *Weights, long i, long j, long dimY, long dimX, float *Eucl_Vec, int NumNeighb, int SearchWindow, int SimilarWin, float h2); +CCPI_EXPORT float Indeces3D(float *Aorig, unsigned short *H_i, unsigned short *H_j, unsigned short *H_k, float *Weights, long i, long j, long k, long dimY, long dimX, long dimZ, float *Eucl_Vec, int NumNeighb, int SearchWindow, int SimilarWin, float h2); +#ifdef __cplusplus +} +#endif |