3 # File : greycstoration.h
6 # Description : GREYCstoration plug-in allowing easy integration in
7 # third parties softwares.
8 # ( http://www.greyc.ensicaen.fr/~dtschump/greycstoration/ )
9 # This file is a part of the CImg Library project.
10 # ( http://cimg.sourceforge.net )
12 # THIS PLUG-IN IS INTENDED FOR DEVELOPERS ONLY. IT EASES THE INTEGRATION ALGORITHM IN
13 # THIRD PARTIES SOFTWARES. IF YOU ARE A USER OF GREYCSTORATION, PLEASE LOOK
14 # AT THE FILE 'greycstoration.cpp' WHICH IS THE SOURCE OF THE COMPLETE
15 # COMMAND LINE GREYCSTORATION TOOL.
17 # Copyright : David Tschumperle
18 # ( http://www.greyc.ensicaen.fr/~dtschump/ )
20 # License : CeCILL v2.0
21 # ( http://www.cecill.info/licences/Licence_CeCILL_V2-en.html )
23 # This software is governed by the CeCILL license under French law and
24 # abiding by the rules of distribution of free software. You can use,
25 # modify and/ or redistribute the software under the terms of the CeCILL
26 # license as circulated by CEA, CNRS and INRIA at the following URL
27 # "http://www.cecill.info".
29 # As a counterpart to the access to the source code and rights to copy,
30 # modify and redistribute granted by the license, users are provided only
31 # with a limited warranty and the software's author, the holder of the
32 # economic rights, and the successive licensors have only limited
35 # In this respect, the user's attention is drawn to the risks associated
36 # with loading, using, modifying and/or developing or reproducing the
37 # software by the user in light of its specific status of free software,
38 # that may mean that it is complicated to manipulate, and that also
39 # therefore means that it is reserved for developers and experienced
40 # professionals having in-depth() computer knowledge. Users are therefore
41 # encouraged to load and test the software's suitability as regards their
42 # requirements in conditions enabling the security of their systems and/or
43 # data to be ensured and, more generally, to use and operate it in the
44 # same conditions as regards security.
46 # The fact that you are presently reading this means that you have had
47 # knowledge of the CeCILL license and that you accept its terms.
51 #ifndef cimg_plugin_greycstoration
52 #define cimg_plugin_greycstoration
54 //------------------------------------------------------------------------------
55 // GREYCstoration parameter structure, storing important informations about
56 // algorithm parameters and computing threads.
57 // ** This structure has not to be manipulated by the API user, so please just
58 // ignore it if you want to **
59 //-------------------------------------------------------------------------------
60 struct _greycstoration_params {
62 // Tell if the patch-based algorithm is selected
65 // Parameters specific to the non-patch regularization algorithm
75 unsigned int interpolation;
77 // Parameters specific to the patch-based regularization algorithm
78 unsigned int patch_size;
81 unsigned int lookup_size;
83 // Non-specific parameters of the algorithms.
85 const CImg<float> *mask;
87 unsigned long *counter;
89 unsigned int tile_border;
91 unsigned int nb_threads;
95 #if cimg_OS==1 && defined(_PTHREAD_H)
104 // Default constructor
105 _greycstoration_params():patch_based(false),amplitude(0),sharpness(0),anisotropy(0),alpha(0),sigma(0),gfact(1),
106 dl(0),da(0),gauss_prec(0),interpolation(0),patch_size(0),
107 sigma_s(0),sigma_p(0),lookup_size(0),source(0),mask(0),temporary(0),counter(0),tile(0),
108 tile_border(0),thread(0),nb_threads(0),fast_approx(false),is_running(false), stop_request(0), mutex(0) {}
111 _greycstoration_params greycstoration_params[16];
113 //----------------------------------------------------------
114 // Public functions of the GREYCstoration API.
115 // Use the functions below for integrating GREYCstoration
116 // in your own C++ code.
117 //----------------------------------------------------------
119 //! Test if GREYCstoration threads are still running.
120 bool greycstoration_is_running() const {
121 return greycstoration_params->is_running;
124 //! Force the GREYCstoration threads to stop.
125 CImg& greycstoration_stop() {
126 if (greycstoration_is_running()) {
127 *(greycstoration_params->stop_request) = true;
128 while (greycstoration_params->is_running) cimg::wait(50);
133 //! Return the GREYCstoration progress bar indice (between 0 and 100).
134 float greycstoration_progress() const {
135 if (!greycstoration_is_running()) return 0.0f;
136 const unsigned long counter = greycstoration_params->counter?*(greycstoration_params->counter):0;
138 da = greycstoration_params->da,
139 factor = greycstoration_params->patch_based?1:(1+360/da);
140 float maxcounter = 0;
141 if (greycstoration_params->tile==0) maxcounter = width()*height()*depth()*factor;
144 t = greycstoration_params->tile,
145 b = greycstoration_params->tile_border,
146 n = (1+(width()-1)/t)*(1+(height()-1)/t)*(1+(depth()-1)/t);
147 maxcounter = (width()*height()*depth() + n*4*b*(b + t))*factor;
149 return cimg::min(counter*99.9f/maxcounter,99.9f);
152 //! Run the non-patch version of the GREYCstoration algorithm on the instance image, using a mask.
153 CImg& greycstoration_run(const CImg<float>& mask,
154 const float amplitude=60, const float sharpness=0.7f, const float anisotropy=0.3f,
155 const float alpha=0.6f, const float sigma=1.1f, const float gfact=1.0f,
156 const float dl=0.8f, const float da=30.0f,
157 const float gauss_prec=2.0f, const unsigned int interpolation=0, const bool fast_approx=true,
158 const unsigned int tile=0, const unsigned int tile_border=0, const unsigned int nb_threads=1) {
160 if (greycstoration_is_running())
161 throw CImgInstanceException("CImg<T>::greycstoration_run() : A GREYCstoration thread is already running on"
162 " the instance image (%u,%u,%u,%p).",width(),height(),depth(),data());
165 if (!mask.is_empty() && !mask.is_sameXY(*this))
166 throw CImgArgumentException("CImg<%s>::greycstoration_run() : Given mask (%u,%u,%u,%p) and instance image "
167 "(%u,%u,%u,%p) have different dimensions.",
168 pixel_type(),mask.width(),mask.height(),mask.depth(),
169 &mask,width(),height(),depth(),data());
170 if (nb_threads>16) cimg::warn("CImg<%s>::greycstoration_run() : Multi-threading mode limited to 16 threads max.");
172 ntile = (tile && (tile<width() || tile<height() || (depth()>1 && tile<depth())))?tile:0,
173 #if cimg_OS==1 && !defined(_PTHREAD_H)
176 nthreads = ntile?cimg::min(nb_threads,16U):cimg::min(nb_threads,1U);
179 CImg<T> *const temporary = ntile?new CImg<T>(*this):0;
180 unsigned long *const counter = new unsigned long;
182 bool *const stop_request = new bool;
183 *stop_request = false;
185 for (unsigned int k=0; k<(nthreads?nthreads:1); k++) {
186 greycstoration_params[k].patch_based = false;
187 greycstoration_params[k].amplitude = amplitude;
188 greycstoration_params[k].sharpness = sharpness;
189 greycstoration_params[k].anisotropy = anisotropy;
190 greycstoration_params[k].alpha = alpha;
191 greycstoration_params[k].sigma = sigma;
192 greycstoration_params[k].gfact = gfact;
193 greycstoration_params[k].dl = dl;
194 greycstoration_params[k].da = da;
195 greycstoration_params[k].gauss_prec = gauss_prec;
196 greycstoration_params[k].interpolation = interpolation;
197 greycstoration_params[k].fast_approx = fast_approx;
198 greycstoration_params[k].source = this;
199 greycstoration_params[k].mask = &mask;
200 greycstoration_params[k].temporary = temporary;
201 greycstoration_params[k].counter = counter;
202 greycstoration_params[k].tile = ntile;
203 greycstoration_params[k].tile_border = tile_border;
204 greycstoration_params[k].thread = k;
205 greycstoration_params[k].nb_threads = nthreads;
206 greycstoration_params[k].is_running = true;
207 greycstoration_params[k].stop_request = stop_request;
208 if (k) greycstoration_params[k].mutex = greycstoration_params[0].mutex;
209 else greycstoration_mutex_create(greycstoration_params[0]);
211 if (nthreads) { // Threaded version
215 pthread_attr_init(&attr);
216 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
217 for (unsigned int k=0; k<greycstoration_params->nb_threads; k++) {
219 const int err = pthread_create(&thread, &attr, greycstoration_thread, (void*)(greycstoration_params+k));
220 if (err) throw CImgException("CImg<%s>::greycstoration_run() : pthread_create returned error %d",
225 for (unsigned int k=0; k<greycstoration_params->nb_threads; k++) {
226 unsigned long ThreadID = 0;
227 CreateThread(0,0,greycstoration_thread,(void*)(greycstoration_params+k),0,&ThreadID);
230 throw CImgInstanceException("CImg<T>::greycstoration_run() : Threads are not supported, please define cimg_OS first.");
232 } else greycstoration_thread((void*)greycstoration_params); // Non-threaded version
237 //! Run the non-patch version of the GREYCstoration algorithm on the instance image.
238 CImg& greycstoration_run(const float amplitude=50, const float sharpness=0.7f, const float anisotropy=0.3f,
239 const float alpha=0.6f, const float sigma=1.1f, const float gfact=1.0f,
240 const float dl=0.8f, const float da=30.0f,
241 const float gauss_prec=2.0f, const unsigned int interpolation=0, const bool fast_approx=true,
242 const unsigned int tile=0, const unsigned int tile_border=0, const unsigned int nb_threads=1) {
243 return greycstoration_run(
244 get_diffusion_tensors(sharpness,anisotropy,alpha,sigma,interpolation!=3),
245 amplitude,sharpness,anisotropy,alpha,sigma,gfact,dl,da,gauss_prec,
246 interpolation,fast_approx,tile,tile_border,nb_threads);
249 //------------------------------------------------------------------------------
250 // GREYCstoration private functions.
251 // Should not be used directly by the API user.
252 //-------------------------------------------------------------------------------
254 static void greycstoration_mutex_create(_greycstoration_params &p) {
255 if (p.nb_threads>1) {
256 #if cimg_OS==1 && defined(_PTHREAD_H)
257 p.mutex = new pthread_mutex_t;
258 pthread_mutex_init(p.mutex,0);
260 p.mutex = CreateMutex(0,FALSE,0);
265 static void greycstoration_mutex_lock(_greycstoration_params &p) {
266 if (p.nb_threads>1) {
267 #if cimg_OS==1 && defined(_PTHREAD_H)
268 if (p.mutex) pthread_mutex_lock(p.mutex);
270 WaitForSingleObject(p.mutex,INFINITE);
275 static void greycstoration_mutex_unlock(_greycstoration_params &p) {
276 if (p.nb_threads>1) {
277 #if cimg_OS==1 && defined(_PTHREAD_H)
278 if (p.mutex) pthread_mutex_unlock(p.mutex);
280 ReleaseMutex(p.mutex);
285 static void greycstoration_mutex_destroy(_greycstoration_params &p) {
286 if (p.nb_threads>1) {
287 #if cimg_OS==1 && defined(_PTHREAD_H)
288 if (p.mutex) pthread_mutex_destroy(p.mutex);
290 CloseHandle(p.mutex);
297 static void* greycstoration_thread(void *arg) {
299 static DWORD WINAPI greycstoration_thread(void *arg) {
301 _greycstoration_params &p = *(_greycstoration_params*)arg;
302 greycstoration_mutex_lock(p);
303 const CImg<float> &mask = *(p.mask);
304 CImg<T> &source = *(p.source);
310 if (p.patch_based) source.blur_patch(p.patch_size,p.sigma_p,p.sigma_s,p.lookup_size,p.fast_approx);
311 else source.blur_anisotropic(mask,p.amplitude,p.dl,p.da,p.gauss_prec,p.interpolation,p.fast_approx);
317 CImg<T> &temporary = *(p.temporary);
318 const bool threed = (source.depth()>1);
319 const unsigned int b = p.tile_border;
320 unsigned int ctile = 0;
322 for (unsigned int z=0; z<source.depth() && !*(p.stop_request); z+=p.tile)
323 for (unsigned int y=0; y<source.height() && !*(p.stop_request); y+=p.tile)
324 for (unsigned int x=0; x<source.width() && !*(p.stop_request); x+=p.tile)
325 if (!p.nb_threads || ((ctile++)%p.nb_threads)==p.thread) {
330 xe = x1<source.width()?x1:source.width()-1,
331 ye = y1<source.height()?y1:source.height()-1,
332 ze = z1<source.depth()?z1:source.depth()-1;
333 CImg<T> img = source.get_crop(x-b,y-b,z-b,xe+b,ye+b,ze+b,true);
334 CImg<float> mask_tile = mask.is_empty()?mask:mask.get_crop(x-b,y-b,z-b,xe+b,ye+b,ze+b,true);
335 img.greycstoration_params[0] = p;
336 greycstoration_mutex_unlock(p);
337 if (p.patch_based) img.blur_patch(p.patch_size,p.sigma_p,p.sigma_s,p.lookup_size,p.fast_approx);
338 else img.blur_anisotropic(mask_tile,p.amplitude,p.dl,p.da,p.gauss_prec,p.interpolation,p.fast_approx);
339 greycstoration_mutex_lock(p);
340 temporary.draw_image(x,y,z,img.crop(b,b,b,img.width()-b,img.height()-b,img.depth()-b));
343 for (unsigned int y=0; y<source.height() && !*(p.stop_request); y+=p.tile)
344 for (unsigned int x=0; x<source.width() && !*(p.stop_request); x+=p.tile)
345 if (!p.nb_threads || ((ctile++)%p.nb_threads)==p.thread) {
349 xe = x1<source.width()?x1:source.width()-1,
350 ye = y1<source.height()?y1:source.height()-1;
351 CImg<T> img = source.get_crop(x-b,y-b,xe+b,ye+b,true);
352 CImg<float> mask_tile = mask.is_empty()?mask:mask.get_crop(x-b,y-b,xe+b,ye+b,true);
353 img.greycstoration_params[0] = p;
354 greycstoration_mutex_unlock(p);
355 if (p.patch_based) img.blur_patch(p.patch_size,p.sigma_p,p.sigma_s,p.lookup_size,p.fast_approx);
356 else img.blur_anisotropic(mask_tile,p.amplitude,p.dl,p.da,p.gauss_prec,p.interpolation,p.fast_approx);
357 temporary.draw_image(x,y,img.crop(b,b,img.width()-b,img.height()-b));
358 greycstoration_mutex_lock(p);
362 greycstoration_mutex_unlock(p);
365 if (p.nb_threads>1) {
366 bool stopflag = true;
369 for (unsigned int k=1; k<p.nb_threads; k++) if (source.greycstoration_params[k].is_running) stopflag = false;
370 if (!stopflag) cimg::wait(50);
373 if (p.counter) delete p.counter;
374 if (p.temporary) { source = *(p.temporary); delete p.temporary; }
375 if (p.stop_request) { *p.stop_request = false;
376 delete p.stop_request;}
378 p.amplitude = p.sharpness = p.anisotropy = p.alpha = p.sigma = p.gfact = p.dl = p.da = p.gauss_prec = p.sigma_s = p.sigma_p = 0;
379 p.patch_size = p.interpolation = p.lookup_size = 0;
380 p.fast_approx = false;
384 p.tile = p.tile_border = p.thread = p.nb_threads = 0;
385 greycstoration_mutex_destroy(p);
387 p.is_running = false;
390 #if cimg_OS==1 && defined(_PTHREAD_H)
401 #define cimg_plugin_greycstoration_count \
402 if (!*(greycstoration_params->stop_request)) ++(*greycstoration_params->counter); else return *this;
403 #define cimg_plugin_greycstoration_lock \
404 greycstoration_mutex_lock(greycstoration_params[0]);
405 #define cimg_plugin_greycstoration_unlock \
406 greycstoration_mutex_unlock(greycstoration_params[0]);