added adaptive threshold + fix help patches ( frame 15 )

svn path=/trunk/externals/pix_opencv/; revision=12148

18 files changed, 428 insertions, 276 deletions

diff --git a/Makefile b/Makefile
index 24c99ae..3732f4b 100644
--- a/Makefile
+++ b/Makefile
@@ -35,7 +35,7 @@ endif
 
 .SUFFIXES = $(EXTENSION)
 
-SOURCES = pix_opencv_edge.cc pix_opencv_laplace.cc pix_opencv_morphology.cc pix_opencv_distrans.cc pix_opencv_motempl.cc pix_opencv_haarcascade.cc pix_opencv_contours_boundingrect.cc pix_opencv_bgsubstract.cc pix_opencv_contours_convexity.cc pix_opencv_dft.cc pix_opencv_lk.cc pix_opencv_hist_compare.cc pix_opencv_knear.cc pix_opencv_threshold.cc pix_opencv_floodfill.cc
+SOURCES = pix_opencv_edge.cc pix_opencv_laplace.cc pix_opencv_morphology.cc pix_opencv_distrans.cc pix_opencv_motempl.cc pix_opencv_haarcascade.cc pix_opencv_contours_boundingrect.cc pix_opencv_bgsubstract.cc pix_opencv_contours_convexity.cc pix_opencv_dft.cc pix_opencv_lk.cc pix_opencv_hist_compare.cc pix_opencv_knear.cc pix_opencv_threshold.cc pix_opencv_floodfill.cc pix_opencv_athreshold.cc
 
 all: $(SOURCES:.cc=.$(EXTENSION))
 
diff --git a/pix_opencv_bgsubstract-help.pd b/pix_opencv_bgsubstract-help.pd
index cd3aa34..cfdfd55 100644
--- a/pix_opencv_bgsubstract-help.pd
+++ b/pix_opencv_bgsubstract-help.pd
@@ -2,17 +2,14 @@
 #X obj 618 -33 gemhead;
 #X obj 364 374 pix_texture;
 #X obj 364 402 square 2;
-#X obj 20 159 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
+#X obj 20 165 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 0 22 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 41 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 87 154 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,19 +17,26 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 192 276 gemwin;
+#X msg 191 223 create \, 1;
+#X msg 267 224 destroy;
+#X msg 313 196 frame 15;
+#X obj 194 186 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
-#X restore 25 203 pd gemwin;
-#X msg 25 179 destroy;
-#X text 21 159 Create window and render;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
+#X restore 25 209 pd gemwin;
+#X msg 25 185 destroy;
+#X text 21 165 Create window and render;
 #X obj 200 368 pix_texture;
 #X obj 200 396 square 2;
 #X obj 266 167 translateXYZ -2 0 0;
diff --git a/pix_opencv_contours_boundingrect-help.pd b/pix_opencv_contours_boundingrect-help.pd
index 10376d5..eadc72e 100644
--- a/pix_opencv_contours_boundingrect-help.pd
+++ b/pix_opencv_contours_boundingrect-help.pd
@@ -1,18 +1,15 @@
-#N canvas 68 50 1040 775 10;
+#N canvas 73 50 1040 775 10;
 #X obj 441 -19 gemhead;
-#X obj 365 456 pix_texture;
-#X obj 365 484 square 2;
-#X obj 21 444 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
+#X obj 364 510 pix_texture;
+#X obj 364 538 square 2;
+#X obj 25 436 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 5 49 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 41 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 92 178 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,24 +17,31 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 161 230 gemwin;
+#X msg 160 177 create \, 1;
+#X msg 236 178 destroy;
+#X msg 282 150 frame 15;
+#X obj 163 140 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
-#X restore 26 488 pd gemwin;
-#X msg 26 464 destroy;
-#X text 22 444 Create window and render;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
+#X restore 30 480 pd gemwin;
+#X msg 30 456 destroy;
+#X text 26 436 Create window and render;
 #X obj 200 368 pix_texture;
 #X obj 200 396 square 2;
 #X obj 266 167 translateXYZ -2 0 0;
 #X obj 281 199 separator;
-#X obj 344 254 cnv 15 550 180 empty empty empty 20 12 0 14 -24198 -66577
+#X obj 344 246 cnv 15 550 250 empty empty empty 20 12 0 14 -24198 -66577
 0;
 #X obj 511 -66 bng 25 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
 -1;
@@ -55,24 +59,24 @@
 #X obj 479 5 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
 ;
 #X obj 281 227 translateXYZ 4 0 0;
-#X floatatom 482 374 5 0 0 0 - - -;
-#X obj 365 406 pix_opencv_contours_boundingrect;
+#X floatatom 481 432 5 0 0 0 - - -;
+#X obj 364 464 pix_opencv_contours_boundingrect;
 #X obj 378 110 pix_invert;
 #X obj 319 135 pix_threshold;
 #X floatatom 322 103 5 0 0 0 - - -;
 #X msg 289 101 0.33;
 #X obj 234 101 loadbang;
-#X text 517 370 min area in pixels (default 1);
-#X floatatom 568 388 5 0 0 0 - - -;
-#X text 606 387 max area in pixels (default 76800);
-#X floatatom 498 542 5 0 0 0 - - -;
-#X floatatom 533 542 5 0 0 0 - - -;
-#X floatatom 570 542 5 0 0 0 - - -;
-#X floatatom 604 542 5 0 0 0 - - -;
-#X obj 495 513 unpack 0 0 0 0 0;
-#X obj 495 462 route 0 1 2 3 4;
-#X text 648 542 Xorigin Yorigin Width Height;
-#X text 555 480 For each contour detected;
+#X text 516 428 min area in pixels (default 1);
+#X floatatom 567 446 5 0 0 0 - - -;
+#X text 605 445 max area in pixels (default 76800);
+#X floatatom 497 596 5 0 0 0 - - -;
+#X floatatom 532 596 5 0 0 0 - - -;
+#X floatatom 569 596 5 0 0 0 - - -;
+#X floatatom 603 596 5 0 0 0 - - -;
+#X obj 494 567 unpack 0 0 0 0 0;
+#X obj 494 516 route 0 1 2 3 4;
+#X text 647 596 Xorigin Yorigin Width Height;
+#X text 554 534 For each contour detected;
 #X text 655 -107 It is useful as a motion tracker if you have well
 isolated silouets of the objects you want to track.;
 #X msg 385 260 mode \$1;
@@ -100,13 +104,24 @@ white areas in the input image \, it's important to set max/min values
 of the areas you want to detect to filter non interesting noise or
 areas \, also sometimes you will need to use pix_opencv_morphology
 to transform the contours of the shapes to be analyzed..;
-#X msg 490 350 clear;
-#X floatatom 598 445 5 0 0 0 - - -;
-#X text 636 446 number of contours;
+#X floatatom 597 499 5 0 0 0 - - -;
+#X text 635 500 number of contours;
 #X msg 531 87 colorspace RGBA;
 #X msg 521 66 colorspace RGB;
 #X msg 513 46 colorspace Gray;
 #X obj 562 21 loadbang;
+#X msg 462 355 nightmode \$1;
+#X obj 552 356 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
+1;
+#X obj 541 377 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
+1;
+#X obj 554 399 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
+1;
+#X msg 481 376 draw \$1;
+#X text 568 375 draw bounding rectangle ( default : on );
+#X msg 496 397 show \$1;
+#X text 581 396 draw the detected contours ( default : off );
+#X text 575 356 hide original image ( default : off );
 #X connect 0 0 21 0;
 #X connect 1 0 2 0;
 #X connect 4 0 5 0;
@@ -132,7 +147,7 @@ to transform the contours of the shapes to be analyzed..;
 #X connect 25 0 26 1;
 #X connect 26 0 1 0;
 #X connect 26 1 40 0;
-#X connect 26 2 60 0;
+#X connect 26 2 59 0;
 #X connect 27 0 28 0;
 #X connect 28 0 9 0;
 #X connect 29 0 28 1;
@@ -152,8 +167,13 @@ to transform the contours of the shapes to be analyzed..;
 #X connect 51 0 50 0;
 #X connect 52 0 53 0;
 #X connect 53 0 26 0;
-#X connect 59 0 26 0;
+#X connect 61 0 21 0;
 #X connect 62 0 21 0;
 #X connect 63 0 21 0;
-#X connect 64 0 21 0;
-#X connect 65 0 62 0;
+#X connect 64 0 61 0;
+#X connect 65 0 26 0;
+#X connect 66 0 65 0;
+#X connect 67 0 69 0;
+#X connect 68 0 71 0;
+#X connect 69 0 26 0;
+#X connect 71 0 26 0;
diff --git a/pix_opencv_contours_boundingrect.cc b/pix_opencv_contours_boundingrect.cc
index 8a21b0d..e3f124e 100644
--- a/pix_opencv_contours_boundingrect.cc
+++ b/pix_opencv_contours_boundingrect.cc
@@ -44,6 +44,9 @@ pix_opencv_contours_boundingrect :: pix_opencv_contours_boundingrect()
   rgb = NULL;
   x_ftolerance  = 5;
   x_mmove   = 10;
+  x_nightmode   = 0;
+  x_show   = 0;
+  x_draw   = 1;
   x_cmode   = CV_RETR_LIST;
   x_cmethod = CV_CHAIN_APPROX_SIMPLE;
 
@@ -131,6 +134,10 @@ void pix_opencv_contours_boundingrect :: processRGBAImage(imageStruct &image)
     
     // Convert to grayscale
     cvCvtColor(orig, gray, CV_RGBA2GRAY);
+    if ( x_nightmode )
+    {
+       cvZero( orig );
+    }
 
     CvSeq* contours;
     CvMemStorage* stor02;
@@ -178,9 +185,17 @@ void pix_opencv_contours_boundingrect :: processRGBAImage(imageStruct &image)
                oi = this->mark(rect.x, rect.y );
             }
 
-	    cvRectangle( orig, cvPoint(rect.x,rect.y), cvPoint(rect.x+rect.width,rect.y+rect.height), CV_RGB(255,0,0), 2, 8 , 0 );
-            sprintf( tindex, "%d", oi );
-            cvPutText( orig, tindex, cvPoint(rect.x,rect.y), &font, CV_RGB(255,255,255));
+            if ( x_draw )
+            {
+	      cvRectangle( orig, cvPoint(rect.x,rect.y), cvPoint(rect.x+rect.width,rect.y+rect.height), CV_RGB(255,0,0), 2, 8 , 0 );
+              sprintf( tindex, "%d", oi );
+              cvPutText( orig, tindex, cvPoint(rect.x,rect.y), &font, CV_RGB(255,255,255));
+            }
+
+            if ( x_show )
+            {
+              cvDrawContours( orig, contours, CV_RGB(255,255,255), CV_RGB(255,255,255), 0, 1, 8, cvPoint(0,0) );
+            }
 
     	    t_atom rlist[4];
             SETFLOAT(&rlist[0], oi);
@@ -242,6 +257,10 @@ void pix_opencv_contours_boundingrect :: processRGBImage(imageStruct &image)
     
     // Convert to grayscale
     cvCvtColor(rgb, gray, CV_RGB2GRAY);
+    if ( x_nightmode )
+    {
+       cvZero( rgb );
+    }
   
     CvSeq* contours;
     CvMemStorage* stor02;
@@ -289,9 +308,17 @@ void pix_opencv_contours_boundingrect :: processRGBImage(imageStruct &image)
                oi = this->mark(rect.x, rect.y );
             }
 
-	    cvRectangle( rgb, cvPoint(rect.x,rect.y), cvPoint(rect.x+rect.width,rect.y+rect.height), CV_RGB(255,0,0), 2, 8 , 0 );
-            sprintf( tindex, "%d", oi );
-            cvPutText( rgb, tindex, cvPoint(rect.x,rect.y), &font, CV_RGB(255,255,255));
+            if ( x_draw )
+            {
+	      cvRectangle( rgb, cvPoint(rect.x,rect.y), cvPoint(rect.x+rect.width,rect.y+rect.height), CV_RGB(255,0,0), 2, 8 , 0 );
+              sprintf( tindex, "%d", oi );
+              cvPutText( rgb, tindex, cvPoint(rect.x,rect.y), &font, CV_RGB(255,255,255));
+            }
+
+            if ( x_show )
+            {
+              cvDrawContours( rgb, contours, CV_RGB(255,255,255), CV_RGB(255,255,255), 0, 1, 8, cvPoint(0,0) );
+            }
 
     	    t_atom rlist[4];
             SETFLOAT(&rlist[0], oi);
@@ -359,6 +386,10 @@ void pix_opencv_contours_boundingrect :: processGrayImage(imageStruct &image)
     // http://www.cs.iit.edu/~agam/cs512/lect-notes/opencv-intro/opencv-intro.html 
     memcpy( gray->imageData, image.data, image.xsize*image.ysize );
     memcpy( cnt_img->imageData, image.data, image.xsize*image.ysize );
+    if ( x_nightmode )
+    {
+       cvZero( cnt_img );
+    }
 
     CvSeq* contours;
     CvMemStorage* stor02;
@@ -406,9 +437,17 @@ void pix_opencv_contours_boundingrect :: processGrayImage(imageStruct &image)
                oi = this->mark(rect.x, rect.y );
             }
 
-	    cvRectangle( cnt_img, cvPoint(rect.x,rect.y), cvPoint(rect.x+rect.width,rect.y+rect.height), cvScalarAll(255), 2, 8 , 0 );
-            sprintf( tindex, "%d", oi );
-            cvPutText( cnt_img, tindex, cvPoint(rect.x,rect.y), &font, cvScalarAll(255));
+            if ( x_draw )
+            {
+	      cvRectangle( cnt_img, cvPoint(rect.x,rect.y), cvPoint(rect.x+rect.width,rect.y+rect.height), cvScalarAll(255), 2, 8 , 0 );
+              sprintf( tindex, "%d", oi );
+              cvPutText( cnt_img, tindex, cvPoint(rect.x,rect.y), &font, cvScalarAll(255));
+            }
+
+            if ( x_show )
+            {
+              cvDrawContours( cnt_img, contours, CV_RGB(255,255,255), CV_RGB(255,255,255), 0, 1, 8, cvPoint(0,0) );
+            }
 
     	    t_atom rlist[4];
             SETFLOAT(&rlist[0], oi);
@@ -555,6 +594,21 @@ void pix_opencv_contours_boundingrect :: floatClearMess (void)
     }
 }
 
+void pix_opencv_contours_boundingrect :: floatNightmodeMess (float nightmode)
+{
+  if ( ((int)nightmode==1) || ((int)nightmode==0) ) x_nightmode = (int)nightmode;
+}
+
+void pix_opencv_contours_boundingrect :: floatShowMess (float show)
+{
+  if ( ((int)show==1) || ((int)show==0) ) x_show = (int)show;
+}
+
+void pix_opencv_contours_boundingrect :: floatDrawMess (float draw)
+{
+  if ( ((int)draw==1) || ((int)draw==0) ) x_draw = (int)draw;
+}
+
 /////////////////////////////////////////////////////////
 // static member function
 //
@@ -574,7 +628,13 @@ void pix_opencv_contours_boundingrect :: obj_setupCallback(t_class *classPtr)
   class_addmethod(classPtr, (t_method)&pix_opencv_contours_boundingrect::floatCMethodMessCallback,
   		  gensym("cmethod"), A_FLOAT, A_NULL);
   class_addmethod(classPtr, (t_method)&pix_opencv_contours_boundingrect::floatClearMessCallback,
-  		  gensym("clear"), A_FLOAT, A_NULL);
+  		  gensym("clear"), A_NULL);
+  class_addmethod(classPtr, (t_method)&pix_opencv_contours_boundingrect::floatNightmodeMessCallback,
+  		  gensym("nightmode"), A_FLOAT, A_NULL);
+  class_addmethod(classPtr, (t_method)&pix_opencv_contours_boundingrect::floatShowMessCallback,
+  		  gensym("show"), A_FLOAT, A_NULL);
+  class_addmethod(classPtr, (t_method)&pix_opencv_contours_boundingrect::floatDrawMessCallback,
+  		  gensym("draw"), A_FLOAT, A_NULL);
 }
 
 void pix_opencv_contours_boundingrect :: floatMaxAreaMessCallback(void *data, t_floatarg maxarea)
@@ -611,3 +671,18 @@ void pix_opencv_contours_boundingrect :: floatClearMessCallback(void *data)
 {
   GetMyClass(data)->floatClearMess();
 }
+
+void pix_opencv_contours_boundingrect :: floatNightmodeMessCallback(void *data, t_floatarg nightmode)
+{
+  GetMyClass(data)->floatNightmodeMess(nightmode);
+}
+
+void pix_opencv_contours_boundingrect :: floatShowMessCallback(void *data, t_floatarg show)
+{
+  GetMyClass(data)->floatShowMess(show);
+}
+
+void pix_opencv_contours_boundingrect :: floatDrawMessCallback(void *data, t_floatarg draw)
+{
+  GetMyClass(data)->floatDrawMess(draw);
+}
diff --git a/pix_opencv_contours_boundingrect.h b/pix_opencv_contours_boundingrect.h
index cdec706..81517b9 100644
--- a/pix_opencv_contours_boundingrect.h
+++ b/pix_opencv_contours_boundingrect.h
@@ -69,6 +69,9 @@ class GEM_EXTERN pix_opencv_contours_boundingrect : public GemPixObj
     	void	    	floatCModeMess(float maxarea);
     	void	    	floatCMethodMess(float maxarea);
     	void	    	floatClearMess(void);
+    	void	    	floatNightmodeMess(float nightmode);
+    	void	    	floatShowMess(float show);
+    	void	    	floatDrawMess(float draw);
         int             mark(float fx, float fy );
     	void	    	deleteMark(float findex);
     	// The new minimal/maximal area 
@@ -82,6 +85,9 @@ class GEM_EXTERN pix_opencv_contours_boundingrect : public GemPixObj
         int             x_found[MAX_MARKERS];
         int             x_ftolerance;
         int             x_mmove;
+        int             x_nightmode;
+        int             x_draw;
+        int             x_show;
 
         // contours retrieval mode
         int             x_cmode;
@@ -101,6 +107,9 @@ class GEM_EXTERN pix_opencv_contours_boundingrect : public GemPixObj
     	static void 	floatCModeMessCallback(void *data, t_floatarg cmode);
     	static void 	floatCMethodMessCallback(void *data, t_floatarg cmethod);
     	static void 	floatClearMessCallback(void *data);
+    	static void 	floatNightmodeMessCallback(void *data, t_floatarg nightmode);
+    	static void 	floatShowMessCallback(void *data, t_floatarg show);
+    	static void 	floatDrawMessCallback(void *data, t_floatarg draw);
 
 	/////////
 	// IplImage needed
diff --git a/pix_opencv_contours_convexity-help.pd b/pix_opencv_contours_convexity-help.pd
index 5552b48..b3fc71b 100644
--- a/pix_opencv_contours_convexity-help.pd
+++ b/pix_opencv_contours_convexity-help.pd
@@ -1,18 +1,15 @@
-#N canvas 1 49 1424 780 10;
+#N canvas -23 38 1018 740 10;
 #X obj 264 18 gemhead;
 #X obj 195 378 pix_texture;
 #X obj 195 406 square 2;
 #X obj 558 -22 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 0 22 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 41 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 87 154 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,19 +17,26 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 160 260 gemwin;
+#X msg 159 207 create \, 1;
+#X msg 235 208 destroy;
+#X msg 281 180 frame 15;
+#X obj 162 170 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
 #X restore 563 22 pd gemwin;
-#X msg 563 -2 destroy;
-#X text 559 -22 Create window and render;
+#X msg 564 0 create;
+#X text 560 -20 Create window and render;
 #X obj 31 372 pix_texture;
 #X obj 31 400 square 2;
 #X obj 97 171 translateXYZ -2 0 0;
@@ -52,7 +56,7 @@
 #X msg 342 -13 open \$1;
 #X obj 330 96 pix_film;
 #X msg 348 30 auto \$1;
-#X obj 348 12 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
+#X obj 348 12 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 1 1
 ;
 #X obj 195 263 translateXYZ 4 0 0;
 #X obj 209 114 pix_invert;
diff --git a/pix_opencv_dft-help.pd b/pix_opencv_dft-help.pd
index 39a24c4..3096cc0 100755
--- a/pix_opencv_dft-help.pd
+++ b/pix_opencv_dft-help.pd
@@ -5,14 +5,11 @@
 #X obj 9 -28 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 0 22 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 41 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 87 154 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,19 +17,26 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 160 260 gemwin;
+#X msg 159 207 create \, 1;
+#X msg 235 208 destroy;
+#X msg 281 180 frame 15;
+#X obj 162 170 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
 #X restore 14 16 pd gemwin;
-#X msg 14 -8 destroy;
-#X text 15 -26 Create window and render;
+#X msg 14 -5 destroy;
+#X text 15 -23 Create window and render;
 #X obj 200 368 pix_texture;
 #X obj 200 396 square 2;
 #X obj 367 159 translateXYZ -2 0 0;
diff --git a/pix_opencv_distrans-help.pd b/pix_opencv_distrans-help.pd
index a8e8dd7..6498fb4 100644
--- a/pix_opencv_distrans-help.pd
+++ b/pix_opencv_distrans-help.pd
@@ -1,18 +1,15 @@
-#N canvas 1 49 1424 780 10;
+#N canvas 0 0 871 658 10;
 #X obj 286 -33 gemhead;
 #X obj 363 431 pix_texture;
 #X obj 363 459 square 2;
-#X obj 20 159 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
+#X obj 21 160 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 0 22 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 41 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 87 154 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,24 +17,30 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 160 260 gemwin;
+#X msg 159 207 create \, 1;
+#X msg 235 208 destroy;
+#X msg 281 180 frame 15;
+#X obj 162 170 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
 #X restore 25 203 pd gemwin;
-#X msg 25 179 destroy;
-#X text 21 159 Create window and render;
+#X msg 26 180 create;
+#X text 22 160 Create window and render;
 #X obj 200 368 pix_texture;
 #X obj 200 396 square 2;
 #X obj 266 167 translateXYZ -2 0 0;
 #X obj 367 224 separator;
-#X floatatom 518 386 5 0 0 0 - - -;
 #X obj 335 278 cnv 15 400 150 empty empty empty 20 12 0 14 -24198 -66577
 0;
 #X obj 511 -66 bng 25 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
@@ -53,7 +56,7 @@
 #X msg 511 -17 open \$1;
 #X obj 499 92 pix_film;
 #X msg 517 26 auto \$1;
-#X obj 517 8 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
+#X obj 517 8 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 1 1
 ;
 #X msg 528 50 colorspace Grey;
 #X obj 367 253 translateXYZ 4 0 0;
@@ -74,33 +77,34 @@ video frames;
 #X text 23 80 written by lluis gomez i bigorda ( lluisgomez@hangar.org
 );
 #X text 22 41 pix_opencv_distrans : distance processing;
-#X connect 0 0 22 0;
+#X floatatom 512 384 5 0 0 0 - - -;
+#X connect 0 0 21 0;
 #X connect 1 0 2 0;
 #X connect 4 0 5 0;
 #X connect 5 0 4 0;
 #X connect 7 0 8 0;
 #X connect 9 0 7 0;
 #X connect 9 0 10 0;
-#X connect 10 0 26 0;
-#X connect 11 0 27 1;
-#X connect 13 0 20 0;
-#X connect 14 0 15 0;
-#X connect 14 1 16 0;
-#X connect 14 2 17 0;
-#X connect 18 0 19 0;
-#X connect 19 0 22 1;
+#X connect 10 0 25 0;
+#X connect 12 0 19 0;
+#X connect 13 0 14 0;
+#X connect 13 1 15 0;
+#X connect 13 2 16 0;
+#X connect 17 0 18 0;
+#X connect 18 0 21 1;
+#X connect 19 0 20 0;
 #X connect 20 0 21 0;
-#X connect 21 0 22 0;
-#X connect 22 0 9 0;
-#X connect 22 1 14 0;
-#X connect 22 2 18 0;
+#X connect 21 0 9 0;
+#X connect 21 1 13 0;
+#X connect 21 2 17 0;
+#X connect 22 0 21 0;
 #X connect 23 0 22 0;
-#X connect 24 0 23 0;
-#X connect 25 0 22 0;
-#X connect 26 0 27 0;
-#X connect 27 0 1 0;
+#X connect 24 0 21 0;
+#X connect 25 0 26 0;
+#X connect 26 0 1 0;
+#X connect 27 0 26 0;
 #X connect 28 0 27 0;
-#X connect 29 0 28 0;
-#X connect 35 0 27 0;
-#X connect 36 0 27 0;
-#X connect 37 0 27 0;
+#X connect 34 0 26 0;
+#X connect 35 0 26 0;
+#X connect 36 0 26 0;
+#X connect 40 0 26 1;
diff --git a/pix_opencv_edge-help.pd b/pix_opencv_edge-help.pd
index dfbca66..3598e54 100644
--- a/pix_opencv_edge-help.pd
+++ b/pix_opencv_edge-help.pd
@@ -5,14 +5,11 @@
 #X obj 23 230 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 0 22 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
-#X obj 67 41 route create;
+#X obj 69 37 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 87 154 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,19 +17,26 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 160 260 gemwin;
+#X msg 159 207 create \, 1;
+#X msg 235 208 destroy;
+#X msg 281 180 frame 15;
+#X obj 162 170 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
 #X restore 28 274 pd gemwin;
 #X msg 28 250 destroy;
-#X text 24 230 Create window and render;
+#X text 29 232 Create window and render;
 #X obj 266 365 pix_texture;
 #X obj 266 393 square 2;
 #X obj 266 167 translateXYZ -2 0 0;
diff --git a/pix_opencv_haarcascade-help.pd b/pix_opencv_haarcascade-help.pd
index 3aa9b81..4af36e2 100644
--- a/pix_opencv_haarcascade-help.pd
+++ b/pix_opencv_haarcascade-help.pd
@@ -1,18 +1,15 @@
-#N canvas 386 81 1091 744 10;
+#N canvas 349 81 1091 744 10;
 #X obj 266 -83 gemhead;
 #X obj 87 544 pix_texture;
 #X obj 87 577 square 2;
 #X obj 9 -74 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 0 22 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 41 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 87 154 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,18 +17,25 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 160 260 gemwin;
+#X msg 159 207 create \, 1;
+#X msg 235 208 destroy;
+#X msg 281 180 frame 15;
+#X obj 162 170 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
 #X restore 14 -30 pd gemwin;
-#X msg 14 -54 destroy;
+#X msg 14 -52 destroy;
 #X text 10 -74 Create window and render;
 #X obj 5 544 pix_texture;
 #X obj 5 572 square 2;
diff --git a/pix_opencv_hist_compare-help.pd b/pix_opencv_hist_compare-help.pd
index 17268b7..fa34135 100755
--- a/pix_opencv_hist_compare-help.pd
+++ b/pix_opencv_hist_compare-help.pd
@@ -5,14 +5,11 @@
 #X obj 9 -28 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 0 22 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 41 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 87 154 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,19 +17,26 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 160 260 gemwin;
+#X msg 159 207 create \, 1;
+#X msg 235 208 destroy;
+#X msg 281 180 frame 15;
+#X obj 162 170 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
 #X restore 14 16 pd gemwin;
 #X msg 14 -8 destroy;
-#X text 15 -26 Create window and render;
+#X text 12 -26 Create window and render;
 #X obj 216 478 pix_texture;
 #X obj 216 506 square 2;
 #X obj 367 159 translateXYZ -2 0 0;
diff --git a/pix_opencv_hist_compare.cc b/pix_opencv_hist_compare.cc
index 865b090..ccdb50c 100755
--- a/pix_opencv_hist_compare.cc
+++ b/pix_opencv_hist_compare.cc
@@ -194,14 +194,14 @@ void pix_opencv_hist_compare :: processRGBAImage(imageStruct &image)
   cvCalcHist( planes, hist, 0, 0 ); //Compute histogram
   cvNormalizeHist( hist, 1.0 );  //Normalize it
 
-  double tato[MAX_HISTOGRAMS_TO_COMPARE];
-  t_atom datalist[MAX_HISTOGRAMS_TO_COMPARE];
+  double tato[nbsaved];
+  t_atom datalist[nbsaved];
   int nearest = -1;
   double max  =  0;
 
   int n;
   if ( nbsaved > 0 )
-    for (n=0; n<MAX_HISTOGRAMS_TO_COMPARE; n++) {
+    for (n=0; n<nbsaved; n++) {
         tato[n] = cvCompareHist(hist, saved_hist[n], CV_COMP_INTERSECT);
         SETFLOAT(&datalist[n], tato[n]);
         if (tato[n]>max) {
@@ -212,7 +212,7 @@ void pix_opencv_hist_compare :: processRGBAImage(imageStruct &image)
 
   if ( nbsaved > 0 ) {
        outlet_float(m_dataout, (float)nearest);
-       outlet_list( m_measureout, 0, MAX_HISTOGRAMS_TO_COMPARE , datalist );
+       outlet_list( m_measureout, 0, nbsaved , datalist );
   } else
        outlet_float(m_dataout, -1.0);
 
@@ -326,14 +326,14 @@ void pix_opencv_hist_compare :: processRGBImage(imageStruct &image)
    cvCalcHist( planes, hist, 0, 0 ); //Compute histogram
    cvNormalizeHist( hist, 1.0 );  //Normalize it
 
-   double tato[MAX_HISTOGRAMS_TO_COMPARE];
-   t_atom datalist[MAX_HISTOGRAMS_TO_COMPARE];
+   double tato[nbsaved];
+   t_atom datalist[nbsaved];
    int nearest = -1;
    double max  =  0;
 
    int n;
    if ( nbsaved > 0 )
-      for (n=0; n<MAX_HISTOGRAMS_TO_COMPARE; n++) {
+      for (n=0; n<nbsaved; n++) {
         tato[n] = cvCompareHist(hist, saved_hist[n], CV_COMP_INTERSECT);
         SETFLOAT(&datalist[n], tato[n]);
         if (tato[n]>max) {
@@ -344,7 +344,7 @@ void pix_opencv_hist_compare :: processRGBImage(imageStruct &image)
 
   if ( nbsaved > 0 ) {
        outlet_float(m_dataout, (float)nearest);
-       outlet_list( m_measureout, 0, MAX_HISTOGRAMS_TO_COMPARE , datalist );
+       outlet_list( m_measureout, 0, nbsaved , datalist );
   } else
        outlet_float(m_dataout, -1.0);
 
@@ -464,14 +464,14 @@ void pix_opencv_hist_compare :: processGrayImage(imageStruct &image)
    cvCalcHist( planes, hist, 0, 0 ); //Compute histogram
    cvNormalizeHist( hist, 1.0 );  //Normalize it
 
-   double tato[MAX_HISTOGRAMS_TO_COMPARE];
-   t_atom datalist[MAX_HISTOGRAMS_TO_COMPARE];
+   double tato[nbsaved];
+   t_atom datalist[nbsaved];
    int nearest = -1;
    double max  =  0;
 
    int n;
    if ( nbsaved > 0 )
-      for (n=0; n<MAX_HISTOGRAMS_TO_COMPARE; n++) {
+      for (n=0; n<nbsaved; n++) {
         tato[n] = cvCompareHist(hist, saved_hist[n], CV_COMP_INTERSECT);
         SETFLOAT(&datalist[n], tato[n]);
         if (tato[n]>max) {
@@ -482,7 +482,7 @@ void pix_opencv_hist_compare :: processGrayImage(imageStruct &image)
 
    if ( nbsaved > 0 ) {
       outlet_float(m_dataout, (float)nearest);
-      outlet_list( m_measureout, 0, MAX_HISTOGRAMS_TO_COMPARE , datalist );
+      outlet_list( m_measureout, 0, nbsaved , datalist );
    } else
       outlet_float(m_dataout, -1.0);
 
diff --git a/pix_opencv_knear-help.pd b/pix_opencv_knear-help.pd
index 4620175..eb232ae 100755
--- a/pix_opencv_knear-help.pd
+++ b/pix_opencv_knear-help.pd
@@ -1,35 +1,38 @@
-#N canvas 266 117 1154 642 10;
+#N canvas 435 113 1154 642 10;
 #X obj 384 31 gemhead;
 #X obj 365 414 pix_texture;
 #X obj 365 442 square 2;
 #X obj 9 -28 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 5 49 454 304 gemwin 0;
-#X obj 131 180 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 39 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 115 143 create \, 1;
-#X msg 238 112 destroy;
-#X msg 191 141 dimen 256 128;
-#X obj 152 119 t b b;
+#X msg 156 142 dimen 256 128;
+#X obj 127 212 gemwin;
+#X msg 120 172 create \, 1;
+#X msg 208 175 destroy;
+#X msg 248 132 frame 15;
+#X obj 129 122 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 9 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
-#X connect 9 0 8 0;
-#X connect 9 1 6 0;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 5 0 6 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 1 5 0;
+#X connect 10 2 9 0;
 #X restore 14 16 pd gemwin;
 #X msg 14 -8 destroy;
-#X text 15 -26 Create window and render;
+#X text 15 -25 Create window and render;
 #X obj 200 368 pix_texture;
 #X obj 200 396 square 2;
 #X obj 367 159 translateXYZ -2 0 0;
@@ -55,14 +58,14 @@
 #X text 663 356 Distance of the incoming frame compared to the patterns
 ;
 #X obj 384 72 pix_image;
-#X msg 560 310 load /usr/local/pd/pdp_opencv/doc/plus 50;
 #X obj 365 335 pix_opencv_knear /usr/local/pd/pdp_opencv/doc/plus 50
 ;
 #X obj 592 380 print distance;
 #X obj 572 251 loadbang;
 #X obj 382 110 pix_grey;
-#X text 433 -33 load patterns \, freate the Gem window and then load
+#X text 433 -33 load patterns \, create the Gem window and then load
 a character image;
+#X msg 560 310 load /usr/local/pd/pdp_opencv/plus 50;
 #X connect 0 0 27 0;
 #X connect 1 0 2 0;
 #X connect 4 0 5 0;
@@ -75,13 +78,13 @@ a character image;
 #X connect 12 0 20 0;
 #X connect 13 0 14 0;
 #X connect 14 0 27 0;
-#X connect 15 0 29 0;
-#X connect 20 0 29 0;
-#X connect 24 0 29 0;
-#X connect 27 0 32 0;
-#X connect 28 0 29 0;
-#X connect 29 0 1 0;
-#X connect 29 1 25 0;
-#X connect 29 1 30 0;
-#X connect 31 0 20 0;
-#X connect 32 0 9 0;
+#X connect 15 0 28 0;
+#X connect 20 0 28 0;
+#X connect 24 0 28 0;
+#X connect 27 0 31 0;
+#X connect 28 0 1 0;
+#X connect 28 1 25 0;
+#X connect 28 1 29 0;
+#X connect 30 0 20 0;
+#X connect 31 0 9 0;
+#X connect 33 0 28 0;
diff --git a/pix_opencv_laplace-help.pd b/pix_opencv_laplace-help.pd
index ce65535..f287197 100644
--- a/pix_opencv_laplace-help.pd
+++ b/pix_opencv_laplace-help.pd
@@ -5,14 +5,11 @@
 #X obj 20 159 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 0 22 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 41 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 87 154 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,16 +17,23 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 171 266 gemwin;
+#X msg 164 226 create \, 1;
+#X msg 252 229 destroy;
+#X msg 292 186 frame 15;
+#X obj 173 176 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
 #X restore 25 203 pd gemwin;
 #X msg 25 179 destroy;
 #X text 21 159 Create window and render;
@@ -62,10 +66,10 @@
 #X msg 476 298 5;
 #X msg 508 298 7;
 #X text 371 280 aperture size ( default 3 );
-#X text 26 56 Written by Lluis Gomez i Bigorda ( lluisgomez@hangar.org
+#X text 25 60 Written by Lluis Gomez i Bigorda ( lluisgomez@hangar.org
 );
-#X text 26 45 used as an edge detector;
-#X text 25 32 pix_opencv_laplace : laplace filter;
+#X text 25 49 used as an edge detector;
+#X text 24 36 pix_opencv_laplace : laplace filter;
 #X connect 0 0 21 0;
 #X connect 1 0 2 0;
 #X connect 4 0 5 0;
diff --git a/pix_opencv_morphology-help.pd b/pix_opencv_morphology-help.pd
index d2532e4..a47ee3a 100644
--- a/pix_opencv_morphology-help.pd
+++ b/pix_opencv_morphology-help.pd
@@ -5,14 +5,11 @@
 #X obj 36 256 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 0 22 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 41 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 87 154 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,16 +17,23 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 171 266 gemwin;
+#X msg 164 226 create \, 1;
+#X msg 252 229 destroy;
+#X msg 292 186 frame 15;
+#X obj 173 176 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
 #X restore 43 300 pd gemwin;
 #X msg 43 276 destroy;
 #X text 39 256 Create window and render;
@@ -69,7 +73,7 @@
 #X text 524 291 switch open/close and erode/dilate modes;
 #X text 528 375 number of iterations -10/+10 (be carefull);
 #X obj 361 405 pix_opencv_morphology;
-#X text 467 493 written by Lluis Gomez i Bigorda ( lluisgomez@hangar.org
+#X text 468 494 written by Lluis Gomez i Bigorda ( lluisgomez@hangar.org
 );
 #X text 468 455 pdp_opencv_morphology : morphology filter ( erosion
 / dilatation );
diff --git a/pix_opencv_motempl-help.pd b/pix_opencv_motempl-help.pd
index cfd1bbf..b1ac6d0 100644
--- a/pix_opencv_motempl-help.pd
+++ b/pix_opencv_motempl-help.pd
@@ -1,18 +1,15 @@
-#N canvas 1 49 1424 780 10;
+#N canvas 1 49 1025 780 10;
 #X obj 398 31 gemhead;
 #X obj 373 555 pix_texture;
 #X obj 373 583 square 2;
 #X obj 37 457 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 0 22 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 41 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 87 154 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,19 +17,26 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 171 266 gemwin;
+#X msg 164 226 create \, 1;
+#X msg 252 229 destroy;
+#X msg 292 186 frame 15;
+#X obj 173 176 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
 #X restore 42 501 pd gemwin;
 #X msg 42 477 destroy;
-#X text 38 457 Create window and render;
+#X text 39 460 Create window and render;
 #X obj 200 368 pix_texture;
 #X obj 200 396 square 2;
 #X obj 266 167 translateXYZ -2 0 0;
diff --git a/pix_opencv_motempl.cc b/pix_opencv_motempl.cc
index 29cded9..cde22b5 100644
--- a/pix_opencv_motempl.cc
+++ b/pix_opencv_motempl.cc
@@ -37,6 +37,7 @@ pix_opencv_motempl :: pix_opencv_motempl()
   m_dataout = outlet_new(this->x_obj, 0);
 
   mhi_duration = 1.0;
+  aperture = 3;
   diff_threshold = 30;
   last = 0;
   comp_xsize  = 0;
diff --git a/pix_opencv_threshold-help.pd b/pix_opencv_threshold-help.pd
index f924aea..19c1cae 100755
--- a/pix_opencv_threshold-help.pd
+++ b/pix_opencv_threshold-help.pd
@@ -1,18 +1,15 @@
-#N canvas 1 49 1424 780 10;
+#N canvas 1 49 820 711 10;
 #X obj 277 -24 gemhead;
 #X obj 182 509 pix_texture;
 #X obj 182 537 square 2;
 #X obj 554 196 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
 0;
 #N canvas 0 22 454 304 gemwin 0;
-#X obj 132 136 gemwin;
 #X obj 67 89 outlet;
 #X obj 67 10 inlet;
 #X obj 67 41 route create;
 #X msg 67 70 set destroy;
 #X msg 182 68 set create;
-#X msg 132 112 create \, 1;
-#X msg 238 112 destroy;
 #N canvas 87 154 247 179 Gem.init 0;
 #X obj 118 46 loadbang;
 #X msg 118 81 reset;
@@ -20,18 +17,25 @@
 #X connect 0 0 1 0;
 #X connect 1 0 2 0;
 #X restore 289 80 pd Gem.init;
+#X obj 171 266 gemwin;
+#X msg 164 226 create \, 1;
+#X msg 252 229 destroy;
+#X msg 292 186 frame 15;
+#X obj 173 176 t b b b;
+#X connect 1 0 2 0;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
-#X connect 3 0 6 0;
-#X connect 3 1 5 0;
-#X connect 3 1 7 0;
-#X connect 4 0 1 0;
-#X connect 5 0 1 0;
-#X connect 6 0 0 0;
-#X connect 7 0 0 0;
-#X connect 8 0 0 0;
+#X connect 2 0 10 0;
+#X connect 2 1 4 0;
+#X connect 2 1 8 0;
+#X connect 3 0 0 0;
+#X connect 4 0 0 0;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 6 0;
+#X connect 10 0 7 0;
+#X connect 10 2 9 0;
 #X restore 564 240 pd gemwin;
-#X msg 564 222 destroy;
+#X msg 564 222 create;
 #X obj 29 508 pix_texture;
 #X obj 29 536 square 2;
 #X obj 158 168 translateXYZ -2 0 0;
@@ -54,7 +58,7 @@
 #X obj 177 275 translateXYZ 4 0 0;
 #X obj 178 298 cnv 15 600 180 empty empty empty 20 12 0 14 -4034 -66577
 0;
-#X text 562 202 Create window and render;
+#X text 562 199 Create window and render;
 #X floatatom 306 359 5 0 0 0 - - -;
 #X msg 490 438 mode \$1;
 #X floatatom 260 340 5 0 0 0 - - -;