10 files changed, 436 insertions, 386 deletions

diff --git a/Makefile.in b/Makefile.in
index 50b6bc3..c85b59e 100755
--- a/Makefile.in
+++ b/Makefile.in
@@ -16,7 +16,7 @@ all: pix_preview.pd_linux
 
 pix_preview.pd_linux: pix_preview.o 
 	rm -f pix_preview.pd_linux
-	gcc -Wl,--export-dynamic -shared -o pix_preview.pd_linux pix_preview.o $(LIBS)
+	gcc -export_dynamic -shared -o pix_preview.pd_linux pix_preview.o $(LIBS)
 
 clean:
 	rm -f *.o
diff --git a/pix_opencv_contours_convexity-help.pd b/pix_opencv_contours_convexity-help.pd
index 52cc7cc..5552b48 100644
--- a/pix_opencv_contours_convexity-help.pd
+++ b/pix_opencv_contours_convexity-help.pd
@@ -1,8 +1,8 @@
-#N canvas 0 25 1257 669 10;
-#X obj 286 -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
+#N canvas 1 49 1424 780 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;
@@ -30,82 +30,92 @@
 #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 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 obj 346 281 cnv 15 255 67 empty empty empty 20 12 0 14 -24198 -66577
+#X restore 563 22 pd gemwin;
+#X msg 563 -2 destroy;
+#X text 559 -22 Create window and render;
+#X obj 31 372 pix_texture;
+#X obj 31 400 square 2;
+#X obj 97 171 translateXYZ -2 0 0;
+#X obj 198 228 separator;
+#X obj 177 285 cnv 15 255 67 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
+#X obj 342 -62 bng 25 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
 -1;
-#X obj 524 128 unpack 0 0 0;
-#X floatatom 514 151 5 0 0 3 length - -;
-#X floatatom 563 151 5 0 0 3 width - -;
-#X floatatom 613 151 5 0 0 3 height - -;
-#X obj 568 109 bng 15 250 50 0 empty empty end_reached 20 7 0 10 -262144
+#X obj 355 132 unpack 0 0 0;
+#X floatatom 345 155 5 0 0 3 length - -;
+#X floatatom 394 155 5 0 0 3 width - -;
+#X floatatom 444 155 5 0 0 3 height - -;
+#X obj 399 113 bng 15 250 50 0 empty empty end_reached 20 7 0 10 -262144
 -1 -1;
-#X floatatom 550 74 5 0 10000 1 frame# - -;
-#X obj 511 -37 openpanel;
-#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 floatatom 381 78 5 0 10000 1 frame# - -;
+#X obj 342 -33 openpanel;
+#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 364 259 translateXYZ 4 0 0;
-#X obj 378 110 pix_invert;
-#X obj 319 135 pix_threshold;
-#X floatatom 425 142 5 0 0 0 - - -;
-#X msg 441 191 0.33;
-#X obj 479 192 loadbang;
-#X msg 528 50 colorspace RGBA;
-#X obj 364 324 pix_opencv_contours_convexity;
-#X floatatom 100 631 5 0 0 0 - - -;
-#X floatatom 135 631 5 0 0 0 - - -;
-#X floatatom 165 612 5 0 0 0 - - -;
-#X floatatom 199 612 5 0 0 0 - - -;
-#X obj 569 449 route 0 1 2 3 4;
-#X obj 134 567 unpack 0 0 0 0 0 0;
-#X floatatom 229 593 5 0 0 0 - - -;
-#X floatatom 263 593 5 0 0 0 - - -;
-#X text 679 450 For each convexity defect in our contour;
-#X text 173 632 Start point (X -Y);
-#X text 237 612 Depth point (X -Y);
-#X text 302 594 End point (X -Y);
-#X floatatom 408 631 5 0 0 0 - - -;
-#X floatatom 443 631 5 0 0 0 - - -;
-#X floatatom 473 612 5 0 0 0 - - -;
-#X floatatom 507 612 5 0 0 0 - - -;
-#X obj 442 567 unpack 0 0 0 0 0 0;
-#X floatatom 537 593 5 0 0 0 - - -;
-#X floatatom 571 593 5 0 0 0 - - -;
-#X text 481 632 Start point (X -Y);
-#X text 545 612 Depth point (X -Y);
-#X text 610 594 End point (X -Y);
-#X floatatom 726 638 5 0 0 0 - - -;
-#X floatatom 761 638 5 0 0 0 - - -;
-#X floatatom 791 619 5 0 0 0 - - -;
-#X floatatom 825 619 5 0 0 0 - - -;
-#X obj 760 574 unpack 0 0 0 0 0 0;
-#X floatatom 855 600 5 0 0 0 - - -;
-#X floatatom 889 600 5 0 0 0 - - -;
-#X text 799 639 Start point (X -Y);
-#X text 863 619 Depth point (X -Y);
-#X text 928 601 End point (X -Y);
-#X floatatom 1034 638 5 0 0 0 - - -;
-#X floatatom 1069 638 5 0 0 0 - - -;
-#X floatatom 1099 619 5 0 0 0 - - -;
-#X floatatom 1133 619 5 0 0 0 - - -;
-#X obj 1068 574 unpack 0 0 0 0 0 0;
-#X floatatom 1163 600 5 0 0 0 - - -;
-#X floatatom 1197 600 5 0 0 0 - - -;
-#X text 1107 639 Start point (X -Y);
-#X text 1171 619 Depth point (X -Y);
-#X text 1236 601 End point (X -Y);
-#X floatatom 470 385 5 0 0 0 - - -;
-#X text 466 400 number convexity defects;
+#X obj 195 263 translateXYZ 4 0 0;
+#X obj 209 114 pix_invert;
+#X obj 150 139 pix_threshold;
+#X floatatom 256 146 5 0 0 0 - - -;
+#X msg 272 195 0.33;
+#X obj 310 196 loadbang;
+#X msg 359 54 colorspace RGBA;
+#X obj 195 328 pix_opencv_contours_convexity;
+#X floatatom 286 614 5 0 0 0 - - -;
+#X floatatom 321 614 5 0 0 0 - - -;
+#X floatatom 351 595 5 0 0 0 - - -;
+#X floatatom 385 595 5 0 0 0 - - -;
+#X obj 393 375 route 0 1 2 3 4;
+#X obj 320 550 unpack 0 0 0 0 0 0;
+#X floatatom 415 576 5 0 0 0 - - -;
+#X floatatom 449 576 5 0 0 0 - - -;
+#X text 495 378 For each convexity defect in our contour;
+#X text 359 615 Start point (X -Y);
+#X text 423 595 Depth point (X -Y);
+#X text 488 577 End point (X -Y);
+#X floatatom 298 517 5 0 0 0 - - -;
+#X floatatom 333 517 5 0 0 0 - - -;
+#X floatatom 363 498 5 0 0 0 - - -;
+#X floatatom 397 498 5 0 0 0 - - -;
+#X obj 332 453 unpack 0 0 0 0 0 0;
+#X floatatom 427 479 5 0 0 0 - - -;
+#X floatatom 461 479 5 0 0 0 - - -;
+#X text 371 518 Start point (X -Y);
+#X text 435 498 Depth point (X -Y);
+#X text 500 480 End point (X -Y);
+#X floatatom 616 524 5 0 0 0 - - -;
+#X floatatom 651 524 5 0 0 0 - - -;
+#X floatatom 681 505 5 0 0 0 - - -;
+#X floatatom 715 505 5 0 0 0 - - -;
+#X obj 650 460 unpack 0 0 0 0 0 0;
+#X floatatom 745 486 5 0 0 0 - - -;
+#X floatatom 779 486 5 0 0 0 - - -;
+#X text 689 525 Start point (X -Y);
+#X text 753 505 Depth point (X -Y);
+#X text 818 487 End point (X -Y);
+#X floatatom 601 621 5 0 0 0 - - -;
+#X floatatom 636 621 5 0 0 0 - - -;
+#X floatatom 666 602 5 0 0 0 - - -;
+#X floatatom 700 602 5 0 0 0 - - -;
+#X obj 635 557 unpack 0 0 0 0 0 0;
+#X floatatom 730 583 5 0 0 0 - - -;
+#X floatatom 764 583 5 0 0 0 - - -;
+#X text 674 622 Start point (X -Y);
+#X text 738 602 Depth point (X -Y);
+#X text 803 584 End point (X -Y);
+#X floatatom 301 389 5 0 0 0 - - -;
+#X text 297 404 number convexity defects;
+#X text 505 194 pix_opencv_contours_convexity :: Finds convexity defects
+of the bigest contour of a binary image.;
+#X text 504 230 This object considers a contour to be analyzed any
+group of white pixels in a black background \, for this reason you
+will find useful to use pix_threshold to obtain a correct input for
+pix_opencv_contours_boundingrect.;
+#X text 505 283 pix_opencv_contours_boundingrect works detecting the
+bigest white area in the input image \, sometimes you will need to
+use pix_opencv_morphology to transform the contours of the shape to
+be analyzed..;
 #X connect 0 0 21 0;
 #X connect 1 0 2 0;
 #X connect 4 0 5 0;
diff --git a/pix_opencv_distrans-help.pd b/pix_opencv_distrans-help.pd
index b8b7b6f..a8e8dd7 100644
--- a/pix_opencv_distrans-help.pd
+++ b/pix_opencv_distrans-help.pd
@@ -1,7 +1,7 @@
-#N canvas 545 127 691 547 10;
+#N canvas 1 49 1424 780 10;
 #X obj 286 -33 gemhead;
-#X obj 364 374 pix_texture;
-#X obj 364 402 square 2;
+#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
 0;
 #N canvas 0 22 454 304 gemwin 0;
@@ -33,14 +33,12 @@
 #X restore 25 203 pd gemwin;
 #X msg 25 179 destroy;
 #X text 21 159 Create window and render;
-#X text 64 81 greys out all pixels (but pixel-values are still in RGBA)
-;
 #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 519 329 5 0 0 0 - - -;
-#X obj 499 -71 cnv 15 155 250 empty empty empty 20 12 0 14 -24198 -66577
+#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
 -1;
@@ -55,49 +53,54 @@
 #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 1 1
+#X obj 517 8 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
 ;
 #X msg 528 50 colorspace Grey;
-#X obj 364 259 translateXYZ 4 0 0;
-#X obj 360 329 pix_opencv_distrans;
-#X msg 569 217 voronoi \$1;
-#X obj 660 217 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
+#X obj 367 253 translateXYZ 4 0 0;
+#X obj 359 386 pix_opencv_distrans;
+#X msg 429 293 voronoi \$1;
+#X obj 520 293 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
 1;
-#X text 679 217 switch Voronoi diagram mode on/off;
-#X text 628 243 use 3x3 mask;
-#X text 638 262 use 5x5 mask;
-#X text 644 281 use precise distance transform;
-#X text 560 327 edge threshold;
-#X msg 591 281 mask 0;
-#X msg 581 262 mask 5;
-#X msg 571 242 mask 3;
-#X connect 0 0 23 0;
+#X text 539 293 switch Voronoi diagram mode on/off;
+#X text 488 319 use 3x3 mask;
+#X text 498 338 use 5x5 mask;
+#X text 504 357 use precise distance transform;
+#X text 559 384 edge threshold;
+#X msg 451 357 mask 0;
+#X msg 441 338 mask 5;
+#X msg 431 318 mask 3;
+#X text 22 55 it's a morphology filter that can be used to preprocess
+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 connect 1 0 2 0;
 #X connect 4 0 5 0;
 #X connect 5 0 4 0;
-#X connect 8 0 9 0;
-#X connect 10 0 8 0;
-#X connect 10 0 11 0;
-#X connect 11 0 27 0;
-#X connect 12 0 28 1;
-#X connect 14 0 21 0;
-#X connect 15 0 16 0;
-#X connect 15 1 17 0;
-#X connect 15 2 18 0;
-#X connect 19 0 20 0;
-#X connect 20 0 23 1;
+#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 20 0 21 0;
 #X connect 21 0 22 0;
-#X connect 22 0 23 0;
-#X connect 23 0 10 0;
-#X connect 23 1 15 0;
-#X connect 23 2 19 0;
+#X connect 22 0 9 0;
+#X connect 22 1 14 0;
+#X connect 22 2 18 0;
+#X connect 23 0 22 0;
 #X connect 24 0 23 0;
-#X connect 25 0 24 0;
-#X connect 26 0 23 0;
-#X connect 27 0 28 0;
-#X connect 28 0 1 0;
+#X connect 25 0 22 0;
+#X connect 26 0 27 0;
+#X connect 27 0 1 0;
+#X connect 28 0 27 0;
 #X connect 29 0 28 0;
-#X connect 30 0 29 0;
-#X connect 36 0 28 0;
-#X connect 37 0 28 0;
-#X connect 38 0 28 0;
+#X connect 35 0 27 0;
+#X connect 36 0 27 0;
+#X connect 37 0 27 0;
diff --git a/pix_opencv_edge-help.pd b/pix_opencv_edge-help.pd
index ce9f355..dfbca66 100644
--- a/pix_opencv_edge-help.pd
+++ b/pix_opencv_edge-help.pd
@@ -1,8 +1,8 @@
-#N canvas 510 70 691 547 10;
+#N canvas 139 94 805 652 10;
 #X obj 286 -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 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;
@@ -30,14 +30,14 @@
 #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 obj 200 368 pix_texture;
-#X obj 200 396 square 2;
+#X restore 28 274 pd gemwin;
+#X msg 28 250 destroy;
+#X text 24 230 Create window and render;
+#X obj 266 365 pix_texture;
+#X obj 266 393 square 2;
 #X obj 266 167 translateXYZ -2 0 0;
 #X obj 367 224 separator;
-#X obj 346 281 cnv 15 255 67 empty empty empty 20 12 0 14 -24198 -66577
+#X obj 347 281 cnv 15 300 67 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;
@@ -52,13 +52,16 @@
 #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 1 1
+#X obj 517 8 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
 ;
 #X msg 528 50 colorspace Grey;
 #X obj 364 259 translateXYZ 4 0 0;
 #X obj 364 297 pix_opencv_edge;
 #X floatatom 493 296 5 0 0 0 - - -;
 #X text 536 295 edge threshold;
+#X text 18 86 written by lluis gomez i bigorda ( lluisgomez@hangar.org
+);
+#X text 19 70 pix_opencv_edge : edge detection filter;
 #X connect 0 0 21 0;
 #X connect 1 0 2 0;
 #X connect 4 0 5 0;
diff --git a/pix_opencv_haarcascade-help.pd b/pix_opencv_haarcascade-help.pd
index 1c46f66..3aa9b81 100644
--- a/pix_opencv_haarcascade-help.pd
+++ b/pix_opencv_haarcascade-help.pd
@@ -1,4 +1,4 @@
-#N canvas 197 73 1091 744 10;
+#N canvas 386 81 1091 744 10;
 #X obj 266 -83 gemhead;
 #X obj 87 544 pix_texture;
 #X obj 87 577 square 2;
@@ -33,8 +33,8 @@
 #X restore 14 -30 pd gemwin;
 #X msg 14 -54 destroy;
 #X text 10 -74 Create window and render;
-#X obj -86 241 pix_texture;
-#X obj -86 269 square 2;
+#X obj 5 544 pix_texture;
+#X obj 5 572 square 2;
 #X obj 37 160 translateXYZ -2 0 0;
 #X obj 85 247 cnv 15 650 250 empty empty empty 20 12 0 14 -24198 -66577
 0;
@@ -92,8 +92,6 @@ the subsequent scans (default 1.1);
 #X text 197 503 number of objects detected;
 #X text 399 -22 used for face detection by default;
 #X text 396 -10 ( load haarscascase_frontalface_alt.xml );
-#X text 401 -47 pix_opencv_haarscasccade : object recognition based
-on Haar's algorithm ( decision tree algorithm );
 #X text 400 6 Written by Lluis Gomez i Bigorda ( lluisgomez@hangar.org
 );
 #X text 399 18 and Yves Degoyon ( ydegoyon@gmail.com );
@@ -106,6 +104,8 @@ on Haar's algorithm ( decision tree algorithm );
 #X text 265 432 clear markers history;
 #X text 217 282 Mode of operation. Currently the only flag that may
 be specified is CV_HAAR_DO_CANNY_PRUNING ( 0 );
+#X text 401 -47 pix_opencv_haarscasccade : object recognition based
+on Haar's cascade algorithm;
 #X connect 0 0 16 0;
 #X connect 1 0 2 0;
 #X connect 4 0 5 0;
@@ -151,6 +151,6 @@ be specified is CV_HAAR_DO_CANNY_PRUNING ( 0 );
 #X connect 48 0 29 0;
 #X connect 50 0 29 0;
 #X connect 51 0 50 0;
-#X connect 62 0 29 0;
-#X connect 63 0 62 0;
-#X connect 64 0 29 0;
+#X connect 61 0 29 0;
+#X connect 62 0 61 0;
+#X connect 63 0 29 0;
diff --git a/pix_opencv_laplace-help.pd b/pix_opencv_laplace-help.pd
index 4d2a88a..ce65535 100644
--- a/pix_opencv_laplace-help.pd
+++ b/pix_opencv_laplace-help.pd
@@ -1,4 +1,4 @@
-#N canvas 456 80 691 547 10;
+#N canvas 338 215 691 547 10;
 #X obj 286 -33 gemhead;
 #X obj 364 374 pix_texture;
 #X obj 364 402 square 2;
@@ -33,14 +33,11 @@
 #X restore 25 203 pd gemwin;
 #X msg 25 179 destroy;
 #X text 21 159 Create window and render;
-#X text 64 81 greys out all pixels (but pixel-values are still in RGBA)
-;
 #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 493 296 5 0 0 0 - - -;
-#X obj 499 -71 cnv 15 155 250 empty empty empty 20 12 0 14 -24198 -66577
+#X obj 337 281 cnv 15 200 70 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;
@@ -59,29 +56,41 @@
 ;
 #X msg 528 50 colorspace Grey;
 #X obj 364 259 translateXYZ 4 0 0;
-#X obj 364 297 pix_opencv_laplace;
-#X connect 0 0 23 0;
+#X obj 364 323 pix_opencv_laplace;
+#X msg 409 298 1;
+#X msg 443 298 3;
+#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 26 45 used as an edge detector;
+#X text 25 32 pix_opencv_laplace : laplace filter;
+#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 8 0 9 0;
-#X connect 10 0 8 0;
-#X connect 10 0 11 0;
-#X connect 11 0 27 0;
-#X connect 12 0 28 1;
-#X connect 14 0 21 0;
-#X connect 15 0 16 0;
-#X connect 15 1 17 0;
-#X connect 15 2 18 0;
+#X connect 7 0 8 0;
+#X connect 9 0 7 0;
+#X connect 9 0 10 0;
+#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 23 1;
-#X connect 21 0 22 0;
-#X connect 22 0 23 0;
-#X connect 23 0 10 0;
-#X connect 23 1 15 0;
-#X connect 23 2 19 0;
-#X connect 24 0 23 0;
-#X connect 25 0 24 0;
-#X connect 26 0 23 0;
-#X connect 27 0 28 0;
-#X connect 28 0 1 0;
+#X connect 20 0 21 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 21 0;
+#X connect 25 0 26 0;
+#X connect 26 0 1 0;
+#X connect 27 0 26 1;
+#X connect 28 0 26 1;
+#X connect 29 0 26 1;
+#X connect 30 0 26 1;
diff --git a/pix_opencv_morphology-help.pd b/pix_opencv_morphology-help.pd
index dab346c..d2532e4 100644
--- a/pix_opencv_morphology-help.pd
+++ b/pix_opencv_morphology-help.pd
@@ -1,8 +1,8 @@
-#N canvas 512 117 691 547 10;
+#N canvas 56 110 846 641 10;
 #X obj 286 -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 359 468 pix_texture;
+#X obj 359 496 square 2;
+#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;
@@ -30,16 +30,14 @@
 #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 text 64 81 greys out all pixels (but pixel-values are still in RGBA)
-;
-#X obj 200 368 pix_texture;
-#X obj 200 396 square 2;
+#X restore 43 300 pd gemwin;
+#X msg 43 276 destroy;
+#X text 39 256 Create window and render;
+#X obj 263 468 pix_texture;
+#X obj 263 496 square 2;
 #X obj 266 167 translateXYZ -2 0 0;
 #X obj 367 224 separator;
-#X obj 499 -71 cnv 15 155 250 empty empty empty 20 12 0 14 -24198 -66577
+#X obj 356 285 cnv 15 450 150 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
 -1;
@@ -54,50 +52,55 @@
 #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 1 1
+#X obj 517 8 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
 ;
 #X msg 528 50 colorspace Grey;
 #X obj 364 259 translateXYZ 4 0 0;
-#X floatatom 584 336 5 0 0 0 - - -;
-#X obj 650 228 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
+#X floatatom 475 377 5 0 0 0 - - -;
+#X obj 501 291 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
 1;
-#X msg 571 273 shape 2;
-#X msg 561 253 shape 1;
-#X msg 581 292 shape 3;
-#X msg 559 228 mode \$1;
-#X text 618 254 use rectangle structuring element;
-#X text 636 289 use cross-shaped structuring element;
-#X text 630 271 use elliptic structuring element;
-#X text 669 228 switch open/close and erode/dilate modes;
-#X text 623 337 number of iterations -10/+10 (be carefull);
-#X obj 360 329 pix_opencv_morphology;
-#X connect 0 0 22 0;
+#X msg 459 335 shape 2;
+#X msg 449 315 shape 1;
+#X msg 469 354 shape 3;
+#X msg 443 291 mode \$1;
+#X text 506 316 use rectangle structuring element;
+#X text 524 351 use cross-shaped structuring element;
+#X text 518 333 use elliptic structuring element;
+#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 468 455 pdp_opencv_morphology : morphology filter ( erosion
+/ dilatation );
+#X text 468 480 used as a filter to focus on bright or dark zones;
+#X connect 0 0 21 0;
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 #X connect 20 0 21 0;
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+#X connect 30 0 37 0;
+#X connect 31 0 37 0;
+#X connect 37 0 1 0;
diff --git a/pix_opencv_motempl-help.pd b/pix_opencv_motempl-help.pd
index 9652bb5..cfd1bbf 100644
--- a/pix_opencv_motempl-help.pd
+++ b/pix_opencv_motempl-help.pd
@@ -1,8 +1,8 @@
-#N canvas 512 26 691 638 10;
-#X obj 286 -33 gemhead;
+#N canvas 1 49 1424 780 10;
+#X obj 398 31 gemhead;
 #X obj 373 555 pix_texture;
 #X obj 373 583 square 2;
-#X obj 20 159 cnv 15 220 70 empty empty empty 20 12 0 14 -195568 -66577
+#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;
@@ -30,33 +30,31 @@
 #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 text 64 81 greys out all pixels (but pixel-values are still in RGBA)
-;
+#X restore 42 501 pd gemwin;
+#X msg 42 477 destroy;
+#X text 38 457 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 364 205 separator;
-#X obj 342 269 cnv 15 357 251 empty empty empty 20 12 0 14 -24198 -66577
+#X obj 342 269 cnv 15 550 251 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
+#X obj 474 -37 bng 25 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
 -1;
-#X obj 524 128 unpack 0 0 0;
-#X floatatom 514 151 5 0 0 3 length - -;
-#X floatatom 563 151 5 0 0 3 width - -;
-#X floatatom 613 151 5 0 0 3 height - -;
-#X obj 568 109 bng 15 250 50 0 empty empty end_reached 20 7 0 10 -262144
+#X obj 487 157 unpack 0 0 0;
+#X floatatom 477 180 5 0 0 3 length - -;
+#X floatatom 526 180 5 0 0 3 width - -;
+#X floatatom 576 180 5 0 0 3 height - -;
+#X obj 531 138 bng 15 250 50 0 empty empty end_reached 20 7 0 10 -262144
 -1 -1;
-#X floatatom 550 74 5 0 10000 1 frame# - -;
-#X obj 511 -37 openpanel;
-#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 1 1
+#X floatatom 513 103 5 0 10000 1 frame# - -;
+#X obj 474 -8 openpanel;
+#X msg 474 12 open \$1;
+#X obj 462 121 pix_film;
+#X msg 480 55 auto \$1;
+#X obj 480 37 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
 ;
-#X msg 528 50 colorspace Grey;
+#X msg 491 79 colorspace Grey;
 #X obj 361 240 translateXYZ 4 0 0;
 #X obj 504 533 route -1 0 1 2 3 4;
 #X floatatom 507 613 5 0 0 0 - - -;
@@ -82,78 +80,89 @@
 #X text 701 610 Xcenter Ycenter Width Height Angle;
 #X text 722 661 Xcenter Ycenter Width Height Angle;
 #X text 769 717 Xcenter Ycenter Width Height Angle;
-#X floatatom 496 423 5 0 0 0 - - -;
-#X floatatom 557 385 5 0 0 0 - - -;
-#X text 536 425 Threshold value. (default 30);
-#X text 599 384 Maximal duration of motion track in seconds. (default
-1);
-#X text 561 403 xxx;
-#X msg 441 383 mhi_duration \$1;
-#X floatatom 597 297 5 0 0 0 - - -;
-#X msg 442 295 max_time_delta \$1;
-#X floatatom 597 320 5 0 0 0 - - -;
-#X msg 442 318 min_time_delta \$1;
-#X floatatom 596 349 5 0 0 0 - - -;
-#X msg 441 347 frame_buffer_num \$1;
-#X floatatom 523 441 5 0 0 0 - - -;
-#X floatatom 534 460 5 0 0 0 - - -;
-#X text 574 462 Max size of the motion component (default 500);
-#X text 564 441 Min size of the motion component (default 50);
-#X text 638 348 Number of frames in the buffer. (default 4);
-#X text 639 296 Max time delta in seconds. (default 0.5);
-#X text 639 319 Min time delta in seconds. (default 0.05);
+#X floatatom 487 393 5 0 0 0 - - -;
+#X floatatom 520 367 5 0 0 0 - - -;
+#X text 527 395 Threshold value. (default 30);
+#X msg 415 366 mhi_duration \$1;
+#X floatatom 508 296 5 0 0 0 - - -;
+#X msg 393 295 max_time_delta \$1;
+#X floatatom 517 320 5 0 0 0 - - -;
+#X msg 400 317 min_time_delta \$1;
+#X floatatom 541 344 5 0 0 0 - - -;
+#X msg 410 341 frame_buffer_num \$1;
+#X floatatom 514 411 5 0 0 0 - - -;
+#X floatatom 525 430 5 0 0 0 - - -;
+#X text 565 432 Max size of the motion component (default 500);
+#X text 555 411 Min size of the motion component (default 50);
+#X text 578 342 Number of frames in the buffer. (default 4);
+#X text 547 294 Max time delta in seconds. (default 0.5);
+#X text 558 319 Min time delta in seconds. (default 0.05);
 #X obj 371 466 pix_opencv_motempl;
-#X connect 0 0 22 0;
+#X msg 374 274 aperture \$1;
+#X text 550 275 aperture ( 3 \, 5 or 7 \, default 3 );
+#X msg 454 274 3;
+#X msg 487 274 5;
+#X msg 518 274 7;
+#X text 557 368 Maximal duration of motion track in seconds;
+#X text 24 88 written by Lluis Gomez i Bigorda ( lluisgomez@hangar.org
+);
+#X text 26 64 pix_opencv_motempl : opencv motion detection based on
+movement history;
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 #X connect 1 0 2 0;
 #X connect 4 0 5 0;
 #X connect 5 0 4 0;
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 #X connect 20 0 21 0;
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+#X connect 21 0 9 0;
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 #X connect 23 0 22 0;
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 #X connect 40 4 43 0;
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diff --git a/pix_opencv_motempl.cc b/pix_opencv_motempl.cc
index 48f6be6..6e309a8 100644
--- a/pix_opencv_motempl.cc
+++ b/pix_opencv_motempl.cc
@@ -36,21 +36,21 @@ pix_opencv_motempl :: pix_opencv_motempl()
   inlet_new(this->x_obj, &this->x_obj->ob_pd, gensym("float"), gensym("max_size"));
   m_dataout = outlet_new(this->x_obj, 0);
 
-  mhi_duration = 1;
+  mhi_duration = 1.0;
   diff_threshold = 30;
   last = 0;
   comp_xsize  = 0;
   comp_ysize  = 0;
 
-    // various tracking parameters (in seconds)
-    max_time_delta = 0.5;
-    min_time_delta = 0.05;
-    // number of cyclic frame buffer used for motion detection
-    // (should, probably, depend on FPS)
-    frame_buffer_num = 4;
+  // various tracking parameters (in seconds)
+  max_time_delta = 0.5;
+  min_time_delta = 0.05;
+  // number of cyclic frame buffer used for motion detection
+  // (should, probably, depend on FPS)
+  frame_buffer_num = 4;
 
-    min_size=50;
-    max_size=500; 
+  min_size=50;
+  max_size=500; 
 
   img = NULL;
   motion = NULL;
@@ -169,7 +169,7 @@ void pix_opencv_motempl :: processRGBAImage(imageStruct &image)
     cvCvtPlaneToPix( mask, 0, 0, 0, motion );
 
     // calculate motion gradient orientation and valid orientation mask
-    cvCalcMotionGradient( mhi, mask, orient, max_time_delta, min_time_delta, 3 );
+    cvCalcMotionGradient( mhi, mask, orient, max_time_delta, min_time_delta, aperture );
     
     if( !storage )
         storage = cvCreateMemStorage(0);
@@ -324,7 +324,7 @@ void pix_opencv_motempl :: processRGBImage(imageStruct &image)
     cvCvtPlaneToPix( mask, 0, 0, 0, motion );
 
     // calculate motion gradient orientation and valid orientation mask
-    cvCalcMotionGradient( mhi, mask, orient, max_time_delta, min_time_delta, 3 );
+    cvCalcMotionGradient( mhi, mask, orient, max_time_delta, min_time_delta, aperture );
     
     if( !storage )
         storage = cvCreateMemStorage(0);
@@ -482,7 +482,7 @@ void pix_opencv_motempl :: processGrayImage(imageStruct &image)
     cvCvtPlaneToPix( mask, 0, 0, 0, motion );
 
     // calculate motion gradient orientation and valid orientation mask
-    cvCalcMotionGradient( mhi, mask, orient, max_time_delta, min_time_delta, 3 );
+    cvCalcMotionGradient( mhi, mask, orient, max_time_delta, min_time_delta, aperture );
     
     if( !storage )
         storage = cvCreateMemStorage(0);
@@ -571,6 +571,7 @@ void pix_opencv_motempl :: obj_setupCallback(t_class *classPtr)
   class_addmethod(classPtr, (t_method)&pix_opencv_motempl::frame_buffer_numMessCallback, gensym("frame_buffer_num"), A_FLOAT, A_NULL);
   class_addmethod(classPtr, (t_method)&pix_opencv_motempl::min_sizeMessCallback, gensym("min_size"), A_FLOAT, A_NULL);
   class_addmethod(classPtr, (t_method)&pix_opencv_motempl::max_sizeMessCallback, gensym("max_size"), A_FLOAT, A_NULL);
+  class_addmethod(classPtr, (t_method)&pix_opencv_motempl::apertureMessCallback, gensym("aperture"), A_FLOAT, A_NULL);
 }
 void pix_opencv_motempl :: thresholdMessCallback(void *data, t_floatarg pos)
 {
@@ -600,13 +601,24 @@ void pix_opencv_motempl :: frame_buffer_numMessCallback(void *data, t_floatarg f
 {
   GetMyClass(data)->floatframe_buffer_num((float)frame_buffer_num);
 }
+void pix_opencv_motempl :: apertureMessCallback(void *data, t_floatarg aperture)
+{
+  GetMyClass(data)->apertureMess((float)aperture);
+}
 void pix_opencv_motempl :: floatThreshMess(float thresh)
 {
   if (thresh>=0) diff_threshold = (int)thresh;
 }
 void pix_opencv_motempl :: floatMhiDuration(float duration)
 {
-  if (duration>=1) mhi_duration = (int)duration;
+  if ( duration < 1.0 ) mhi_duration = duration;
+}
+void pix_opencv_motempl :: apertureMess(float aperture)
+{
+  if ( ( aperture == 3.0 ) || ( aperture == 5.0 ) || ( aperture == 7.0 ) )
+  {
+    aperture = (int)aperture;
+  }
 }
 void pix_opencv_motempl :: floatmax_size(float max_size)
 {
diff --git a/pix_opencv_motempl.h b/pix_opencv_motempl.h
index c4783d8..e50d635 100644
--- a/pix_opencv_motempl.h
+++ b/pix_opencv_motempl.h
@@ -46,80 +46,81 @@ class GEM_EXTERN pix_opencv_motempl : public GemPixObj
 
     public:
 
-	    //////////
-	    // Constructor
-    	pix_opencv_motempl();
+    //////////
+    // Constructor
+    pix_opencv_motempl();
     	
     protected:
     	
-    	//////////
-    	// Destructor
-    	virtual ~pix_opencv_motempl();
-
-    	//////////
-    	// Do the processing
-    	virtual void 	processRGBAImage(imageStruct &image);
-    	virtual void 	processRGBImage(imageStruct &image);
-	virtual void 	processYUVImage(imageStruct &image);
-    	virtual void 	processGrayImage(imageStruct &image); 
+    //////////
+    // Destructor
+    virtual ~pix_opencv_motempl();
+
+    //////////
+    // Do the processing
+    virtual void 	processRGBAImage(imageStruct &image);
+    virtual void 	processRGBImage(imageStruct &image);
+    virtual void 	processYUVImage(imageStruct &image);
+    virtual void 	processGrayImage(imageStruct &image); 
     	
-	//////////
-    	// Set the new edge threshold
-    	void	    	floatThreshMess(float thresh);
-    	void	    	floatMhiDuration(float duration);
-    	void	    	floatmin_time_delta(float min_time_delta);
-    	void	    	floatmax_time_delta(float max_time_delta);
-    	void	    	floatframe_buffer_num(float frame_buffer_num);
-    	void	    	floatmax_size(float max_size);
-    	void	    	floatmin_size(float min_size);
-
-	// to detect changes in the image size
-	int 		comp_xsize;
-	int		comp_ysize;
+   //////////
+   // Set the new edge threshold
+   void	    	floatThreshMess(float thresh);
+   void	    	floatMhiDuration(float duration);
+   void	    	floatmin_time_delta(float min_time_delta);
+   void	    	floatmax_time_delta(float max_time_delta);
+   void	    	floatframe_buffer_num(float frame_buffer_num);
+   void	    	floatmax_size(float max_size);
+   void	    	floatmin_size(float min_size);
+   void	    	apertureMess(float aperture);
+
+   // to detect changes in the image size
+   int 		comp_xsize;
+   int		comp_ysize;
     	
-    	// Some varibales to control mophology mhi_duration
-    	int 		mhi_duration;
-    	int 		diff_threshold;
-    	int 		mask_size;
-    	int 		last;
+   // Some varibales to control mophology mhi_duration
+   double 	mhi_duration;
+   int 		diff_threshold;
+   int 		mask_size;
+   int 		last;
+   int          aperture;
+
+   // various tracking parameters (in seconds)
+   double max_time_delta;
+   double min_time_delta;
+   // number of cyclic frame buffer used for motion detection
+   // (should, probably, depend on FPS)
+   int frame_buffer_num; 
+
+   int max_size;
+   int min_size;
+
+   private:
+
+   //////////
+   // Static member functions
+   static void 	thresholdMessCallback(void *data, t_floatarg pos);
+   static void 	mhi_durationMessCallback(void *data, t_floatarg mhi_duration);
+   static void 	max_time_deltaMessCallback(void *data, t_floatarg max_time_delta);
+   static void 	min_time_deltaMessCallback(void *data, t_floatarg min_time_delta);
+   static void 	frame_buffer_numMessCallback(void *data, t_floatarg frame_buffer_num);
+   static void 	min_sizeMessCallback(void *data, t_floatarg min_size);
+   static void 	max_sizeMessCallback(void *data, t_floatarg max_size);
+   static void 	apertureMessCallback(void *data, t_floatarg aperture);
+
+   // The output and temporary images
+   IplImage 	*img, *motion, *rgba, *alpha;
     
-
-    // various tracking parameters (in seconds)
-    double max_time_delta;
-    double min_time_delta;
-    // number of cyclic frame buffer used for motion detection
-    // (should, probably, depend on FPS)
-    int frame_buffer_num; 
-
-    int max_size;
-    int min_size;
-    
-
-    private:
-
-    	//////////
-    	// Static member functions
-    	static void 	thresholdMessCallback(void *data, t_floatarg pos);
-    	static void 	mhi_durationMessCallback(void *data, t_floatarg mhi_duration);
-    	static void 	max_time_deltaMessCallback(void *data, t_floatarg max_time_delta);
-    	static void 	min_time_deltaMessCallback(void *data, t_floatarg min_time_delta);
-    	static void 	frame_buffer_numMessCallback(void *data, t_floatarg frame_buffer_num);
-    	static void 	min_sizeMessCallback(void *data, t_floatarg min_size);
-    	static void 	max_sizeMessCallback(void *data, t_floatarg max_size);
-
-	// The output and temporary images
-    	IplImage 	*img, *motion, *rgba, *alpha;
-    
-	// ring image buffer
-    	IplImage **buf;
-
-    	// temporary images
-    	IplImage *mhi; // MHI
-    	IplImage *orient; // orientation
-    	IplImage *mask; // valid orientation mask
-    	IplImage *segmask; // motion segmentation map
-    	CvMemStorage* storage; // temporary storage
-	t_outlet 	*m_dataout;
+   // ring image buffer
+   IplImage **buf;
+
+   // temporary images
+   IplImage *mhi; // MHI
+   IplImage *orient; // orientation
+   IplImage *mask; // valid orientation mask
+   IplImage *segmask; // motion segmentation map
+   CvMemStorage* storage; // temporary storage
+   t_outlet 	*m_dataout;
 };
 
 #endif	// for header file