From 48886dd80cf5a05dad279363e8fc9743dd7770ae Mon Sep 17 00:00:00 2001
From: Antoine Villeret <avilleret@users.sourceforge.net>
Date: Thu, 27 Dec 2012 14:41:22 +0000
Subject: clean up directory fix help patch dependency improve REAMDE

svn path=/trunk/externals/pix_opencv/; revision=16770
---
 Makefile                                          |   2 +-
 README.txt                                        |   8 +
 examples/06_GPU_opticalflow/06_GPU_opticalflow.pd | 169 ++++++++++++++++++++++
 examples/06_GPU_opticalflow/of.frag               |  47 ++++++
 of.frag                                           |  47 ------
 pix_opencv_contours-help.pd                       | 104 ++++++++++++-
 pix_opencv_opticalflow.pd                         | 150 -------------------
 7 files changed, 322 insertions(+), 205 deletions(-)
 create mode 100644 examples/06_GPU_opticalflow/06_GPU_opticalflow.pd
 create mode 100644 examples/06_GPU_opticalflow/of.frag
 delete mode 100644 of.frag
 delete mode 100644 pix_opencv_opticalflow.pd

diff --git a/Makefile b/Makefile
index 5c6d82a..e71fc00 100644
--- a/Makefile
+++ b/Makefile
@@ -36,7 +36,7 @@ UNITTESTS =
 #------------------------------------------------------------------------------#
 
 ALL_CFLAGS = -I"$(PD_INCLUDE)"
-CFLAGS_linux = -I/usr/include/Gem
+CFLAGS_linux = -I/usr/local/include/Gem `pkg-config --cflags opencv`
 CFLAGS_macosx = -I/Library/Frameworks/OpenCV.framework/Headers/ \
     -I$(PD_PATH)/include/Gem -I$(PD_PATH)/include
 ALL_LDFLAGS =  
diff --git a/README.txt b/README.txt
index 426f5da..3fd8108 100644
--- a/README.txt
+++ b/README.txt
@@ -6,6 +6,8 @@ get the source version through svn :
 svn co https://pure-data.svn.sourceforge.net/svnroot/pure-data pure-data
 cd pure-data/trunk/externals/pix_opencv
 
+pix_opencv depends on OpenCV 2.x and >1.5 (for old externals)
+
 ===== GNU/Linux ===== 
 
 (actually only tested in GNU/Linux Ubuntu)
@@ -49,6 +51,12 @@ first install openCV MacOS framework
    download openCV private framework from http://www.ient.rwth-aachen.de/cms/software/opencv/
    copy the provided OpenCV.framework folder in your /Library/Frameworks/ directory ::
 	cp -Rf /Volumes/OpenCV\ Private\ Framework/OpenCV.framework /Library/Frameworks/
+this will only install OpenCV 1.5
+
+you need OpenCV 2.x to use recent pix_opencv externals
+you will find a step by step how to install it on Mac OSX here : 
+http://opencv.willowgarage.com/wiki/Mac_OS_X_OpenCV_Port
+but this document is quite old...
  
 get the _SOURCES_ of the pd you are using
 and of the GEM that you are loading
diff --git a/examples/06_GPU_opticalflow/06_GPU_opticalflow.pd b/examples/06_GPU_opticalflow/06_GPU_opticalflow.pd
new file mode 100644
index 0000000..c607683
--- /dev/null
+++ b/examples/06_GPU_opticalflow/06_GPU_opticalflow.pd
@@ -0,0 +1,169 @@
+#N canvas 371 215 1451 649 10;
+#X obj 936 450 cnv 15 200 40 empty empty empty 20 12 0 14 -261234 -66577
+0;
+#X obj 149 397 gemframebuffer;
+#X obj 149 424 translateXYZ 0 0 -4;
+#X obj 149 558 pix_texture;
+#X obj 194 511 loadbang;
+#X obj 162 343 loadbang;
+#X obj 568 438 gemframebuffer;
+#X obj 568 476 translateXYZ 0 0 -4;
+#X obj 568 577 pix_texture;
+#X obj 603 521 loadbang;
+#X obj 594 359 loadbang;
+#X msg 600 542 rectangle 1 \, quality 1;
+#X obj 1057 537 loadbang;
+#X msg 1057 557 rectangle 1 \, quality 1;
+#X obj 149 587 rectangle 4 4;
+#X obj 568 603 square 4;
+#X msg 1204 461 previousFrame 1 \, currentFrame 2;
+#X msg 1224 432 lambda \$1;
+#X msg 1288 431 scale \$1 \$1;
+#X msg 194 533 rectangle 1 \, quality 1;
+#X obj 608 419 r of_dim;
+#X obj 1047 587 pix_texture;
+#X obj 342 179 gemwin;
+#X msg 325 140 create \, 1;
+#X msg 398 140 0 \, destroy;
+#N canvas 493 216 473 548 glsl_frag 0;
+#X obj 104 413 glsl_program;
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+#X obj 179 255 change;
+#X msg 60 360 print;
+#X obj 104 232 glsl_fragment;
+#X floatatom 179 281 2 0 0 0 ID - -;
+#X obj 197 327 print linking;
+#X text 123 361 after linking \, click "print" to get some info about
+the compiled shader program;
+#X obj 41 16 inlet;
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+#X obj 529 66 pix_info _____________;
+#X msg 639 116 \$1;
+#X obj 529 5 gemhead;
+#X obj 529 45 pix_video;
+#X obj 529 113 pix_texture;
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+10 -262144 -1 -1 1 256;
+#X obj 1289 359 loadbang;
+#X msg 1289 382 1;
+#X text 815 119 this is an example of how to compute optical flow on
+GPU;
+#X obj 1240 212 loadbang;
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+#X obj 1230 262 pix_texture;
+#X obj 1230 140 gemhead;
+#X text 571 179 <-- only render when a new image arrived;
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diff --git a/examples/06_GPU_opticalflow/of.frag b/examples/06_GPU_opticalflow/of.frag
new file mode 100644
index 0000000..af7d99e
--- /dev/null
+++ b/examples/06_GPU_opticalflow/of.frag
@@ -0,0 +1,47 @@
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect currentFrame, previousFrame;
+uniform float lambda;
+uniform vec2 scale;
+
+vec2 offset = vec2(1.,1.);
+vec2 texcoord0 = gl_TexCoord[0].st;
+vec2 texcoord1 = gl_TexCoord[1].st;
+
+void main()
+{   
+	vec4 a = texture2DRect(currentFrame, texcoord0);
+	vec4 b = texture2DRect(previousFrame , texcoord1);
+	vec2 x1 = vec2(offset.x,0.);
+	vec2 y1 = vec2(0.,offset.y);
+
+	//get the difference
+	vec4 curdif = b-a;
+	
+	//calculate the gradient
+	vec4 gradx = texture2DRect(previousFrame, texcoord1+x1)-texture2DRect(previousFrame, texcoord1-x1);
+	gradx += texture2DRect(currentFrame, texcoord0+x1)-texture2DRect(currentFrame, texcoord0-x1);
+	vec4 grady = texture2DRect(previousFrame, texcoord1+y1)-texture2DRect(previousFrame, texcoord1-y1);
+	grady += texture2DRect(currentFrame, texcoord0+y1)-texture2DRect(currentFrame, texcoord0-y1);
+	vec4 gradmag = sqrt((gradx*gradx)+(grady*grady)+vec4(lambda));
+	
+	if ( gradmag.r == 0. ) {
+		gl_FragColor = vec4(0.5,0.5,0.5,1);
+		return;
+	}
+
+	vec4 vx = curdif*(gradx/gradmag);
+	float vxd = vx.r;//assumes greyscale
+	//format output for flowrepos, out(-x,+x,-y,+y)
+	//~ vec2 xout = vec2(max(vxd,0.),abs(min(vxd,0.)))*scale.x;
+	float xout = ((vxd/2.)*scale.x+0.5);
+
+	vec4 vy = curdif*(grady/gradmag);
+	float vyd = vy.r;//assumes greyscale
+	//format output for flowrepos, out(-x,+x,-y,+y)
+	//~ vec2 yout = vec2(max(vyd,0.),abs(min(vyd,0.)))*scale.y;
+	float yout = ((vyd/2.)*scale.y+0.5);
+	
+	//~ gl_FragColor = vec4(xout.xy,yout.xy);
+	gl_FragColor = vec4(xout,yout,0.5,1.);
+}
diff --git a/of.frag b/of.frag
deleted file mode 100644
index af7d99e..0000000
--- a/of.frag
+++ /dev/null
@@ -1,47 +0,0 @@
-#extension GL_ARB_texture_rectangle : enable
-
-uniform sampler2DRect currentFrame, previousFrame;
-uniform float lambda;
-uniform vec2 scale;
-
-vec2 offset = vec2(1.,1.);
-vec2 texcoord0 = gl_TexCoord[0].st;
-vec2 texcoord1 = gl_TexCoord[1].st;
-
-void main()
-{   
-	vec4 a = texture2DRect(currentFrame, texcoord0);
-	vec4 b = texture2DRect(previousFrame , texcoord1);
-	vec2 x1 = vec2(offset.x,0.);
-	vec2 y1 = vec2(0.,offset.y);
-
-	//get the difference
-	vec4 curdif = b-a;
-	
-	//calculate the gradient
-	vec4 gradx = texture2DRect(previousFrame, texcoord1+x1)-texture2DRect(previousFrame, texcoord1-x1);
-	gradx += texture2DRect(currentFrame, texcoord0+x1)-texture2DRect(currentFrame, texcoord0-x1);
-	vec4 grady = texture2DRect(previousFrame, texcoord1+y1)-texture2DRect(previousFrame, texcoord1-y1);
-	grady += texture2DRect(currentFrame, texcoord0+y1)-texture2DRect(currentFrame, texcoord0-y1);
-	vec4 gradmag = sqrt((gradx*gradx)+(grady*grady)+vec4(lambda));
-	
-	if ( gradmag.r == 0. ) {
-		gl_FragColor = vec4(0.5,0.5,0.5,1);
-		return;
-	}
-
-	vec4 vx = curdif*(gradx/gradmag);
-	float vxd = vx.r;//assumes greyscale
-	//format output for flowrepos, out(-x,+x,-y,+y)
-	//~ vec2 xout = vec2(max(vxd,0.),abs(min(vxd,0.)))*scale.x;
-	float xout = ((vxd/2.)*scale.x+0.5);
-
-	vec4 vy = curdif*(grady/gradmag);
-	float vyd = vy.r;//assumes greyscale
-	//format output for flowrepos, out(-x,+x,-y,+y)
-	//~ vec2 yout = vec2(max(vyd,0.),abs(min(vyd,0.)))*scale.y;
-	float yout = ((vyd/2.)*scale.y+0.5);
-	
-	//~ gl_FragColor = vec4(xout.xy,yout.xy);
-	gl_FragColor = vec4(xout,yout,0.5,1.);
-}
diff --git a/pix_opencv_contours-help.pd b/pix_opencv_contours-help.pd
index 446e838..2aa9bb1 100644
--- a/pix_opencv_contours-help.pd
+++ b/pix_opencv_contours-help.pd
@@ -1,4 +1,4 @@
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+#N canvas 757 219 794 706 10;
 #X obj 472 35 cnv 15 300 400 empty empty empty 20 12 0 14 -228992 -66577
 0;
 #X obj 11 56 cnv 15 450 200 empty empty empty 20 12 0 14 -233017 -66577
@@ -174,7 +174,6 @@ point (2 floats)> <depth point (2 floats)> depth;
 #X connect 35 0 26 0;
 #X restore 658 323 pd draw_rotrect;
 #X obj 487 240 pix_opencv_contours;
-#X obj 479 320 pix_opencv_drawcontours;
 #X obj 514 96 pix_image examples/dessin.tif;
 #N canvas 969 295 674 695 drawdefects 0;
 #X obj 191 301 gemhead;
@@ -298,13 +297,104 @@ point (2 floats)> <depth point (2 floats)> depth;
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 #X text 534 397 pink = convexhull edge with defects;
 #X text 540 409 red = farthest point from convexhull;
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 #X connect 13 0 14 0;
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diff --git a/pix_opencv_opticalflow.pd b/pix_opencv_opticalflow.pd
deleted file mode 100644
index 9b7fa89..0000000
--- a/pix_opencv_opticalflow.pd
+++ /dev/null
@@ -1,150 +0,0 @@
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-#X connect 32 0 39 0;
-#X connect 32 1 3 1;
-#X connect 33 0 38 0;
-#X connect 34 0 35 0;
-#X connect 35 0 40 0;
-#X connect 35 0 41 0;
-#X connect 35 0 42 0;
-#X connect 36 0 1 0;
-#X connect 37 0 6 0;
-#X connect 38 1 41 0;
-#X connect 38 2 40 0;
-#X connect 39 0 42 0;
-#X connect 39 1 33 0;
-#X connect 40 0 6 0;
-#X connect 41 0 1 0;
-#X connect 42 0 27 0;
-#X connect 44 0 19 0;
-#X connect 45 0 20 0;
-- 
cgit v1.2.1