pdp_opencv_histo added and two bug fixes

svn path=/trunk/externals/pdp_opencv/; revision=11472

1 files changed, 397 insertions, 0 deletions

diff --git a/pdp_opencv_histo.c b/pdp_opencv_histo.c
new file mode 100644
index 0000000..37b8cc2
--- /dev/null
+++ b/pdp_opencv_histo.c
@@ -0,0 +1,397 @@
+/*
+ *   Pure Data Packet module.
+ *   Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <limits.h>
+#include <dlfcn.h>
+
+#include "pdp.h"
+
+#ifndef _EiC
+#include "cv.h"
+#endif
+
+
+#define MAX_HISTOGRAMS_TO_COMPARE 80
+
+typedef struct pdp_opencv_histo_struct
+{
+    t_object x_obj;
+    t_float x_f;
+
+    t_outlet *x_outlet0;
+    t_outlet *x_outlet1;
+    int x_packet0;
+    int x_packet1;
+    int x_dropped;
+    int x_queue_id;
+
+    int x_width;
+    int x_height;
+    int x_size;
+
+    int x_infosok; 
+
+    int save_now;
+    
+    CvHistogram *hist;
+    CvHistogram *saved_hist[MAX_HISTOGRAMS_TO_COMPARE];
+    IplImage *src, *hsv, *h_plane, *s_plane, *v_plane, *h_saved_plane, *s_saved_plane, *v_saved_plane, *planes[2],*saved_planes[2];
+
+    
+} t_pdp_opencv_histo;
+
+
+
+static void pdp_opencv_histo_process_rgb(t_pdp_opencv_histo *x)
+{
+    t_pdp     *header = pdp_packet_header(x->x_packet0);
+    short int *data   = (short int *)pdp_packet_data(x->x_packet0);
+    t_pdp     *newheader = pdp_packet_header(x->x_packet1);
+    short int *newdata = (short int *)pdp_packet_data(x->x_packet1); 
+      
+    int h_bins = (int)(x->x_width/10), s_bins = (int)(x->x_height/10);
+
+    if ((x->x_width != (t_int)header->info.image.width) || 
+        (x->x_height != (t_int)header->info.image.height)) 
+    {
+
+    	// if image size has changed we must create again our image and histogram structures
+    	post("pdp_opencv_histo :: resizing buffers");
+
+    	x->x_width = header->info.image.width;
+    	x->x_height = header->info.image.height;
+    	x->x_size = x->x_width*x->x_height;
+    
+    	//Destroy cv_images
+	cvReleaseImage(&x->src);
+	cvReleaseImage(&x->hsv);
+    	cvReleaseImage(&x->h_plane);
+    	cvReleaseImage(&x->s_plane);
+    	cvReleaseImage(&x->v_plane);
+    	cvReleaseImage(&x->h_saved_plane);
+    	cvReleaseImage(&x->s_saved_plane);
+    	cvReleaseImage(&x->v_saved_plane);
+    
+	//create the orig image with new size
+        x->src = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 3);
+
+    	// Create the output images with new sizes
+	x->hsv = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 3 );
+
+    	x->h_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+    	x->s_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+    	x->v_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+	x->planes[0] = x->h_plane;
+	x->planes[1] = x->s_plane;
+    	x->h_saved_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+    	x->s_saved_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+    	x->v_saved_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+	x->saved_planes[0] = x->h_saved_plane;
+	x->saved_planes[1] = x->s_saved_plane;
+        {
+          int    hist_size[]  = { h_bins, s_bins };
+          float  h_ranges[]   = { 0, 180 };         // hue is [0,180]
+          float  s_ranges[]   = { 0, 255 };
+          float* ranges[]     = { h_ranges, s_ranges };
+          x->hist = cvCreateHist(
+            2,
+            hist_size,
+            CV_HIST_ARRAY,
+            ranges,
+            1
+          );
+	  int n;
+	  for (n=0; n<MAX_HISTOGRAMS_TO_COMPARE; n++) {
+          	x->saved_hist[n] = cvCreateHist(
+          	  2,
+          	  hist_size,
+          	  CV_HIST_ARRAY,
+          	  ranges,
+          	  1
+          	);
+	  }
+        }
+
+    }
+    
+    newheader->info.image.encoding = header->info.image.encoding;
+    newheader->info.image.width = x->x_width;
+    newheader->info.image.height = x->x_height;
+    
+    memcpy( newdata, data, x->x_size*3 );
+
+    
+    // We make here a copy of the PDP packet in image->imageData ... 
+    // take a look on the IplImage data structure
+    // http://www.cs.iit.edu/~agam/cs512/lect-notes/opencv-intro/opencv-intro.html 
+    memcpy( x->src->imageData, data, x->x_size*3 );
+    
+    // Convert to grayscale
+    cvCvtColor( x->src, x->hsv, CV_BGR2HSV );
+    cvCvtPixToPlane( x->hsv, x->h_plane, x->s_plane, x->v_plane, 0 );
+	
+	// Build the histogram and compute its contents.
+	
+
+
+	if (x->save_now>=0) {
+    		fprintf(stderr,"saving histogram %d\n",x->save_now);
+    		cvCvtPixToPlane( x->hsv, x->h_saved_plane, x->s_saved_plane, x->v_saved_plane, 0 );
+        	cvCalcHist( x->saved_planes, x->saved_hist[x->save_now], 0, 0 ); //Compute histogram
+        	cvNormalizeHist( x->saved_hist[x->save_now], 1.0 );  //Normalize it 
+		x->save_now=-1;
+	} 
+        	cvCalcHist( x->planes, x->hist, 0, 0 ); //Compute histogram
+        	cvNormalizeHist( x->hist, 1.0 );  //Normalize it 
+
+	double tato[MAX_HISTOGRAMS_TO_COMPARE];
+	int nearest = -1;
+	double max  =  0;
+
+	int n;
+	for (n=0; n<MAX_HISTOGRAMS_TO_COMPARE; n++) {
+		tato[n] = cvCompareHist(x->hist, x->saved_hist[n], CV_COMP_INTERSECT);
+		if (tato[n]>max) {
+			max = tato[n];
+			nearest = n;
+		}
+	}
+    	
+	outlet_float(x->x_outlet1, (float)nearest);
+
+	// Create an image to use to visualize our histogram.
+	
+	int scale = 10;
+        //IplImage* hist_img = cvCreateImage( 
+        //  cvSize(x->x_width,x->x_height),
+        //  8,
+        //  3
+        //);
+        //cvZero( hist_img );
+
+	// populate our visualization with little gray squares.
+	
+	float max_value = 0;
+        cvGetMinMaxHistValue( x->hist, 0, &max_value, 0, 0 );
+
+	int h = 0;
+	int s = 0;
+
+
+        for( h = 0; h < h_bins; h++ ) {
+            for( s = 0; s < s_bins; s++ ) {
+                 float bin_val = cvQueryHistValue_2D( x->hist, h, s );
+                 int intensity = cvRound( bin_val * 255 / max_value );
+                 cvRectangle(
+                   x->src,
+                   cvPoint( h*scale, s*scale ),
+                   cvPoint( (h+1)*scale - 1, (s+1)*scale - 1),
+		   CV_RGB(intensity,intensity,intensity), CV_FILLED, 8 , 0 );
+               }
+          }
+
+    //memory copy again, now from x->cedge->imageData to the new data pdp packet
+    //memcpy( newdata, hist_img, x->x_size*3 );
+    memcpy( newdata, x->src->imageData, x->x_size*3 );
+
+    return;
+}
+
+static void pdp_opencv_histo_save(t_pdp_opencv_histo *x, t_floatarg f)
+{
+	if (((int)f>=0)&&((int)f<MAX_HISTOGRAMS_TO_COMPARE)) x->save_now = (int)f;
+}
+
+static void pdp_opencv_histo_sendpacket(t_pdp_opencv_histo *x)
+{
+    /* release the packet */
+    pdp_packet_mark_unused(x->x_packet0);
+    x->x_packet0 = -1;
+
+    /* unregister and propagate if valid dest packet */
+    pdp_packet_pass_if_valid(x->x_outlet0, &x->x_packet1);
+}
+
+static void pdp_opencv_histo_process(t_pdp_opencv_histo *x)
+{
+   int encoding;
+   t_pdp *header = 0;
+   char *parname;
+   unsigned pi;
+   int partype;
+   float pardefault;
+   t_atom plist[2];
+   t_atom tlist[2];
+   t_atom vlist[2];
+
+   /* check if image data packets are compatible */
+   if ( (header = pdp_packet_header(x->x_packet0))
+	&& (PDP_BITMAP == header->type)){
+    
+	/* pdp_opencv_histo_process inputs and write into active inlet */
+	switch(pdp_packet_header(x->x_packet0)->info.image.encoding){
+
+	case PDP_BITMAP_RGB:
+            x->x_packet1 = pdp_packet_clone_rw(x->x_packet0);
+            pdp_queue_add(x, pdp_opencv_histo_process_rgb, pdp_opencv_histo_sendpacket, &x->x_queue_id);
+	    break;
+
+	default:
+	    /* don't know the type, so dont pdp_opencv_histo_process */
+	    break;
+	    
+	}
+    }
+
+}
+
+static void pdp_opencv_histo_input_0(t_pdp_opencv_histo *x, t_symbol *s, t_floatarg f)
+{
+    /* if this is a register_ro message or register_rw message, register with packet factory */
+
+    if (s == gensym("register_rw")) 
+       x->x_dropped = pdp_packet_convert_ro_or_drop(&x->x_packet0, (int)f, pdp_gensym("bitmap/rgb/*") );
+
+    if ((s == gensym("process")) && (-1 != x->x_packet0) && (!x->x_dropped))
+    {
+        /* add the process method and callback to the process queue */
+        pdp_opencv_histo_process(x);
+    }
+}
+
+static void pdp_opencv_histo_free(t_pdp_opencv_histo *x)
+{
+  int i;
+
+    pdp_queue_finish(x->x_queue_id);
+    pdp_packet_mark_unused(x->x_packet0);
+    //cv_freeplugins(x);
+    
+    	//Destroy cv_images
+	cvReleaseImage(&x->src);
+    	cvReleaseImage(&x->hsv);
+    	cvReleaseImage(&x->h_plane);
+    	cvReleaseImage(&x->s_plane);
+    	cvReleaseImage(&x->v_plane);
+    	cvReleaseImage(&x->h_saved_plane);
+    	cvReleaseImage(&x->s_saved_plane);
+    	cvReleaseImage(&x->v_saved_plane);
+}
+
+t_class *pdp_opencv_histo_class;
+
+
+void *pdp_opencv_histo_new(t_floatarg f)
+{
+    int i;
+
+    t_pdp_opencv_histo *x = (t_pdp_opencv_histo *)pd_new(pdp_opencv_histo_class);
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("save"));
+
+    x->x_outlet0 = outlet_new(&x->x_obj, &s_anything); 
+    x->x_outlet1 = outlet_new(&x->x_obj, &s_float);
+
+    x->x_packet0 = -1;
+    x->x_packet1 = -1;
+    x->x_queue_id = -1;
+
+    x->x_width  = 320;
+    x->x_height = 240;
+    x->x_size   = x->x_width * x->x_height;
+
+    x->x_infosok = 0;
+    x->save_now = 0;
+    
+
+
+
+    	x->src = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 3);
+	x->hsv = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 3 );
+
+    	x->h_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+    	x->s_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+    	x->v_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+	x->planes[0] = x->h_plane;
+	x->planes[1] = x->s_plane;
+        cvCvtPixToPlane( x->hsv, x->h_plane, x->s_plane, x->v_plane, 0 );
+    	x->h_saved_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+    	x->s_saved_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+    	x->v_saved_plane = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 1);
+	x->saved_planes[0] = x->h_saved_plane;
+	x->saved_planes[1] = x->s_saved_plane;
+        cvCvtPixToPlane( x->hsv, x->h_saved_plane, x->s_saved_plane, x->v_saved_plane, 0 );
+
+    cvCvtColor( x->src, x->hsv, CV_BGR2HSV );
+
+	int h_bins = (int)(x->x_width/10), s_bins = (int)(x->x_height/10);
+        {
+          int    hist_size[]  = { h_bins, s_bins };
+          float  h_ranges[]   = { 0, 180 };         // hue is [0,180]
+          float  s_ranges[]   = { 0, 255 };
+          float* ranges[]     = { h_ranges, s_ranges };
+          x->hist = cvCreateHist(
+            2,
+            hist_size,
+            CV_HIST_ARRAY,
+            ranges,
+            1
+          );
+	  int n;
+	  for (n=0; n<MAX_HISTOGRAMS_TO_COMPARE; n++) {
+          	x->saved_hist[n] = cvCreateHist(
+          	  2,
+          	  hist_size,
+          	  CV_HIST_ARRAY,
+          	  ranges,
+          	  1
+          	);
+	  }
+        }
+
+    return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_opencv_histo_setup(void)
+{
+
+    post( "		pdp_opencv_histo");
+    pdp_opencv_histo_class = class_new(gensym("pdp_opencv_histo"), (t_newmethod)pdp_opencv_histo_new,
+    	(t_method)pdp_opencv_histo_free, sizeof(t_pdp_opencv_histo), 0, A_DEFFLOAT, A_NULL);
+
+    class_addmethod(pdp_opencv_histo_class, (t_method)pdp_opencv_histo_input_0, gensym("pdp"),  A_SYMBOL, A_DEFFLOAT, A_NULL);
+    class_addmethod(pdp_opencv_histo_class, (t_method)pdp_opencv_histo_save, gensym("save"),  A_FLOAT, A_NULL );   
+
+
+}
+
+#ifdef __cplusplus
+}
+#endif