1 files changed, 411 insertions, 0 deletions

diff --git a/pdp_opencv_contours_convexhull.cc b/pdp_opencv_contours_convexhull.cc
new file mode 100644
index 0000000..f57515f
--- /dev/null
+++ b/pdp_opencv_contours_convexhull.cc
@@ -0,0 +1,411 @@
+/*
+ *   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 <math.h>
+
+#include "pdp.h"
+
+#ifndef _EiC
+#include "cv.h"
+#endif
+
+#define MAX_MARKERS 100
+
+typedef struct pdp_opencv_contours_convexhull_struct
+{
+    t_object x_obj;
+    t_float x_f;
+
+    t_outlet *x_outlet0;
+    t_outlet *x_dataout;
+    t_outlet *x_countout;
+    t_atom    rlist[5];
+    int x_packet0;
+    int x_packet1;
+    int x_dropped;
+    int x_queue_id;
+
+    // contours retrieval mode
+    int x_cmode;
+    // contours retrieval method
+    int x_cmethod;
+    int x_accuracy;
+
+    int x_width;
+    int x_height;
+    int x_size;
+
+    int x_nightmode;  // don't show the original image
+
+    IplImage *image, *gray, *cnt_img;
+    
+} t_pdp_opencv_contours_convexhull;
+
+static void pdp_opencv_contours_convexhull_process_rgb(t_pdp_opencv_contours_convexhull *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); 
+    char tindex[4];
+    int i = 0;                   // Indicator of cycles.
+    int j=0;
+    int k = 0;
+    int area = 0;
+    int selected = -1;
+    CvSeq* first_contour;
+    CvSeq* defects;
+    CvSeq* contours;
+    int* hull;
+    int hullsize;
+    CvPoint* PointArray;
+    CvConvexityDefect* defectArray;
+    CvMemStorage* stor02;
+    CvMemStorage* stor03;
+
+    stor02 = cvCreateMemStorage(0);
+    stor03 = cvCreateMemStorage(0);
+
+    if ((x->x_width != (t_int)header->info.image.width) || 
+        (x->x_height != (t_int)header->info.image.height)) 
+    {
+
+    	post("pdp_opencv_contours_convexhull :: resizing plugins");
+	
+
+    	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->image);
+    	cvReleaseImage(&x->gray);
+    	cvReleaseImage(&x->cnt_img);
+    
+	//create the orig image with new size
+        x->image = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 3);
+
+    	// Create the output images with new sizes
+    	x->gray = cvCreateImage(cvSize(x->image->width,x->image->height), IPL_DEPTH_8U, 1);
+    	x->cnt_img = cvCreateImage(cvSize(x->image->width,x->image->height), IPL_DEPTH_8U, 3);
+    
+    }
+    
+    newheader->info.image.encoding = header->info.image.encoding;
+    newheader->info.image.width = x->x_width;
+    newheader->info.image.height = x->x_height;
+
+    memcpy( x->image->imageData, data, x->x_size*3 );
+    
+    // Convert to grayscale
+    cvCvtColor(x->image, x->gray, CV_BGR2GRAY);
+
+    // Retrieval mode.
+    // CV_RETR_EXTERNAL || CV_RETR_LIST || CV_RETR_CCOMP || CV_RETR_TREE
+    // Approximation method.
+    // CV_CHAIN_CODE || CV_CHAIN_APPROX_NONE || CV_CHAIN_APPROX_SIMPLE || CV_CHAIN_APPROX_TC89_L1 || CV_CHAIN_APPROX_TC89_KCOS || CV_LINK_RUNS
+
+    cvFindContours( x->gray, stor02, &contours, sizeof(CvContour), x->x_cmode, x->x_cmethod, cvPoint(0,0) );
+    if (contours) contours = cvApproxPoly( contours, sizeof(CvContour), stor02, CV_POLY_APPROX_DP, x->x_accuracy, 1 );
+
+    cvCopy(x->image, x->cnt_img, NULL);
+    if ( x->x_nightmode )
+    {
+       cvZero( x->cnt_img );
+    }
+
+    first_contour = contours;
+
+    // searching for biggest contour
+    for( ; contours != 0; contours = contours->h_next )
+    {
+      CvRect rect;
+      rect = cvContourBoundingRect(contours, 1);
+      if  ( (rect.width*rect.height) > area )
+      {
+           selected = i;
+           area = rect.width*rect.height;
+      }
+      i++;
+    }
+
+    contours = first_contour;
+    for( ; contours != 0; contours = contours->h_next )
+    {
+      int count = contours->total; // This is number point in contour
+      CvPoint center;
+      CvSize size;
+      CvRect rect;
+
+      rect = cvContourBoundingRect( contours, 1);
+      if ( (k==selected) ) 
+      {
+        PointArray = (CvPoint*)malloc( count*sizeof(CvPoint) );
+        hull = (int*)malloc(sizeof(int)*count);
+        cvCvtSeqToArray(contours, PointArray, CV_WHOLE_SEQ);
+
+        cvConvexHull( PointArray,
+                      count,
+                      NULL,
+                      CV_COUNTER_CLOCKWISE,
+                      hull,
+                      &hullsize);
+
+        outlet_float( x->x_countout, hullsize );
+
+        t_atom rlist[hullsize*2];
+
+        // Draw convex hull for current contour.
+        for(i=0; i<hullsize-1; i++)
+        {
+            cvLine(x->cnt_img, PointArray[hull[i]], PointArray[hull[i+1]],CV_RGB(0,0,255),3, CV_AA, 0 );
+            SETFLOAT(&rlist[j], PointArray[hull[i]].x);
+            SETFLOAT(&rlist[j+1], PointArray[hull[i]].y);
+            j = j + 2;
+        }
+
+        cvLine(x->cnt_img, PointArray[hull[hullsize-1]], PointArray[hull[0]],CV_RGB(0,0,255),3, CV_AA, 0 );
+        SETFLOAT(&rlist[j], PointArray[hull[i]].x);
+        SETFLOAT(&rlist[j+1], PointArray[hull[i]].y);
+        outlet_list( x->x_dataout, 0, hullsize*2, rlist );
+
+        free(PointArray);
+        free(hull);
+      }
+      k++;
+    }
+
+    cvReleaseMemStorage( &stor03 );
+    cvReleaseMemStorage( &stor02 );
+    
+    memcpy( newdata, x->cnt_img->imageData, x->x_size*3 );
+ 
+    return;
+}
+
+static void pdp_opencv_contours_convexhull_nightmode(t_pdp_opencv_contours_convexhull *x, t_floatarg f)
+{
+    if  ( ((int)f==1) || ((int)f==0) ) x->x_nightmode = (int)f;
+}
+
+static void pdp_opencv_contours_convexhull_accuracy(t_pdp_opencv_contours_convexhull *x, t_floatarg f)
+{
+    if  ((int)f>=0) x->x_accuracy = (int)f;
+}
+
+static void pdp_opencv_contours_convexhull_cmode(t_pdp_opencv_contours_convexhull *x, t_floatarg f)
+{
+    // CV_RETR_EXTERNAL || CV_RETR_LIST || CV_RETR_CCOMP || CV_RETR_TREE
+    int mode = (int)f;
+
+    if ( mode == CV_RETR_EXTERNAL )
+    {
+       x->x_cmode = CV_RETR_EXTERNAL;
+       post( "pdp_opencv_contours_convexhull : mode set to CV_RETR_EXTERNAL" );
+    }
+    if ( mode == CV_RETR_LIST )
+    {
+       x->x_cmode = CV_RETR_LIST;
+       post( "pdp_opencv_contours_convexhull : mode set to CV_RETR_LIST" );
+    }
+    if ( mode == CV_RETR_CCOMP )
+    {
+       x->x_cmode = CV_RETR_CCOMP;
+       post( "pdp_opencv_contours_convexhull : mode set to CV_RETR_CCOMP" );
+    }
+    if ( mode == CV_RETR_TREE )
+    {
+       x->x_cmode = CV_RETR_TREE;
+       post( "pdp_opencv_contours_convexhull : mode set to CV_RETR_TREE" );
+    }
+}
+
+static void pdp_opencv_contours_convexhull_cmethod(t_pdp_opencv_contours_convexhull *x, t_floatarg f)
+{
+  int method = (int)f;
+
+    // CV_CHAIN_CODE || CV_CHAIN_APPROX_NONE || CV_CHAIN_APPROX_SIMPLE || CV_CHAIN_APPROX_TC89_L1 || CV_CHAIN_APPROX_TC89_KCOS || CV_LINK_RUNS
+    if ( method == CV_CHAIN_CODE )
+    {
+       post( "pdp_opencv_contours_convexhull : not supported method : CV_CHAIN_CODE" );
+    }
+    if ( method == CV_CHAIN_APPROX_NONE )
+    {
+       x->x_cmethod = CV_CHAIN_APPROX_NONE;
+       post( "pdp_opencv_contours_convexhull : method set to CV_CHAIN_APPROX_NONE" );
+    }
+    if ( method == CV_CHAIN_APPROX_SIMPLE )
+    {
+       x->x_cmethod = CV_CHAIN_APPROX_SIMPLE;
+       post( "pdp_opencv_contours_convexhull : method set to CV_CHAIN_APPROX_SIMPLE" );
+    }
+    if ( method == CV_CHAIN_APPROX_TC89_L1 )
+    {
+       x->x_cmethod = CV_CHAIN_APPROX_TC89_L1;
+       post( "pdp_opencv_contours_convexhull : method set to CV_CHAIN_APPROX_TC89_L1" );
+    }
+    if ( method == CV_CHAIN_APPROX_TC89_KCOS )
+    {
+       x->x_cmethod = CV_CHAIN_APPROX_TC89_KCOS;
+       post( "pdp_opencv_contours_convexhull : method set to CV_CHAIN_APPROX_TC89_KCOS" );
+    }
+    if ( ( method == CV_LINK_RUNS ) && ( x->x_cmode == CV_RETR_LIST ) )
+    {
+       x->x_cmethod = CV_LINK_RUNS;
+       post( "pdp_opencv_contours_convexhull : method set to CV_LINK_RUNS" );
+    }
+}
+
+static void pdp_opencv_contours_convexhull_sendpacket(t_pdp_opencv_contours_convexhull *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_contours_convexhull_process(t_pdp_opencv_contours_convexhull *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_contours_convexhull_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, (void*)pdp_opencv_contours_convexhull_process_rgb, (void*)pdp_opencv_contours_convexhull_sendpacket, &x->x_queue_id);
+	    break;
+
+	default:
+	    /* don't know the type, so dont pdp_opencv_contours_convexhull_process */
+	    break;
+	    
+	}
+    }
+
+}
+
+static void pdp_opencv_contours_convexhull_input_0(t_pdp_opencv_contours_convexhull *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((char*)"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_contours_convexhull_process(x);
+    }
+}
+
+static void pdp_opencv_contours_convexhull_free(t_pdp_opencv_contours_convexhull *x)
+{
+  int i;
+
+    pdp_queue_finish(x->x_queue_id);
+    pdp_packet_mark_unused(x->x_packet0);
+    
+    //Destroy cv_images
+    cvReleaseImage(&x->image);
+    cvReleaseImage(&x->gray);
+    cvReleaseImage(&x->cnt_img);
+}
+
+t_class *pdp_opencv_contours_convexhull_class;
+
+
+void *pdp_opencv_contours_convexhull_new(t_floatarg f)
+{
+    int i;
+
+    t_pdp_opencv_contours_convexhull *x = (t_pdp_opencv_contours_convexhull *)pd_new(pdp_opencv_contours_convexhull_class);
+
+    x->x_outlet0 = outlet_new(&x->x_obj, &s_anything); 
+    x->x_countout = outlet_new(&x->x_obj, &s_float); 
+    x->x_dataout = outlet_new(&x->x_obj, &s_anything); 
+
+    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_cmode   = CV_RETR_LIST;
+    x->x_cmethod = CV_CHAIN_APPROX_SIMPLE;
+
+    x->x_nightmode = 0;
+    x->x_accuracy = 3;
+
+    x->image = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 3);
+    x->gray = cvCreateImage(cvSize(x->image->width,x->image->height), IPL_DEPTH_8U, 1);
+    x->cnt_img = cvCreateImage(cvSize(x->image->width,x->image->height), IPL_DEPTH_8U, 3);
+
+    //contours = 0;
+    return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_opencv_contours_convexhull_setup(void)
+{
+
+    post( "		pdp_opencv_contours_convexhull");
+    pdp_opencv_contours_convexhull_class = class_new(gensym("pdp_opencv_contours_convexhull"), (t_newmethod)pdp_opencv_contours_convexhull_new,
+    	(t_method)pdp_opencv_contours_convexhull_free, sizeof(t_pdp_opencv_contours_convexhull), 0, A_DEFFLOAT, A_NULL);
+
+    class_addmethod(pdp_opencv_contours_convexhull_class, (t_method)pdp_opencv_contours_convexhull_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+    class_addmethod(pdp_opencv_contours_convexhull_class, (t_method)pdp_opencv_contours_convexhull_cmode, gensym("mode"), A_FLOAT, A_NULL );
+    class_addmethod(pdp_opencv_contours_convexhull_class, (t_method)pdp_opencv_contours_convexhull_cmethod, gensym("method"), A_FLOAT, A_NULL );
+    class_addmethod(pdp_opencv_contours_convexhull_class, (t_method)pdp_opencv_contours_convexhull_nightmode, gensym("nightmode"), A_FLOAT, A_NULL );
+    class_addmethod(pdp_opencv_contours_convexhull_class, (t_method)pdp_opencv_contours_convexhull_accuracy, gensym("accuracy"), A_FLOAT, A_NULL );
+
+}
+
+#ifdef __cplusplus
+}
+#endif