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diff --git a/src/pix_opencv_threshold.cc b/src/pix_opencv_threshold.cc
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+////////////////////////////////////////////////////////
+//
+// GEM - Graphics Environment for Multimedia
+//
+// zmoelnig@iem.kug.ac.at
+//
+// Implementation file
+//
+// Copyright (c) 1997-2000 Mark Danks.
+// Copyright (c) Günther Geiger.
+// Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM
+// Copyright (c) 2002 James Tittle & Chris Clepper
+// For information on usage and redistribution, and for a DISCLAIMER OF ALL
+// WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+//
+/////////////////////////////////////////////////////////
+
+#include "pix_opencv_threshold.h"
+
+CPPEXTERN_NEW(pix_opencv_threshold)
+
+/////////////////////////////////////////////////////////
+//
+// pix_opencv_threshold
+//
+/////////////////////////////////////////////////////////
+// Constructor
+//
+/////////////////////////////////////////////////////////
+pix_opencv_threshold :: pix_opencv_threshold()
+{
+ inlet_new(this->x_obj, &this->x_obj->ob_pd, gensym("float"), gensym("max"));
+ inlet_new(this->x_obj, &this->x_obj->ob_pd, gensym("float"), gensym("threshold"));
+ threshold_value = 50;
+ max_value = 255;
+ threshold_mode = 0;
+ comp_xsize = 0;
+ comp_ysize = 0;
+ orig = NULL;
+ rgb = NULL;
+ gray = NULL;
+}
+
+/////////////////////////////////////////////////////////
+// Destructor
+//
+/////////////////////////////////////////////////////////
+pix_opencv_threshold :: ~pix_opencv_threshold()
+{
+ //Destroy cv_images to clean memory
+ cvReleaseImage(&orig);
+ cvReleaseImage(&gray);
+ cvReleaseImage(&rgb);
+}
+
+/////////////////////////////////////////////////////////
+// processImage
+//
+/////////////////////////////////////////////////////////
+void pix_opencv_threshold :: processRGBAImage(imageStruct &image)
+{
+ unsigned char *pixels = image.data;
+
+ if ((this->comp_xsize!=image.xsize)||(this->comp_ysize!=image.ysize)||(!orig)) {
+
+ this->comp_xsize = image.xsize;
+ this->comp_ysize = image.ysize;
+
+ //Destroy cv_images to clean memory
+ if ( orig )
+ {
+ cvReleaseImage(&orig);
+ cvReleaseImage(&gray);
+ cvReleaseImage(&rgb);
+ }
+
+ //create the orig image with new size
+ orig = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 4);
+ rgb = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 3);
+ gray = cvCreateImage(cvSize(orig->width,orig->height), IPL_DEPTH_8U, 1);
+ }
+ // Here we make a copy of the pixel data from image to orig->imageData
+ // orig is a IplImage struct, the default image type in openCV, take a look on the IplImage data structure here
+ // http://www.cs.iit.edu/~agam/cs512/lect-notes/opencv-intro/opencv-intro.html
+ memcpy( orig->imageData, image.data, image.xsize*image.ysize*4 );
+
+ // Convert to grayscale
+ cvCvtColor(orig, gray, CV_BGRA2GRAY);
+
+ // Applies fixed-level thresholding to single-channel array.
+ switch(this->threshold_mode) {
+ case 0:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_BINARY);
+ break;
+ case 1:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_BINARY_INV);
+ break;
+ case 2:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_TRUNC);
+ break;
+ case 3:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_TOZERO);
+ break;
+ case 4:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_TOZERO_INV);
+ break;
+ }
+
+ cvCvtColor(gray, orig, CV_GRAY2BGRA);
+
+ //copy back the processed frame to image
+ memcpy( image.data, orig->imageData, image.xsize*image.ysize*4 );
+}
+
+void pix_opencv_threshold :: processRGBImage(imageStruct &image)
+{
+ unsigned char *pixels = image.data;
+
+ if ((this->comp_xsize!=image.xsize)||(this->comp_ysize!=image.ysize)||(!rgb)) {
+
+ this->comp_xsize = image.xsize;
+ this->comp_ysize = image.ysize;
+
+ //Destroy cv_images to clean memory
+ if ( rgb )
+ {
+ cvReleaseImage(&orig);
+ cvReleaseImage(&gray);
+ cvReleaseImage(&rgb);
+ }
+
+ //create the orig image with new size
+ orig = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 4);
+ rgb = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 3);
+ gray = cvCreateImage(cvSize(rgb->width,rgb->height), IPL_DEPTH_8U, 1);
+
+ }
+ // FEM UNA COPIA DEL PACKET A image->imageData ... http://www.cs.iit.edu/~agam/cs512/lect-notes/opencv-intro/opencv-intro.html aqui veiem la estructura de IplImage
+ memcpy( rgb->imageData, image.data, image.xsize*image.ysize*3 );
+
+ // Convert to grayscale
+ cvCvtColor(rgb, gray, CV_RGB2GRAY);
+
+ // Applies fixed-level thresholding to single-channel array.
+ switch(this->threshold_mode) {
+ case 0:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_BINARY);
+ break;
+ case 1:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_BINARY_INV);
+ break;
+ case 2:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_TRUNC);
+ break;
+ case 3:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_TOZERO);
+ break;
+ case 4:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_TOZERO_INV);
+ break;
+ }
+
+ cvCvtColor(gray, rgb, CV_GRAY2BGR);
+
+ memcpy( image.data, rgb->imageData, image.xsize*image.ysize*3 );
+}
+
+void pix_opencv_threshold :: processYUVImage(imageStruct &image)
+{
+ post( "pix_opencv_threshold : yuv format not supported" );
+}
+
+void pix_opencv_threshold :: processGrayImage(imageStruct &image)
+{
+ unsigned char *pixels = image.data;
+
+ if ((this->comp_xsize!=image.xsize)||(this->comp_ysize!=image.ysize)||(!rgb)) {
+
+ this->comp_xsize = image.xsize;
+ this->comp_ysize = image.ysize;
+
+ //Destroy cv_images to clean memory
+ if ( rgb )
+ {
+ cvReleaseImage(&orig);
+ cvReleaseImage(&gray);
+ cvReleaseImage(&rgb);
+ }
+
+ //create the orig image with new size
+ orig = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 4);
+ rgb = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 3);
+ gray = cvCreateImage(cvSize(rgb->width,rgb->height), IPL_DEPTH_8U, 1);
+
+ }
+ // FEM UNA COPIA DEL PACKET A image->imageData ... http://www.cs.iit.edu/~agam/cs512/lect-notes/opencv-intro/opencv-intro.html aqui veiem la estructura de IplImage
+ memcpy( gray->imageData, image.data, image.xsize*image.ysize );
+
+ // Applies fixed-level thresholding to single-channel array.
+ switch(this->threshold_mode) {
+ case 0:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_BINARY);
+ break;
+ case 1:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_BINARY_INV);
+ break;
+ case 2:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_TRUNC);
+ break;
+ case 3:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_TOZERO);
+ break;
+ case 4:
+ cvThreshold(gray, gray, (float)this->threshold_value, (float)this->max_value, CV_THRESH_TOZERO_INV);
+ break;
+ }
+
+ memcpy( image.data, gray->imageData, image.xsize*image.ysize );
+}
+
+/////////////////////////////////////////////////////////
+// floatThreshMess
+//
+/////////////////////////////////////////////////////////
+void pix_opencv_threshold :: floatMaxMess (float maxvalue)
+{
+ if ( (int)maxvalue>0 ) this->max_value = maxvalue;
+}
+void pix_opencv_threshold :: floatThreshMess (float edge_thresh)
+{
+ this->threshold_value = edge_thresh;
+}
+void pix_opencv_threshold :: floatModeMess (float mode)
+{
+ if ((mode>=0)&&(mode<5)) this->threshold_mode = (int)mode;
+}
+
+/////////////////////////////////////////////////////////
+// static member function
+//
+/////////////////////////////////////////////////////////
+void pix_opencv_threshold :: obj_setupCallback(t_class *classPtr)
+{
+ class_addmethod(classPtr, (t_method)&pix_opencv_threshold::floatModeMessCallback,
+ gensym("mode"), A_FLOAT, A_NULL);
+ class_addmethod(classPtr, (t_method)&pix_opencv_threshold::floatMaxMessCallback,
+ gensym("max"), A_FLOAT, A_NULL);
+ class_addmethod(classPtr, (t_method)&pix_opencv_threshold::floatThreshMessCallback,
+ gensym("threshold"), A_FLOAT, A_NULL);
+}
+void pix_opencv_threshold :: floatMaxMessCallback(void *data, t_floatarg maxvalue)
+{
+ GetMyClass(data)->floatMaxMess((float)maxvalue);
+}
+void pix_opencv_threshold :: floatThreshMessCallback(void *data, t_floatarg edge_thresh)
+{
+ GetMyClass(data)->floatThreshMess((float)edge_thresh);
+}
+void pix_opencv_threshold :: floatModeMessCallback(void *data, t_floatarg mode)
+{
+ GetMyClass(data)->floatModeMess((float)mode);
+}
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