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diff --git a/pix_opencv_cvk.h b/pix_opencv_cvk.h
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+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    Change pix to greyscale
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    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.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_PIX_OPENCV_CVK_H_
+#define INCLUDE_PIX_OPENCV_CVK_H_
+
+#include "Base/GemPixObj.h"
+
+#ifndef _EiC
+#include "cv.h"
+#include "highgui.h"
+#include "ml.h"
+#endif
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    
+   pix_opencv_cvk : OCR like pattern recognition
+   based on basic OCR with Open CV tutorial
+   by damiles : http://blog.damiles.com/?p=93    
+
+KEYWORDS
+    pix
+    
+DESCRIPTION
+   
+-----------------------------------------------------------------*/
+class GEM_EXTERN pix_opencv_cvk : public GemPixObj
+{
+    CPPEXTERN_HEADER(pix_opencv_cvk, GemPixObj)
+
+    public:
+
+	    //////////
+	    // Constructor
+    	pix_opencv_cvk(t_symbol *path, t_floatarg nsamples);
+    	
+    protected:
+    	
+    	//////////
+    	// Destructor
+    	virtual ~pix_opencv_cvk();
+
+    	//////////
+    	// Do the processing
+    	virtual void 	processRGBAImage(imageStruct &image);
+    	virtual void 	processRGBImage(imageStruct &image);
+	virtual void 	processYUVImage(imageStruct &image);
+    	virtual void 	processGrayImage(imageStruct &image); 
+    	
+        void findX(IplImage* imgSrc,int* min, int* max);
+        void findY(IplImage* imgSrc,int* min, int* max);
+        CvRect findBB(IplImage* imgSrc);
+        IplImage preprocessing(IplImage* imgSrc,int new_width, int new_height);
+        void load_patterns(void);
+
+	// to detect changes in the image size
+	int 		comp_xsize;
+	int		comp_ysize;
+    
+
+    private:
+    
+    	//////////
+    	// Static member functions
+    	static void 	bangMessCallback(void *data);
+    	static void 	loadMessCallback(void *data, t_symbol *path, t_floatarg nsamples);
+
+        // internal data
+        t_outlet        *m_dataout;
+        int             x_classify;
+
+         // open cv classifier data
+        char            *x_filepath;
+        int             x_nsamples;
+        int             x_rsamples;
+        CvMat           *trainData;
+        CvMat           *trainClasses;
+        CvMat           *x_nearest;
+        CvMat           *x_dist;
+        int             x_pwidth;
+        int             x_pheight;
+        CvKNearest      *knn;
+
+	// The output and temporary images
+    	IplImage 	*rgba, *rgb, *grey;
+	
+};
+
+#endif	// for header file