pyrimage.h

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/*
Copyright 2005, 2006 Computer Vision Lab, 
Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland. 
All rights reserved.

This file is part of BazAR.

BazAR 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.

BazAR 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
BazAR; if not, write to the Free Software Foundation, Inc., 51 Franklin
Street, Fifth Floor, Boston, MA 02110-1301, USA 
*/
#ifndef PYRIMAGE_H
#define PYRIMAGE_H

#include <cv.h>

#ifdef WIN32                      // disable warning :
#pragma warning( disable : 4127 ) // (/W4) conditional expression is constant
#pragma warning( disable : 4512 ) // (/W4) assignment operator could not be generated
#pragma warning( disable : 4288 ) // (/W1) loop control variable declared in the for-loop is used outside the for-loop scope
#endif


class PyrImage {
public:
  PyrImage(IplImage *im, int nblev);
  ~PyrImage();

  void build();

  static PyrImage *load(int level, const char *filename, int color, bool fatal = true);

  /* \param x the coordinate to translate
   * \param from the level in which x is specified
   * \param to the level to translate the coordinate into
   * \param method controls whether to return minimum or maximum possible
   *  coordinate, when translating from high to low levels.
   *  0 : return the minimum possible value
   *  1 : return the maximum possible value
   *  2 : return the average possible value
   * \return the translate coordinate
   */
  static int convCoord(int x, int from, int to=0, unsigned method = 0);

  static float convCoordf(float x, int from, int to=0);


  void setPixel(unsigned x, unsigned y, CvScalar& val);

  void set(CvScalar val = cvScalarAll(0));

  PyrImage *clone() const;

  IplImage *operator[](unsigned i) {return images[i];}

  void smoothLevel0(int kernelSize=3) 
  { 
    cvSmooth(images[0], images[0], CV_GAUSSIAN, kernelSize, kernelSize);
  }

  void setImageROI(CvRect rect);

  void resetImageROI();

  const int nbLev;
  IplImage **images;
};

#endif // PYRIMAGE_H