ImagePyramid.h

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/*
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
 
#pragma once
 
#include <vector>
 
#include "../system/FreestyleConfig.h"
 
#ifdef WITH_CXX_GUARDEDALLOC
#  include "MEM_guardedalloc.h"
#endif
 
namespace Freestyle {
 
class GrayImage;
 
class ImagePyramid {
 protected:
  std::vector<GrayImage *> _levels;
 
 public:
  ImagePyramid()
  {
  }
  ImagePyramid(const ImagePyramid &iBrother);
  // ImagePyramid(const GrayImage& level0, unsigned nbLevels);
  virtual ~ImagePyramid();
 
  virtual void BuildPyramid(const GrayImage &level0, unsigned nbLevels) = 0;
 
  virtual void BuildPyramid(GrayImage *level0, unsigned nbLevels) = 0;
 
  virtual GrayImage *getLevel(int l);
  virtual float pixel(int x, int y, int level = 0);
 
  virtual int width(int level = 0);
 
  virtual int height(int level = 0);
 
  inline int getNumberOfLevels() const
  {
    return _levels.size();
  }
 
#ifdef WITH_CXX_GUARDEDALLOC
  MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:ImagePyramid")
#endif
};
 
class GaussianPyramid : public ImagePyramid {
 protected:
  float _sigma;
 
 public:
  GaussianPyramid(float iSigma = 1.0f) : ImagePyramid()
  {
    _sigma = iSigma;
  }
 
  GaussianPyramid(const GrayImage &level0, unsigned nbLevels, float iSigma = 1.0f);
  GaussianPyramid(GrayImage *level0, unsigned nbLevels, float iSigma = 1.0f);
  GaussianPyramid(const GaussianPyramid &iBrother);
  virtual ~GaussianPyramid()
  {
  }
 
  virtual void BuildPyramid(const GrayImage &level0, unsigned nbLevels);
  virtual void BuildPyramid(GrayImage *level0, unsigned nbLevels);
 
  /* accessors */
  inline float getSigma() const
  {
    return _sigma;
  }
 
  /* modifiers */
};
 
} /* namespace Freestyle */