118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __IMAGEPYRAMID_H__
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#define __IMAGEPYRAMID_H__
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/** \file
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* \ingroup freestyle
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* \brief Class to represent a pyramid of images
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*/
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#include <vector>
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#include "../system/FreestyleConfig.h"
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#ifdef WITH_CXX_GUARDEDALLOC
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# include "MEM_guardedalloc.h"
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#endif
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namespace Freestyle {
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class GrayImage;
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class ImagePyramid {
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protected:
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std::vector<GrayImage *> _levels;
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public:
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ImagePyramid()
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{
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}
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ImagePyramid(const ImagePyramid &iBrother);
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// ImagePyramid(const GrayImage& level0, unsigned nbLevels);
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virtual ~ImagePyramid();
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/*! Builds the pyramid.
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* must be overloaded by inherited classes.
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* if nbLevels==0, the complete pyramid is built
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*/
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virtual void BuildPyramid(const GrayImage &level0, unsigned nbLevels) = 0;
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/*! Builds a pyramid without copying the base level */
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virtual void BuildPyramid(GrayImage *level0, unsigned nbLevels) = 0;
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virtual GrayImage *getLevel(int l);
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/*! Returns the pixel x,y using bilinear interpolation.
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* \param x:
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* the abscissa specified in the finest level coordinate system
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* \param y:
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* the ordinate specified in the finest level coordinate system
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* \param level:
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* the level from which we want the pixel to be evaluated
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*/
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virtual float pixel(int x, int y, int level = 0);
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/*! Returns the width of the level-th level image */
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virtual int width(int level = 0);
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/*! Returns the height of the level-th level image */
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virtual int height(int level = 0);
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/*! Returns the number of levels in the pyramid */
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inline int getNumberOfLevels() const
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{
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return _levels.size();
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}
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#ifdef WITH_CXX_GUARDEDALLOC
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MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:ImagePyramid")
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#endif
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};
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class GaussianPyramid : public ImagePyramid {
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protected:
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float _sigma;
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public:
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GaussianPyramid(float iSigma = 1.f) : ImagePyramid()
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{
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_sigma = iSigma;
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}
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GaussianPyramid(const GrayImage &level0, unsigned nbLevels, float iSigma = 1.0f);
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GaussianPyramid(GrayImage *level0, unsigned nbLevels, float iSigma = 1.0f);
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GaussianPyramid(const GaussianPyramid &iBrother);
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virtual ~GaussianPyramid()
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{
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}
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virtual void BuildPyramid(const GrayImage &level0, unsigned nbLevels);
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virtual void BuildPyramid(GrayImage *level0, unsigned nbLevels);
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/* accessors */
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inline float getSigma() const
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{
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return _sigma;
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}
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/* modifiers */
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};
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} /* namespace Freestyle */
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#endif // __IMAGEPYRAMID_H__
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