CurvatureExtractor.h

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/********************************************************************
**                Image Component Library (ICL)                    **
**                                                                 **
** Copyright (C) 2006-2013 CITEC, University of Bielefeld          **
**                         Neuroinformatics Group                  **
** Website: www.iclcv.org and                                      **
**          http://opensource.cit-ec.de/projects/icl               **
**                                                                 **
** File   : ICLCV/src/ICLCV/CurvatureExtractor.h                   **
** Module : ICLCV                                                  **
** Authors: Tobias Röhlig                                          **
**                                                                 **
**                                                                 **
** GNU LESSER GENERAL PUBLIC LICENSE                               **
** This file may be used under the terms of the GNU Lesser General **
** Public License version 3.0 as published by the                  **
**                                                                 **
** Free Software Foundation and appearing in the file LICENSE.LGPL **
** included in the packaging of this file.  Please review the      **
** following information to ensure the license requirements will   **
** be met: http://www.gnu.org/licenses/lgpl-3.0.txt                **
**                                                                 **
** The development of this software was supported by the           **
** Excellence Cluster EXC 277 Cognitive Interaction Technology.    **
** The Excellence Cluster EXC 277 is a grant of the Deutsche       **
** Forschungsgemeinschaft (DFG) in the context of the German       **
** Excellence Initiative.                                          **
**                                                                 **
********************************************************************/

#pragma once

#include <ICLCore/Core.h>
#include <ICLUtils/Uncopyable.h>
#include <ICLMath/DynMatrix.h>
#include <ICLCV/ImageRegion.h>
#include <stdint.h>

namespace icl {
    namespace cv {

    class ICLCV_API CurvatureExtractor : utils::Uncopyable {

    public:

        typedef math::DynMatrix<float> DMatF;
        typedef std::vector<float> FloatHist;
        typedef std::vector<utils::Point> PointVector;
        typedef std::vector<int> IndexVector;

        CurvatureExtractor(const uint32_t curv_radius, const uint32_t steps = 1,
                           const bool thinned_contour = true);

        void extractContourCurvature(const PointVector &contour,
                                     const core::Img8u &insideLookup,
                                     const uint32_t regionLookupId,
                                     std::vector<int> &indices,
                                     FloatHist &hist,
                                     DMatF &dist, DMatF &curvature);

        void extractRegionCurvature(const std::vector<ImageRegion> &regions,
                                    const core::Img8u &insideLookup,
                                    const std::vector<uint32_t> &regionLookupIds,
                                    std::vector<FloatHist> &curvatureHists);

        const std::vector< DMatF > &getDistanceMatrices() { return m_distances; }

        const std::vector< DMatF > &getCurvatureMatrices() { return m_curvatures; }

        const std::vector< IndexVector > &getUsedIndices() { return m_used_indices; }

        uint32_t getCurvatureRadius() { return m_curv_radius; }
        void setCurvatureRadius(const uint32_t radius) { m_curv_radius = radius; }

        uint32_t getStepSize() { return m_steps; }
        void setStepSize(const uint32_t steps) { m_steps = steps; }

        bool getUseThinnedContour() { return m_thinned_contour; }
        void setUseThinnedContour(const bool thinned_contour) { m_thinned_contour = thinned_contour; }

    protected:

        uint32_t m_curv_radius;
        uint32_t m_steps;

        bool m_thinned_contour;

        std::vector< DMatF > m_distances;
        std::vector< DMatF > m_curvatures;
        std::vector< IndexVector > m_used_indices;

        inline
        int restOp(int x, int y) {
            int r = x%y;
            return r<0 ? y+r : r;
        }

    };

    } //cv
} //icl