histogram.h

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/*
 * Software License Agreement (Modified BSD License)
 *
 *  Copyright (c) 2012, PAL Robotics, S.L.
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#ifndef _PAL_HISTOGRAM_UTIL_H_
#define _PAL_HISTOGRAM_UTIL_H_

#include <vector>

#include <opencv2/core/core.hpp>
#include <opencv2/imgproc/imgproc.hpp>


namespace pal_vision_util
{
    void calcHSVHist(const cv::Mat& src, cv::MatND& histogram);

    void calcHSVHist(const std::vector<cv::Mat>& src, std::vector<cv::MatND>& histograms);

    void calcHSVHist(const std::vector<cv::Mat>& src, cv::MatND& histogram);

    //transform a histogram into an image
    cv::Mat histogramImage(const cv::MatND& hist);

    void showHist(const cv::MatND& hist, bool waitKey = true);

    void backProject(const cv::Mat& image,
                     const cv::MatND& hist,
                     int threshold,
                     cv::Mat& result,
                     int dilateIterations = 0,
                     int dilateSize = 3,
                     int erodeIterations = 0,
                     int erodeSize = 3);
}

#endif // _PAL_HISTOGRAM_UTIL_H_