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/* Copyright (c) 2012 Patrick Ruoff
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#ifndef POINTEXTRACTOR_H
#define POINTEXTRACTOR_H
#include <opencv2/opencv.hpp>
#include <opencv2/imgproc/imgproc_c.h>
// ----------------------------------------------------------------------------
// Extracts points from an opencv image
class PointExtractor
{
public:
// extracts points from frame and draws some processing info into frame, if draw_output is set
// dt: time since last call in seconds
// WARNING: returned reference is valid as long as object
const std::vector<cv::Vec2f>& extract_points(cv::Mat frame, float dt, bool draw_output);
const std::vector<cv::Vec2f>& get_points() { return points; }
PointExtractor();
int threshold_val;
int threshold_secondary_val;
int min_size, max_size;
protected:
std::vector<cv::Vec2f> points;
cv::Mat frame_last;
};
#endif //POINTEXTRACTOR_H
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