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/* Copyright (c) 2012 Patrick Ruoff
* Copyright (c) 2015-2016 Stanislaw Halik <sthalik@misaki.pl>
*
* 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.
*/
#pragma once
#include "pt-api.hpp"
#include <vector>
#include <opencv2/core.hpp>
#include <opencv2/imgproc.hpp>
namespace pt_module {
using namespace numeric_types;
struct blob final
{
f radius, brightness;
vec2 pos;
cv::Rect rect;
blob(f radius, const vec2& pos, f brightness, const cv::Rect& rect);
};
class PointExtractor final : public pt_point_extractor
{
public:
// extracts points from frame and draws some processing info into frame, if draw_output is set
// dt: time since last call in seconds
void extract_points(const pt_frame& frame,
pt_preview& preview_frame, bool preview_visible,
std::vector<vec2>& points) override;
explicit PointExtractor(const QString& module_name);
private:
static constexpr int max_blobs = 16;
pt_settings s;
cv::Mat1b frame_gray_unmasked, frame_bin, frame_gray;
cv::Mat1f hist;
std::vector<blob> blobs;
cv::Mat1b ch[3];
void ensure_channel_buffers(const cv::Mat& orig_frame);
void ensure_buffers(const cv::Mat& frame);
void extract_single_channel(const cv::Mat& orig_frame, int idx, cv::Mat1b& dest);
void filter_single_channel(const cv::Mat& orig_frame, float r, float g, float b, cv::Mat1b& dest);
void color_to_grayscale(const cv::Mat& frame, cv::Mat1b& output);
void threshold_image(const cv::Mat& frame_gray, cv::Mat1b& output);
};
} // ns impl
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