#include "VideoChangeScore.h"

VideoChangeScore::VideoChangeScore() {

}

int VideoChangeScore::EvalChange(cv::Mat &image) {
    if (image.empty())return 0;

    cv::blur(image, image, cv::Size(16, 9));
    if (backGround.empty()) {
        image.copyTo(backGround);
    } else {
        backGround = image * 0.1 + backGround * 0.9;
    }
    cv::absdiff(image, backGround, change);
    double min, max;
    cv::minMaxLoc(change, &min, &max);
    return max;
}

cv::Mat VideoChangeScore::getBackGround() const {
    return backGround;
}

cv::Mat VideoChangeScore::getChange() const {
    return change;
}