Logitech C920 with IR blocker removed and red filter added. OpenCV code using BackgroundSubtractorMOG2

cvVisiblePlusInfrared.cpp

#include <opencv2/opencv.hpp>

#include <iostream>
#include <vector>

using namespace cv;

int
main (int argc, char *argv[])
{
  cv::Mat frame;
  cv::Mat back;
  cv::Mat fore;
  cv::VideoCapture cap(0);
  
  
  cap.set(CV_CAP_PROP_FRAME_WIDTH, 640);
  cap.set(CV_CAP_PROP_FRAME_HEIGHT, 480);
  
//  cap.set(CV_CAP_PROP_AUTO_EXPOSURE, 0);
//  cap.set(CV_CAP_PROP_EXPOSURE, 2);

  
  cv::BackgroundSubtractorMOG2 bg;
  bg.set ("nmixtures", 3);

  //bg.bShadowDetection = false;
  std::vector < std::vector < cv::Point > >contours;
  
  namedWindow("b");
  namedWindow("g");
  namedWindow("r");
  namedWindow("rgb");
  
  resizeWindow("rgb",640,480);
  resizeWindow("r",640,480);
  resizeWindow("g",640,480);
  resizeWindow("b",640,480);

  
  moveWindow("rgb", 0, 0);
  moveWindow("r", 640, 0);
  moveWindow("g", 0, 530);
  moveWindow("b", 640, 530);
  
  cv::Mat bgr[3];   //destination array
  
  for (;;)
  {
    cap >> frame;
    
    Mat blue(frame.size(),frame.type());
    vector<Mat> bgr;
    
    split(frame, bgr);
    
    cvtColor(bgr[0],blue,CV_GRAY2RGB);

    
    bg.operator()(blue, fore);
    bg.getBackgroundImage(back);
    
    cv::erode (fore, fore, cv::Mat ());
    cv::dilate (fore, fore, cv::Mat ());
    cv::findContours (fore, contours, CV_RETR_EXTERNAL,
                      CV_CHAIN_APPROX_NONE);
    cv::drawContours (blue, contours, -1, cv::Scalar (0, 0, 255), 2);
    
    imshow("rgb", frame);
    imshow("b", blue);
    imshow("g", bgr[1]);
    imshow("r", bgr[2]);
    
    cv::cvtColor(bgr[0],frame,CV_GRAY2RGB);

  
    if (cv::waitKey (30) >= 0)
      break;
  }
  return 0;
}