opencv - Remove Shadow from Extracted Foreground -


i'm newbie opencv + c++ + visual studio 2012. , need learn them. here's code background substraction/foreground extraction, , need remove shadow foreground, , include them background model.

     include opencv2/opencv.hpp     include iostream     include vector
  int main(int argc, char *argv[]) {     cv::mat frame;     cv::mat back;     cv::mat fore;     cv::videocapture cap(0);      cv::backgroundsubtractormog2 bg;     bg.nmixtures = 3;     bg.bshadowdetection = true;     bg.nshadowdetection = 0; //resolved!     bg.ftau = 0.5;           //resolved!       std::vector<std::vector<cv::point> > contours;      cv::namedwindow("frame");     cv::namedwindow("background");      for(;;)     {         cap >> frame;         bg.operator ()(frame,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(frame,contours,-1,cv::scalar(0,0,255),2);          cv::imshow("frame",frame);         cv::imshow("background",back);         if(cv::waitkey(30) >= 0) break;     }     return 0; }

i've changed bshadowdetection = true or false nothing happened. should do? thanks. :)

nb: sorry bad english. :d

================

resolved!

if want remove shadow foreground, add code below after bg.bshadowdetection = true:

bg.nshadowdetection = 0 , bg.ftau = 0.5, see code above! :d

if shadow still detected, can adjust value.

bg.ftau = 0.5 means if pixel more 2 times darker not shadow.

bg.nshadowdetection default value 127. if wanna remove shadow set foreground min.threshold 127. or can set bg.nshadowdetection 0 me.

cheers! :d

resolved!

if want remove shadow foreground, add code below after bg.bshadowdetection = true:

bg.nshadowdetection = 0 , bg.ftau = 0.5, see code above in question! :d

if shadow still detected, can adjust value.

bg.ftau = 0.5 means if pixel more 2 times darker not shadow.

bg.nshadowdetection default value 127. if wanna remove shadow set foreground min.threshold 127. or can set bg.nshadowdetection 0 me.

cheers! :d


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