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POError in BackgroundSubtraction Mog2
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  1. POError in BackgroundSubtraction Mog2
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    copied!<p>I am using opencv 2.4.4 and when i run this algorithm on it , it give me the error on <code>nmixtures</code> and <code>bShadowDetection</code></p> <pre><code>#include &lt;iostream&gt; #include &lt;sys/stat.h&gt; #include &lt;stdio.h&gt; #include &lt;conio.h&gt; #include &lt;string.h&gt; #include &lt;stdlib.h&gt; #include &lt;opencv/cv.h&gt; #include "opencv2/features2d/features2d.hpp" #include &lt;opencv/highgui.h&gt; #include "opencv2/opencv.hpp" #include "opencv2/core/core.hpp" #include "opencv2/nonfree/features2d.hpp" #include "opencv2/highgui/highgui.hpp" #include "opencv2/calib3d/calib3d.hpp" #include &lt;vector&gt; #pragma comment (lib , "opencv_core244d.lib") #pragma comment (lib ,"opencv_highgui244d.lib") #pragma comment(lib , "opencv_imgproc244d.lib") #pragma comment(lib ,"opencv_video244.lib") using namespace cv; int main(int argc, char *argv[]) { cv::Mat frame; cv::Mat back; cv::Mat fore; cv::VideoCapture cap("try2.avi"); cap &gt;&gt; frame; cv::initModule_video(); cv::BackgroundSubtractorMOG2 bg(100, 16, true); // history is an int, distance_threshold is an int (usually set to 16), shadow_detection is a bool bg.set("nmixtures", 3); bg(frame, fore, -1); //learning_rate = -1 here std::vector&lt;std::vector&lt;cv::Point&gt; &gt; contours; cv::namedWindow("Frame"); cv::namedWindow("Background"); for(;;) { cap &gt;&gt; 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) &gt;= 0) break; } return 0; } </code></pre> <p>Error's</p> <pre><code>error C2248: 'cv::BackgroundSubtractorMOG2::nmixtures' : cannot access protected member declared in class 'cv::BackgroundSubtractorMOG2' error C2248: 'cv::BackgroundSubtractorMOG2::bShadowDetection' : cannot access protected member declared in class 'cv::BackgroundSubtractorMOG2' </code></pre> <p>When i use it like below , it didn't give syntax error , but give me error at runtime</p> <pre><code>bg.set("nmixtures", 3); bg.set("detectShadows", false); </code></pre> <p>Error</p> <pre><code>Unhandled exception at 0x7617812f in WK01.exe: Microsoft C++ exception: cv::Exception at memory location 0x001de2d0.. opencv error : Bad argument (no parameter nmixture is found) in unknown function </code></pre> <p>Thanks</p>
 

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