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Hi at all!!! I'm reading video from my memory and I execute some operation on it. When I read video I take a single frame (320x240) , I separe it with 10x10 grid and I save the single "box" (10x10) in a vector (Mat recostruction[768]). I create an other vector wich contains bool value. Each cell of vector contains bool value. Based on the value of the cells I recostruct the single box with different background color (true= red background image, false=normal backgrund image). When I show my output the output window is black and I don't show my rebuilt video. How I fix this problem? thank you for your time!

CvCapture* capture = cvCreateFileCapture("Scene1.avi"); IplImage* frame; while(true) { frame = cvQueryFrame(capture); if(!frame) break; Mat current(frame); Mat ricostruzione[768]; Mat output = cv::Mat::zeros(240, 320, CV_8UC3); int aa[768]; int bb[768]; for(int a=0; a<320; a+=10) { for(int b=0; b<240; b+=10) { Mat SUPPORT_2 (current, Rect(a,b,10,10)); ricostruzione[conteggio_c] = SUPPORT_2.clone(); aa[conteggio_c] = a; bb[conteggio_c] = b; /--------------------------------------------- some operations ----------------------------------------------/ conteggio_c++; } } conteggio_c = 0; bool recost[768]; for ( int t=0; t<768; t++) { /-------------------------------------- some operations and filling bool vector ---------------------------------------/ } imshow("original", current); waitKey(1); imshow("OUTPUT", output); waitKey(1); }

Hi at all!!! I'm reading video from my memory and I execute some operation on it. When I read video I take a single frame (320x240) , I separe it with 10x10 grid and I save the single "box" (10x10) in a vector (Mat recostruction[768]). I create an other vector wich contains bool value. Each cell of vector contains bool value. Based on the value of the cells I recostruct the single box with different background color (true= red background image, false=normal backgrund image). When I show my output the output window is black and I don't show my rebuilt video. How I fix this problem? thank you for your time!

CvCapture* capture = cvCreateFileCapture("Scene1.avi");
IplImage* frame;
while(true)
{
frame = cvQueryFrame(capture);
if(!frame) break;
Mat current(frame);
Mat ricostruzione[768];
Mat output = cv::Mat::zeros(240, 320, CV_8UC3);
int aa[768];
int bb[768];
for(int a=0; a<320; a+=10)
{
for(int b=0; b<240; b+=10)
{
Mat SUPPORT_2 (current, Rect(a,b,10,10));
ricostruzione[conteggio_c] = SUPPORT_2.clone();
aa[conteggio_c] = a;
bb[conteggio_c] = b;
/---------------------------------------------
/*---------------------------------------------
 some operations
----------------------------------------------/
----------------------------------------------*/
 conteggio_c++;
}
}
conteggio_c = 0;
bool recost[768];
for ( int t=0; t<768; t++)
{
/--------------------------------------
/*--------------------------------------
 some operations and filling bool vector
---------------------------------------/
---------------------------------------*/
 }
imshow("original", current);
waitKey(1);
imshow("OUTPUT", output);
waitKey(1);
}
}