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copied!<p>I had written a blob tracking algorithm in VC++. I had run it in a console program, it just performed brilliantly.</p> <p>Now, I wanted to write the rest of my application in c#, so I made a dll of the VC++ code. And I am calling this dll from C# code. </p> <p>Now, in C#, after running for around 2 minutes, the application is throwing an error;</p> <pre><code>Insufficient memory (Out of memory) in function cvAlloc, .\cxalloc.cpp(111) </code></pre> <p>I am no where in the code, allocating memory using cvAlloc so I am just wondering what is causing it to throw this error. Moreover, the same code runs for hours when I run it in console without making it's dll. </p> <p>Can anyone please help me on what is causing it?</p> <p>Thank You.</p> <p>Code:</p> <pre><code>int NumberBlob = 0, PosX = 0, PosY = 0; IplImage *img = 0; IplImage *gray_img = 0; IplImage *thres_img = 0; IplImage *blobs_img = 0; int key = 0; /* Always check if the program can find a device */ if ( !capture ) { data->status = 0; return; } CBlobResult blobs; CBlob *currentBlob; CvRect rect; int frame_count = 0; int i = 0; int screen_x = GetSystemMetrics(SM_CXSCREEN); int screen_y = GetSystemMetrics(SM_CYSCREEN); int mouse_x,mouse_y; double x=0; double y=0; if( frame_count == 0 ) { /* Obtain a frame from the device */ img = cvQueryFrame( capture ); /* Always check if the device returns a frame */ if( !img ) { data->status = 1; return; } gray_img = cvCreateImage( cvGetSize(img), img->depth, 1); thres_img = cvCreateImage( cvGetSize(img), img->depth, 1); blobs_img = cvCreateImage( cvGetSize(img), img->depth, 3); } /* Obtain a frame from the device */ img = cvQueryFrame( capture ); /* Always check if the device returns a frame */ if( !img ) { data->status=2; return; } frame_count = frame_count + 1; /* Flip image once, after blob processing it is flipped back */ cvFlip(img,img,NULL); /* Convert image from Color to grayscale and then to binary (thresholded at 180) */ cvCvtColor(img,gray_img,CV_RGB2GRAY); cvThreshold(gray_img,thres_img,200,255,CV_THRESH_BINARY); /* Find Blobs that are White, Hence 'uchar backgroundColor = 0' (Black) */ blobs = CBlobResult(thres_img, NULL,0); /* Remove blobs if it does not cover minimum area specified below */ blobs.Filter( blobs, B_EXCLUDE, CBlobGetArea(),B_LESS,5,50); /* Number of blobs */ NumberBlob = blobs.GetNumBlobs(); /* 'i' points to blob 0, i.e., first blob */ /* If some blobs are detected then find the first blob */ if(i==0 && blobs.GetNumBlobs()>i) { currentBlocb = blobs.GetBlob(i); rect = currentBlob->GetBoundingBox(); PosX = currentBlob->MinX(); PosY = currentBlob->MinY(); currentBlob->FillBlob( blobs_img, CV_RGB(255,0,0)); } cvZero(blobs_img); data->X=PosX; data->Y=PosY; data->status=1; return; </code></pre> <p>This is all I am doing. This logic works fine when I run the code in an independent console application, but fails when I wrap it in a dll and call it from c#.</p> <p>Apart from this, I am having a struct too</p> <pre><code>struct resultData { int X, Y, status; char* error; }; </code></pre> <p>but I wonder if it would throw an OpenCV Exception, if any.</p>

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