Im trying to copy a part of Mat to other matrix, this is my code:
Mat OCRprocess;
OCRImage(Rect(plates[i].x, plates[i].y, plates[i].width, plates[i].height)).copyTo(OCRprocess);
ROI: x: 1200 y: 608 w: 356 h: 89 (data from cascade detector)
This is return:
OpenCV Error: Assertion failed (0 <= roi.x && 0 <= roi.width && roi.x + roi.width <= m.cols && 0 <= roi.y && 0 <= roi.height && roi.y + roi.height <= m.rows) in cv::Mat::Mat, file C:\\builds\\master_PackSlave-win64-vc12-shared\\opencv\\modules\\ core\\src\\matrix.cpp, line 495
You need to initialize OcrProcess
of the same size of the rectangles before calling copyTo
:
// Your rect
Rect r(plates[i].x, plates[i].y, plates[i].width, plates[i].height);
// Initialize the destination image
Mat OCRprocess(r.height, r.width, OCRImage.type());
// Copy
OCRImage(Rect).copyTo(OCRprocess);
Or, more simply, using clone
:
Mat OCRprocess = OCRImage(Rect(plates[i].x, plates[i].y, plates[i].width, plates[i].height)).clone();
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