MARE's Computer Vision Study.: OpenCV Drawing Example, (line, circle, rectangle, ellipse, polyline, fillConvexPoly, putText, drawContours)
sending OpenCV Mat from c++ to python, using buffered port · Discussion #306 · robotology/community · GitHub
![c++ - OpenCV cv::dnn::Net::getBlob return dnn::Blob::matRefConst has rows == -1 and cols == -1 - Stack Overflow c++ - OpenCV cv::dnn::Net::getBlob return dnn::Blob::matRefConst has rows == -1 and cols == -1 - Stack Overflow](https://i.stack.imgur.com/eJI2X.png)
c++ - OpenCV cv::dnn::Net::getBlob return dnn::Blob::matRefConst has rows == -1 and cols == -1 - Stack Overflow
![c++ - Creating bigger image out of small image Mat [opencv, background subtraction] - Stack Overflow c++ - Creating bigger image out of small image Mat [opencv, background subtraction] - Stack Overflow](https://i.stack.imgur.com/8C5Hc.png)