OpenCV Mat types
I'm currently working on reading in a depth image with OpenCV and converting it to a point cloud. After wrestling with data types for a while, I came upon a tremendously useful listing of the OpenCV Mat types and their corresponding numerical values, along with the data types corresponding to those map types. For example, a CV_16U OpenCV Mat outputs 2 with the type() member function, and stores the channel data as unsigned shorts. The mapping is posted on this blog here.
E.g.:
E.g.:
cv::Mat depthImage; depthImage = cv::imread("banana_1_1_1_depth.png", CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR ); // Read the file if(! depthImage.data ) // Check for invalid input { std::cout << "Could not open or find the image" << std::endl ; return -1; } std::cout << "Size of depthImage:\t" << depthImage.size() << std::endl; std::cout << "Type of depthImage:\t" << depthImage.type() << std::endl; std::cout << "Depth image at coord 0,0:\t" << depthImage.at<ushort>(0,0) << std::endl;
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