NerdyDroneBuilder's profile - activity

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2017-08-09 14:31:22 -0600	answered a question	How to get pixel's value from a picture? Everyone posts code, none of it was really helpful. Here's how you can do it: Also posted here on PasteBin: https://pastebin.com/tA1R8Qtm // ----------------------------------------------------- // ---------- FIND AVG LUMINENCE OF FRAME -------------- // ----------------------------------------------------- // Assuming you have a cv::Mat to start with called "input_mat" cv::Mat grayMat; cv::cvtColor(input_mat, grayMat, CV_BGR2GRAY); int Totalintensity = 0; for (int i=0; i < grayMat.rows; ++i){ for (int j=0; j < grayMat.cols; ++j){ Totalintensity += (int)grayMat.at<uchar>(i, j); } } // Find avg lum of frame float avgLum = 0; avgLum = Totalintensity/(grayMat.rows * grayMat.cols);
2017-07-25 12:36:11 -0600	received badge	● Editor (source)
2017-07-25 12:35:40 -0600	answered a question	Allied Vision VIMBA and OpenCV Hi all: I spent a lot of time trying to find the best way to get Vimba and OpenCV to play together - here's what I have. Crux of the issue: FramePtr pFrame; VmbUchar_t *pImage = Null; VmbUint32_t timeout = 500; VmbUint43_t nWidth = 0; VmbUint43_t nHeight = 0; if (VmbErrorSuccess == cameras[ 0 ]->Camera::AcquireSingleImage( pFrame, timeout ) ) { if (VmbErrorSuccess != pFrame->getWidth( nWidth ); std::cout << "FAILED to aquire width of frame!" << std::endl; if (VmbErrorSuccess != pFrame->getWidth( nHeight ); std::cout << "FAILED to aquire height of frame!" << std::endl; if (VmbErrorSuccess != pFrame->getImage( pImage ); std::cout << "FAILED to acquire image data of frame!" << std::endl; cv::Mat cvMat = cv::Mat(nHeight, nWidth, CV_8UC1, pImage ); cv::cvtColor(cvMat, cvMat, CV_BayerBG2RGB); // My camera is set up to publish BayerBG. It's an efficient codec. cv::imshow("Our Great Window", cvMat); cv::waitKey(1); } Also below is more of my program (~250 lines) if you want to see how I also find my cameras, open them, and store that information. https://pastebin.com/z7i6dRbn Good luck. Good luck to all of you!