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2017-09-15 13:10:19 -0600	answered a question	opencv3.3.0 undefined reference to cv::String::deallocate() (in cvstd.hpp) Well, I left this problem to stew for a while and worked on other things with the Raspberry Pi. I did a lot of trial an
2017-09-07 15:48:03 -0600	commented question	opencv3.3.0 undefined reference to cv::String::deallocate() (in cvstd.hpp) Incidentally this is the code that is being compiled: include <cstdio> include <opencv2 opencv.hpp=""> us
2017-09-07 15:33:01 -0600	asked a question	opencv3.3.0 undefined reference to cv::String::deallocate() (in cvstd.hpp) opencv3.3.0 undefined reference to cv::String::deallocate() (in cvstd.hpp) I am using Visual Studio 2017 Community editi
2017-08-24 14:13:30 -0600	commented question	Use OpenCV to obtain PiCar MJPG-streamer video Dumb, dumb, dumb me!!! Can you believe it was a typo!! The IP address should have been 192.168.1.81:8080 not 192,168.0.81:8080. I must have looked at that line a hundred times and never saw the error!! As a newbie, I can't answer my own question for another 23 hrs but thought I should do something to not waste people's time. Thanks all for your time.
2017-08-23 14:05:27 -0600	asked a question	Use OpenCV to obtain PiCar MJPG-streamer video I have built a SunFounder PiCar-V (Raspberry Pi 3 running Raspbian) which uses a Python server "running a software written for the MJPG-streamer project". I wish to capture the video stream with OpenCV 3.30 x64 in C++. Below is my test program which shows the result occurring. // ============================================================================ // PiCarVideoTest - Testing how to use OpenCV to open PiCar video stream. // Debug x64 version with property sheet: // C++ - Additional Include Directories: $(OPENCV_BUILD)\include // Linker - Additional Library Directories: $(OPENCV_BUILD)\x64\vc14\lib // Linker - Additional Dependencies: opencv_world330d.lib;... // Result of program - vcap.open fails: // warning: Error opening file(/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:792) // warning: http://192.168.0.81:8080/?action=stream;dummy=param.mjpg (/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:793) // ============================================================================ #include <opencv2\opencv.hpp> #include <opencv2\highgui.hpp> using namespace cv; int main(int, char**) { VideoCapture vcap; Mat image; // Setup video stream location per internet research results. const std::string videoStreamAddress = "http://192.168.0.81:8080/?action=stream;dummy=param.mjpg"; // Open the video stream and check that open was successful. if (!vcap.open(videoStreamAddress)) { std::cout << "Error opening video stream or file" << std::endl; return -1; } ... It appears OpenCV is attempting to treat the internet address as a file name. I have fought this problem for two days and have not been successful at solving it. Any help would be greatly appreciated!!