For a single channel matrix m, an integer c and a cv::Scalar m_avg, the operation

I am relatively new to OpenCV. I want to set the colour of individual pixels using img.at
I also kind of understand cv::Scalar, for example cv::Scalar(0,255,0) is green, cv::Scalar(255,0,0) is blue

I use Gstreamer’s appsink to get each frame of the video stream. Now I want to display it through opencv’s imshow window. The terminal is blocked after printing a frame of message. What is the problem?

I am planning to detect a orange table tennis ball using OpenCV in Visual Studio and make a table tennis machine. My plan is to print two continuous coordinates only once when each time the ball is moving toward the machine(to calculate other info).

#include<opencv2/imgcodecs.hpp> #include<opencv2/highgui.hpp> #include<string> int main() { std::string path = “wallpaperflare.jpg”; cv::Mat img=cv::imread(path); cv::imshow(“Frame”,img); cv::waitKey(5000); cv::VideoCapture cam(0); while (1) { cam.read(img); cv::imshow(“VideoFrame”,img); cv::waitKey(1); } return 0; } I opened the first frame “Frame” for 5 seconds, but the program didn’t close the frame after 5 seconds before proceeding with the next line. Instead after 5 secs […]

I’m developing a hail damage scanner that detects and measures even the smallest dents on a car body using high-resolution 3D models. I’m using C++ and OpenCV for this purpose. My goal is to accurately identify and quantify the size and position of dents.

i use OpenCvSharp to record video,10 minute per file,but the code i wrote must be somewhere wrong, when i see the video,the video takes 12 minutes 29 seconds.here is the code.

I installed the opencv library by using apt:

Actually I’m a complete beginner in opencv and in native C++ concepts so please excuse me if my question is so simple. Basically I want to convert an image to Black&White by using native C for that. can anyone please help me to learn this concept ?

I have a CV_32F image that I want to save as file with different extensions. I use cv::imencode