How to use Opencv to read the camera

This article will explain in detail how to use Opencv to read the camera. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

First test the camera, open the Jetson TX1 terminal and write the command: nvgstcapture-1.0, and the camera will get up.

Simply use a few commands in the manual

The resolution, height and width of the prev_res preview screen, using a CSI camera, the range is 2 to 12 (5632x4224) e.g., nvgstcapture-1.0-- prev-res=3

-- cus-prev-res customizes preview resolution, width and height. Only CSI camera e.g.and nvgstcapture-1.0-- cus-prev-res=1920x1080 are supported.

If multiple commands are used at the same time! If you want to turn off the camera, enter Q directly at the terminal, press enter to capture the picture, enter j at the terminal and press enter, and the picture will be saved in the current directory.

Use Opencv to read the camera

Be sure to install gstreamer as a dependency

# include # include using namespace cv; using namespace std; int main (int argc, char** argv) {VideoCapture cap ("nvcamerasrc! Video/x-raw (memory:NVMM), width= (int) 1280, height= (int) 720 format = (string) I420, framerate= (fraction) 24 Lexi! Nvvidconv flip-method=2! Video/x-raw, format= (string) BGRx! Videoconvert! Video/x-raw, format= (string) BGR! Appsink "); if (! cap.isOpened ()) {cout frame; imshow (" original ", frame); if ((char) waitKey (30) = = 27) break;} return 0 } this is the end of the article on "how to use Opencv to read the camera". I hope the above content can be of some help to you so that you can learn more knowledge. if you think the article is good, please share it for more people to see.