How to set camera resolution (webcam) with opencv?

asked 2014-06-02 00:17:13 -0600

norzanbzura
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updated 2014-06-02 01:33:03 -0600

berak
32993 ●7 ●81 ●312

I have a problem which I don't know how to create a function to set camera resolution on webcam with openCV. There's anyone can help me? Thank you in advance.

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answered 2014-06-02 01:13:17 -0600

Witek

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updated 2014-06-02 01:14:12 -0600

cv::VideoCapture cap;
if (!cap.isOpened())  // check if succeeded to connect to the camera
   CV_Assert("Cam open failed");

cap.set(CV_CAP_PROP_FRAME_WIDTH,640);
cap.set(CV_CAP_PROP_FRAME_HEIGHT,480);

http://docs.opencv.org/modules/highgui/doc/reading_and_writing_images_and_video.html#videocapture-set

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then if you use OpenCV 3 just replace the last instructions with these:

cap.set(cv::CAP_PROP_FRAME_WIDTH, valueX); // valueX = your wanted width
cap.set(cv::CAP_PROP_FRAME_HEIGHT, valueY); // valueY = your wanted heigth

Doombot ( 2014-10-20 10:22:37 -0600 )edit

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Asked: 2014-06-02 00:17:13 -0600

Seen: 122,962 times

Last updated: Jun 02 '14

How to set camera resolution (webcam) with opencv? edit