How to rotate captured video from camera

asked 2018-06-21 22:19:01 -0600

Derick
1 ●1 ●2 ●3

I have OpenCV project using C language. I wish to rotate the captured video from camera, how I can do that? What is the rotate function in OpenCV? My code as below

static CvCapture * cap;

cap = cvCaptureFromCAM(cam_index);

Flip(cap, 0);

But it got error. How I can rotate my video? Please help

answered 2018-06-22 01:13:16 -0600

berak
32993 ●7 ●81 ●312

opencv's c-api is deprecated since 2010, and no more maintained. YOU MUST NOT USE IT.

you'll HAVE TO use c++ (cv::VideoCapture), and functions like cv::flip or cv::rotate

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OMG. The problem now is I maintain somebody code wrote before and enhance it. Not enough time for me to re-write the whole project. Any similar project or code can share to me as reference? Tahnsk a lot

Derick ( 2018-06-22 04:46:33 -0600 )edit

clearly, either abandon it and look for an alternative, or rewrite it from scratch.

Any similar project or code can share to me as reference ?

can you be a bit more specific about your requirements ?

also: https://docs.opencv.org/master/d9/df8...

berak ( 2018-06-22 05:00:47 -0600 )edit

I'm using a logitech web cam to do real time object detection in Ubuntu 16.04. I wish to rotate the output of the video on the screen.

Derick ( 2018-06-24 02:50:18 -0600 )edit

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