fraye's profile - activity

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2019-07-03 05:25:10 -0600	received badge	● Supporter (source)
2019-07-03 05:25:08 -0600	marked best answer	Calibrating a PTZ camera I'm trying to retrieve the camera matrix for an Axis PTZ(Pan-Tilt-Zoom) camera in order to project a pixel back to 3D world space. The camera is placed at a certain height, viewing at a certain angle at an object, and I want to find the 3D coordinate of that detected object. Calibrating a PTZ camera doesn't really make sense to me as the focal length and possibly the distortion would change if the camera would e.g. zoom. How do you go about calibrating such cameras (i.e. cameras where the focal length can change)? Do there exist any existing projects that tackles this problem?
2019-07-03 05:25:08 -0600	received badge	● Scholar (source)
2019-07-02 01:56:11 -0600	received badge	● Enthusiast
2019-07-01 05:45:02 -0600	commented answer	Calculating intrinsic parameters from current optical zoom Thanks! Do you know any good way to find out the current FOV or focal length of a camera, given e.g. the current zoom le
2019-06-30 06:08:00 -0600	edited question	Calculating intrinsic parameters from current optical zoom Calculating intrinsic parameters from current optical zoom Hi, I was wondering – is it possible to achieve a decent app
2019-06-30 06:07:25 -0600	edited question	Calculating intrinsic parameters from current optical zoom Calculating intrinsic parameters from zoom Hi, I was wondering – is it possible to achieve a decent approximation of th
2019-06-30 06:06:05 -0600	asked a question	Calculating intrinsic parameters from current optical zoom Calculating intrinsic parameters from zoom Hi, I was wondering – is it possible to achieve a decent approximation of th
2019-06-27 15:31:17 -0600	asked a question	Calibrating a PTZ camera Calibrating a PTZ camera I'm trying to retrieve the camera matrix for an Axis PTZ camera in order to project a pixel bac