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How to know height and distance of the object from camera??

distance_from_camera

asked 2018-06-30 00:34:50 -0600

Razz1234
1 ●1

I have a pedestrian detection algorithm which draw bounding box around the detected pedestrian.Now i want to calculate the height of pedestrian in real world and the distance of pedestrian from the camera.How can i do it??

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answered 2018-06-30 00:44:06 -0600

berak
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updated 2018-06-30 01:28:05 -0600

have a look at the pinhole camera model

the gist is: there are fov, distance and size, and you need know 2 of those, to calulate the 3rd.

again, this is a limitation of using a single rgb camera. using a stereo rig, or an ir sensor (like a kinect), you can acquire depth images, which wil give you the distance / height