Calibration of a picture from a webcam

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.NET2.0

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Hello,

I have a problem with calibration of the image from the webcam.
I do motion detection and take de degrees for turning an eye (drawing in DirectX).

I place my camera in a look down position. But it is possible that the camera don't look straight down.

Now the problem is that the image is distorted. That gives me wrong degrees. There for I need to do calibration but so far I don't succeed in it.

Can anybody helps me.

Thanks a lot

Posted 9-Nov-11 21:27pm

Hardghost

Updated 9-Nov-11 23:06pm

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Manfred Rudolf Bihy · Answer 1 · 2011-11-10T00:51:00

Solution 1

There is a great article here on CP that has the logic built in that you require: Realtime Webcam Sudoku Solver[^]. It's a great article by our fellow CPian Bojan Banko[^]. Look out for the step How to detect rotation.

Cheers!

—MRB

Posted 10-Nov-11 0:51am

Manfred Rudolf Bihy

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Hardghost 14-Nov-11 3:10am

It doesn't help because it's for the degrees on the picture that i have but the degrees on the picture are not always the same as in real time. You stand on a place that is 30° from the monitor. But on the picture is it 45°. So my eye look at a point at 45° in place of 30°. That's what i need to solve