How to find sx and sy and F intrinsix matrix in camera calibration

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Suraj Sudhakar 2022-9-14

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评论： William Rose 2022-9-19

I have a problem where I need to find the focal length of the camera at hand. I have calibrated the camera and obtained the parameters including fx = sx*F and fy=sy*F. But I have situation where I need to find the focal length 'F'.

How should I do it?

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Suraj Sudhakar 2022-9-19

@William Rose I used the camera calibration toolbox, but I have realised I do not need the focal length information. Thank you for your help.

William Rose 2022-9-19

@Suraj Sudhakar, you're welcome.

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采纳的回答

Matt J 2022-9-15

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编辑：Matt J 2022-9-15

You can only find the focal length if you know the pixel sizes at the image plane. There's probably no way you can get it, but I also tend to doubt that you really need it. Why do you think you do?

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Suraj Sudhakar 2022-9-19

@Matt J I wanted to locate the sharpest object in an image using the distance and focal length information. But you are correct. It is not really necessary. I have found other easier methods. But thank you for the answer.

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