findChessboardCorners and findCirclesGrid don't work on large image?

asked 2020-10-12 21:08:55 -0500

updated 2020-10-13 01:32:43 -0500

berak gravatar image

I'm using an industrial camera of large resolution(5472x3648) to take images of my calibration pattern. Strangely, I found out that findChessboardCorners and findCirclesGrid fuctions only work when I resize the image to a smaller resolution, rows and columns both divided by 3 for example. If I use the 5472x3648 image directly, findChessboardCorners function just stucks there forever, while findCirclesGrid returns false(found no pattern). I don't know why. Can anyone help me?

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