No corners could be extracted for low resolution images( confidence image )

[arenas7307979]

I am trying to calibrate a tof camera（TI TINTIN)

the problem is that for every dataset I always receive the error [FATAL] [1572255263.563560]: No corners could be extracted for ...

the image below.

[sebasantibanez]

Hi @arenas7307979, I'm in the same boat. Did you manage to solve it?

[arenas7307979]

I think it has something problem from the sharpness of the april_calibration image, which leads to the lack of feature points, maybe u can using general chessboard to calibration

[goldbattle]

I think tuning the camera parameters or doing some preprocessing will be necessary to have enough gradient for detection. If you do find a solution, feel free to post for others to see. Additionally, posting a bag would help others debug.

[tejalbarnwal]

hey, it might be possible that the images are mirrored. Please check for the same