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Module DocumentationJust follow the on-screen prompts to calibrate your camera. The calibration results will be saved into /jevois[pro]/share/camera/ on microSD and will be automatically loaded when using a machine vision module that uses camera calibration, for example DemoArUco or FirstVision. The basic workflow is:
The default settings are for a 11x7 Chess Board that was created using the online generator at https://calib.io and which you can get from http://jevois.org/data/calib.io_checker_260x200_7x11_23.pdf - When you print the board, make sure you print at 100% scale. You should confirm that the checks in the printout are 23mm x 23mm. An alternate chess board with fewer checks may be desirable at low resolutions, such as the 7x5 chess board at http://jevois.org/data/calib.io_checker_260x200_5x7_36.pdf - if you use it, set board size to '7 5', and square size to '36' to match it. If you are using a wide-angle fish-eye lens with a lot of distortion, turn on the You can also use a ChArUco board, though we have actually obtained worse reprojection errors with these boards. You can print the board at http://jevois.org/data/calib.io_charuco_260x200_5x7_36_27_DICT_4X4.pdf at 100% scale, and you should confirm that the checks in the printout are 36mm x 36mm, and the ArUco patterns within the white checks are 27mm x 27mm. If you use it, you need to set the board type, size, marker size, and square size parameters to match it. An alternate board with more ChArUcos is at http://jevois.org/data/calib.io_charuco_260x200_7x11_23_17_DICT_4X4.pdf | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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