Appendix C. Calibration Patterns
Calibration Patterns Used by OpenCV
There are many different kinds of calibration patterns. Each pattern or marker could be used in a calibration procedure or just to find the 3D pose of that marker. Figures C-1 through C-7 show seven different patterns or markers.
Figure C-1. Chessboard pattern (9 × 6 corners) for camera calibration or pose. This pattern can be used with the standard calibration technique described in Chapter 18, or in the camera calibration tutorial available online at opencv.org
Figure C-2. Circular features calibration or pose pattern. For this we can use the standard calibration technique described in this book or in tutorial_camera_calibration.html online using the findCirclesGrid() function
Figure C-3. Random pattern for calibration or pose. You can find an example of how to use this pattern by following the code in .../opencv_contrib/modules/ccalib/samples/random_pattern_calibration.cpp
Figure C-4. ArUco board for calibration or pose. See the “Calibration with ArUco and ChArUco” tutorial online at opencv.org for how to ...
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