Circle Grid Camera Calibration Patterns

You can download a PDF version of the circle grid calibration pattern that the SP1 uses for camera calibration. This pattern is compatible to the OpenCV asymmetric circle grid, and can thus also be used for other purposes.

When printing the pattern, please ensure that your PDF viewer or printer driver do not scale the document. Otherwise you will not be able to receive accurate metric measurements through stereo vision. You can verify that your printed pattern has the correct scaling, by measuring the reference line at the top of each document.

Circle grid pattern preview


The pattern is available in various sizes for different paper formats. Please select the desired size below: