Patent ID: 8687068

Claim:
A method comprising: generating, by a processor, a camera lens geometrical calibration pattern to reduce lens distortion thereof using geometric information encoded in the pattern, the pattern comprising: a plurality of color patches organized over a spatial configuration having a plurality of columns and a plurality of rows, each color patch selected as one of a plurality of different basis colors lesser in number than a number of the color patches, the color patches including a plurality of corner color patches appear at corners of the spatial configuration; a plurality of color codes, each color code defined as a contiguous number of the color patches in a particular spatial configuration, each color code having a same number of the color patches, each different basis color appearing once in each color code, the color codes overlapping one another spatially with respect to the color patches, wherein each color patch except the corner color patches appears in more than one of the color codes, and the particular spatial configuration of the contiguous number of the color patches of each color code is unique as compared to the particular spatial configuration of the contiguous number of the color patches of any other of the color patches; and outputting the pattern, by the processor.