Patent ID: 9188433
Filing Date: 2015-11-17
Classification: G01B,G06T,H04B

Abstract:
1. A method for generating codes for a code mask, comprising: arranging a plurality of symbols into an n1 by n2 symbol structure of a plurality of symbol structures, where n1 and n2 are integer values; defining a plurality of codewords from different overlapping k1 by k2 windows within the symbol structure, wherein co-linear and spatially overlapping windows define unique codewords, and the codewords are unique in a first direction of the symbol structure but are repeated in a second direction that is perpendicular to the first direction; and rendering the plurality of the symbol structures as a code mask, wherein symbols in two adjacent k1 by k2 windows are selected so as to avoid codeword aliasing of codewords in the two adjacent k1 by k2 windows.