Cross-product filter

Details Cross-product filter Cross-product filter

G - Physics

06

K

354/60

G06K 9/00 (2006.01) G06F 3/033 (2006.01) G06K 9/22 (2006.01)

Patent

CA 2022075

Method and apparatus for filtering a sequence of digital values representative of endpoints of vectors which represent the stroke of a writing instrument on a writing tablet. The cross-product and dot-product of the vectors comprising the stroke are computed to produce a sample of points which are close together where the stroke curves sharply, and which are farther apart where the stroke is substantially straight.

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