Methods, apparatus, computer program and storage medium for position decoding
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United States of America Patent
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Mar 2, 2010
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app pub date -
Apr 29, 2004
filing date -
Apr 29, 2003
priority date (Note) -
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Abstract
A method, in an apparatus for position decoding, operates to extract a sequence of positions from a sequence of images of a position-coding pattern, as recorded by a sensor. The method, which may be embodied as a computer program on a computer-readable storage medium, involves the steps of retrieving at least one reference position (P1, P1'); and extracting the sequence of positions solely by matching information obtained from each of the images with a corresponding pattern reference area (MA), which represents a known subset of the position-coding pattern with a given, direct or indirect, spatial relation to the reference position(s).
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