Patent classifications
G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06V
IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
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30/00
Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
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G06V30/18
Extraction of features or characteristics of the image
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G06V30/1801
Detecting partial patterns, e.g. edges or contours, or configurations, e.g. loops, corners, strokes or intersections
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G06V30/18067
by mapping characteristic values of the pattern into a parameter space, e.g. Hough transformation
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