CPC Subgroup
G06V 30/16 Image preprocessing
Full Title
Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition (scanning, transmission or reproduction of documents or the like H04N1/00) > Character recognition > Image preprocessing
6 direct subcodes
Child Classifications
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- G06V 30/162 Quantising the image signal
- G06V 30/164 Noise filtering
- G06V 30/166 Normalisation of pattern dimensions
- G06V 30/168 Smoothing or thinning of the pattern; Skeletonisation