DIFF Subgroup
G06V 30/10 Character recognition
Introduced: January 2022
Full Title
Full titles differ between systems:
IPC:
Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition > Character recognition
CPC:
Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition (scanning, transmission or reproduction of documents or the like H04N1/00) > Character recognition
IPC and CPC are identically structured here. All 13 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2022.
Child Classifications
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- G06V 30/12 Detection or correction of errors, e.g. by rescanning the pattern since 2022 +2 CPC IPC+CPC Available in IPC and CPC
- G06V 30/18 Extraction of features or characteristics of the image since 2022 +9 CPC IPC+CPC Available in IPC and CPC
- G06V 30/199 Arrangements for recognition using optical reference masks, e.g. holographic masks since 2022 IPC+CPC Available in IPC and CPC
- G06V 30/20 Combination of acquisition, preprocessing or recognition functions since 2022 IPC+CPC Available in IPC and CPC
- G06V 30/24 characterised by the processing or recognition method (segmentation of character regions G06V30/148) since 2022 +1 CPC IPC+CPC Available in IPC and CPC
- G06V 30/26 Techniques for post-processing, e.g. correcting the recognition result since 2022 IPC+CPC Available in IPC and CPC
- G06V 30/28 specially adapted to the type of the alphabet, e.g. Latin alphabet since 2022 +2 CPC IPC+CPC Available in IPC and CPC