EP 0710384 A1 19960508 - METHOD OF STROKE SEGMENTATION FOR HANDWRITTEN INPUT
Title (en)
METHOD OF STROKE SEGMENTATION FOR HANDWRITTEN INPUT
Title (de)
VECTOR-SEGMENTIERUNGSVERFAHREN FÜR HANDGESCHRIEBENE EINGABEN
Title (fr)
PROCEDE DE SEGMENTATION DE TRAITS POUR ENTREE MANUSCRITE
Publication
Application
Priority
- US 9505409 W 19950503
- US 24040794 A 19940510
Abstract (en)
[origin: WO9532485A1] The method of the present invention includes a step of calculating the derivative (140), or instantaneous rate of change, of the curvature at points in the handwritten input (110). The method then selects as stroke boundary points certain points (or pixels) in the input which lie at a midpoint between a point of high curvature derivative and a succeeding point of low curvature derivative (150). Such boundary points are not influenced by absolute curvature values, but rather only by relative changes in the curvature. The stroke segmentation boundary points are provided to a stroke-based recognizer for interpretation of the handwritten input (170).
IPC 1-7
IPC 8 full level
G06K 9/22 (2006.01); G06K 9/34 (2006.01); G06K 9/62 (2006.01)
CPC (source: EP)
G06V 30/347 (2022.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9532485 A1 19951130; AU 2431695 A 19951218; BR 9506197 A 19960424; CA 2162489 A1 19980601; CN 1128074 A 19960731; CZ 6196 A3 19960612; EP 0710384 A1 19960508; EP 0710384 A4 19970502; FI 960110 A0 19960110; FI 960110 A 19960110; HU 9503882 D0 19960228; HU T75820 A 19970528; IL 113659 A0 19950831; JP 2002515144 A 20020521; MX 9600189 A 19981129; NO 955064 D0 19951214; NO 955064 L 19951214; PL 312469 A1 19960429; SK 3096 A3 19961002
DOCDB simple family (application)
US 9505409 W 19950503; AU 2431695 A 19950503; BR 9506197 A 19950503; CA 2162489 A 19950503; CN 95190347 A 19950503; CZ 6196 A 19950503; EP 95918350 A 19950503; FI 960110 A 19960110; HU 9503882 A 19950503; IL 11365995 A 19950508; JP 53030695 A 19950503; MX 9600189 A 19960110; NO 955064 A 19951214; PL 31246995 A 19950503; SK 3096 A 19950503