Cross-product filter

Cross-product filter

Method and apparatus for filtering a sequence of digital values representative of endpoints of vectors which represent the stroke of a writing instrument on a writing tablet. The cross-product and dot-product of the vectors comprising the stroke are computed to produce a sample of points which are c...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: LIPSCOMB, JAMES S
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
HANDLING RECORD CARRIERS
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Beschreibung
Zusammenfassung:Method and apparatus for filtering a sequence of digital values representative of endpoints of vectors which represent the stroke of a writing instrument on a writing tablet. The cross-product and dot-product of the vectors comprising the stroke are computed to produce a sample of points which are close together where the stroke curves sharply, and which are farther apart where the stroke is substantially straight.