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Priority to JP57163454ApriorityCriticalpatent/JPS5953976A/ja
Publication of JPS5953976ApublicationCriticalpatent/JPS5953976A/ja
Publication of JPH0410112B2publicationCriticalpatent/JPH0410112B2/ja
G06V10/00—Arrangements for image or video recognition or understanding
G06V10/20—Image preprocessing
G06V10/22—Image preprocessing by selection of a specific region containing or referencing a pattern; Locating or processing of specific regions to guide the detection or recognition