Method of extracting a region of a specific configuration and de

Details Method of extracting a region of a specific configuration and de Method of extracting a region of a specific configuration and de

1998-05-01

1999-07-27

Johns, Andrew W.

Image analysis

Image segmentation

382199, G06K 936

Patent

active

059303913

ABSTRACT:
A method of extracting an outer edge in an image comprises setting at least one or more search conditions to search for edges and searching for an initial starting as a reference point. From this reference point, it is determined whether one of the search conditions are satisfied within a particular range from the reference point. When the search condition is satisfied, the portion that satisfied the search condition is set as a next reference point. The reference points are connected in the order in which they were set as reference points to extract the outer edge. The search conditions may be set in a hierarchical order so that if one condition is not met, a different search condition may be used in the search for a subsequent reference point. The search conditions may comprise density or luminance characteristics, and may be further particularized to correspond to characteristics to extract the outer edge of a human face. As a further feature, the area corresponding to the extracted outer edge region is subject to appropriate processing depending on the characteristics of the extracted region.

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