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Device for extracting a density as one of pattern features for each feature point of a streaked pattern
Device for extracting a density as one of pattern features for each feature point of a streaked pattern
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机译:用于为条纹图案的每个特征点提取密度作为图案特征之一的设备
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摘要
In addition to positions and directions of feature points of a streaked pattern, such as minutiae of a fingerprint on a background, a plurality of novel counts and a density are automatically extracted for each feature point selected as a reference feature point. The density is determined in connection with adjacent feature points that are present in a predetermined neighborhood of the reference feature point. Each count is decided by the number of streaks or ridges intervening between the reference feature point and a related feature point that is nearest to the reference feature point among the feature points in a predetermined sector of the neighborhood.
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