US PATENT SUBCLASS 382 / 201
.~.~.~ Point features (e.g., spatial coordinate descriptors)


Current as of: June, 1999
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382 /   HD   IMAGE ANALYSIS

181  DF  PATTERN RECOGNITION {8}
190  DF  .~ Feature extraction {5}
195  DF  .~.~ Local or regional features {7}
201.~.~.~ Point features (e.g., spatial coordinate descriptors)


DEFINITION

Classification: 382/201

Point features (e.g., spatial coordinate descriptors):

(under subclass 195) Subject matter including any of the following: an image is sampled at only a few key locations to determine whether essential points in a pattern* are present at those locations; every measurement on the image results in a set of values representing spatial coordinates only; or each of the features sought within a pattern* can be defined by a specific point.

(1) Note. Examples of such features are scan intercepts, line endings, and the intersection of lines.