US PATENT SUBCLASS 382 / 195
.~.~ Local or regional features

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

181  DF  PATTERN RECOGNITION {8}
190  DF  .~ Feature extraction {5}
195.~.~ Local or regional features {7}
196  DF  .~.~.~> Slice codes
197  DF  .~.~.~> Directional codes and vectors (e.g., Freeman chains, compasslike codes) {1}
199  DF  .~.~.~> Pattern boundary and edge measurements {1}
201  DF  .~.~.~> Point features (e.g., spatial coordinate descriptors)
202  DF  .~.~.~> Linear stroke analysis (e.g., limited to straight lines)
203  DF  .~.~.~> Shape and form analysis {1}
205  DF  .~.~.~> Local neighborhood operations (e.g., 3x3 kernel, window, or matrix operator)

DEFINITION

Classification: 382/195

Local or regional features:

(under subclass 190) Subject matter which includes analyzing the content of partial areas and elementary regions of a

pattern* to produce what are, in essence, simpler subpattern*s or component parts of the original pattern*.