Two-dimensional object recognition using chain codes, histogram normalization and trellis algorithm
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United States of America Patent
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Nov 8, 1988
Grant Date -
N/A
app pub date -
Jun 2, 1986
filing date -
Jun 2, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system for classifying a two-dimensional object, the object having a boundary. The system includes a sensor for sensing the boundary of the object, a processor which assigns a chain code to the boundary of the object and memory for storing a plurality of chain code histograms corresponding to known two-dimensional objects. A histogram is generated from the object's assigned chain code and correlated in the processor with a chain code histogram from memory. A final ambiguity between the normalized chain code of the object and the chain code of the correlating known object is resolved through application of a Viterbi algorithm.
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