Title:
PATTERN-TO-PATTERN DISTANCE CALCULATOR
Document Type and Number:
Japanese Patent JPS58115490
Kind Code:
A
Abstract:
Apparatus for calculating the distance between two patterns, each given in the form of time sequences of vectors, by using the distance between a feature vector of one pattern and a line segment connecting two feature vectors of the other pattern. The apparatus calculates the distance D representing the length of the line segment between two adjacent vectors ai+l and ai of a first time sequence of vectors, A. It also calculates the distance X and Y representing, respectively, the distance between the vector ai+l and a vector bj, and the distance between the vectors ai and bj, where the vector bj is a vector of the second time sequence of vectors, B. Processing units generate a distance signal Z representing the perpendicular distance from the vector bj to the line segment connecting adjacent vectors ai+l and ai. Comparing the absolute value of the difference between the distance X and Y to the length of the line segment D determines a selection signal which selects one of the distances X, Y or Z as the most correct distance between the two patterns.
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Inventors:
WATANABE TAKAO
Application Number:
JP21020081A
Publication Date:
July 09, 1983
Filing Date:
December 29, 1981
Export Citation:
Assignee:
NIPPON ELECTRIC CO
International Classes:
G06T7/60; G10L15/12; (IPC1-7): G06F15/20; G10L1/00
Domestic Patent References:
| JPH022159A | ||||
| JPS6428959A | 1989-01-31 | |||
| JPS6428960A | 1989-01-31 | |||
| JPH022160A | 1990-01-08 |
Attorney, Agent or Firm:
Shin Uchihara