| 摘要 |
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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