Patent ID: 6032167
Filing Date: 2000-02-29
Classification: G06T

Abstract:
A data processing circuit adapted for use in pattern matching between two multi-dimensional signal data, comprising:a unit for generating data calculated by multiplying first multi-dimensional signal data by a given window function;a square arithmetic unit for calculating square of second multi-dimensional signal data;first, second, third, and fourth integral transform units for integrating the first multi-dimensional signal data multiplied by the window function, the second multi-dimensional signal data, the output of said square arithmetic unit, and the window function;a first computation unit for calculating correlation between the first and second multi-dimensional signal data items on the basis of the outputs of said first and second integral transform units;a second computation unit for calculating a means of deviations from the square of the multi-dimensional signal data on the basis of the outputs of said third and fourth integral transform units; anda third computation unit for obtaining a portion of the second multi-dimensional signal data most consistent with the first multi-dimensional signal data multiplied by the window function based on the outputs of said first and second computation units.