Pattern features extracting apparatus and method
First Claim
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1. A pattern features extracting apparatus comprising:
- a plurality of mask memories for storing a plurality of different mask pattern data whose values are obtained from Hermite'"'"'s polynomials weighted by a Gaussian function;
an input pattern memory for storing unknown input pattern data;
means for accessing data in a predetermined area of said input pattern memory including a given position of the unknown input pattern; and
means for convolving the data accessed corresponding to the unknown input pattern data using the plurality of different mask pattern data in said plurality of mask memories.
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Abstract
A plurality of different mask pattern data which are indicated by values obtained from Hermitte'"'"'s polynomials of different degrees weighted by a Gaussian function are stored in mask memories, respectively. Each mask pattern data stored in each of the mask memories is convolved by a sum-of-product circuit together with unknown input pattern data. A plurality of extracted pattern feature data are stored in pattern feature memories.
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11 Claims
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1. A pattern features extracting apparatus comprising:
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a plurality of mask memories for storing a plurality of different mask pattern data whose values are obtained from Hermite'"'"'s polynomials weighted by a Gaussian function; an input pattern memory for storing unknown input pattern data; means for accessing data in a predetermined area of said input pattern memory including a given position of the unknown input pattern; and means for convolving the data accessed corresponding to the unknown input pattern data using the plurality of different mask pattern data in said plurality of mask memories. - View Dependent Claims (2, 3, 4, 5)
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6. A Pattern recognition system comprising:
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a plurality of mask memories for storing a plurality of different mask pattern data whose values are obtained from Hermite'"'"'s polynomials weighted by a Gaussian function; an input means for inputting unknown input pattern data; means for convolving the mask pattern data and unknown input pattern data; means for storing output data from said convolving means in a matrix form; means for calculating a multiple similarity for each output data stored in said matrix storing means; and means for recognizing the unknown input pattern in accordance with the multiple similarity. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification