System for modifying classification scheme for handwritten characters
First Claim
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1. A system for modifying a classification scheme for classifying hand-written characters, said system comprising:
- a memory storing the classification scheme so as to include a plurality of classes and user dependent weighted allographs, each class representing a respective letter and containing one or more of the allographs, each allograph including an associated weighting and representing a respective style of a respective letter and containing one or more prototypes, each prototype representing a variation in the respective allograph and being represented as a prototype vector, each prototype vector being formed from a number of values, each value quantifying a respective feature of the respective prototype vector; and
a processor configured for;
receiving data representing at least one handwritten character;
determining a selection value based on the similarity of the received character and a respective prototype vector of the stored classification scheme;
selecting a respective one of the prototype vectors of the stored classification scheme in accordance with the determined selection value;
selecting a class of the stored classification scheme in accordance with the selected prototype representing the character to thereby determine the letter represented by the character;
selecting one of the stored user dependent weighted allographs in accordance with the weightings and in accordance with said selected prototype vector representing the character;
modifying one or more of the allographs in the respective class in accordance with the selection by modifying the weighting of said one or more of the allographs; and
storing a modified classification scheme which includes said modified allographs.
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Abstract
A system for modifying a classification scheme for classifying hand-written characters. A memory stores the classification scheme, which includes a number of allographs, each allograph representing a respective style of a respective letter. A processor received data representing a hand-written character, and then selects an allograph representing the character. One or more of the allographs are then modified in accordance with the selection, to thereby reflect the fact that the allograph corresponds to a style of letter used by a user.
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Citations
11 Claims
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1. A system for modifying a classification scheme for classifying hand-written characters, said system comprising:
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a memory storing the classification scheme so as to include a plurality of classes and user dependent weighted allographs, each class representing a respective letter and containing one or more of the allographs, each allograph including an associated weighting and representing a respective style of a respective letter and containing one or more prototypes, each prototype representing a variation in the respective allograph and being represented as a prototype vector, each prototype vector being formed from a number of values, each value quantifying a respective feature of the respective prototype vector; and a processor configured for; receiving data representing at least one handwritten character; determining a selection value based on the similarity of the received character and a respective prototype vector of the stored classification scheme; selecting a respective one of the prototype vectors of the stored classification scheme in accordance with the determined selection value; selecting a class of the stored classification scheme in accordance with the selected prototype representing the character to thereby determine the letter represented by the character; selecting one of the stored user dependent weighted allographs in accordance with the weightings and in accordance with said selected prototype vector representing the character; modifying one or more of the allographs in the respective class in accordance with the selection by modifying the weighting of said one or more of the allographs; and storing a modified classification scheme which includes said modified allographs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification