A method of recognition of hand drawn line patterns
T. W. Sze, M. J. Zobrak · NASA Technical Reports Server (NASA) · 1967
A method utilizing the direction of pen motion during sequential increments of time is presented as a means of recognizing hand drawn line patterns.drawn, d+l discrete points are measured.From these, d quantized directions are obtained and used as parameters in a discriminant function.The coefficients, or weights, of the function are determined through a learning algorithm.Experiments were performed using ten different sets of children's writing.The complete English Alphabet, in capikal letters, and the numerals comprised each set.These patterns had various degrees of distortion, rotation, and continuity.all ten sets were used, the error during recognition was 6 .6 . During the time a pattern isAfter a training phase in which