Recording medium handwritten character recognition method, handwriting recognition system, and handwriting recognition program

摘要

It is possible to perform character recognition performance and easy even for input that was written stroke such as regular script when performing handwriting recognition and online handwriting recognition, and also addresses the conversion of such significant rotational deformation and . And captured by the parameter representation in each fraction for each handwriting entered performs piecewise linear approximation to each image in each, as a vector reaching the end point from the starting point, the present invention includes a reference, each broken line, which is piecewise linear approximation that for this The winding the sum of the external angles of the same sign, which is obtained as a line angle series angle formed between each polygonal line with the axis that is, to obtain the external angle series of corner vertices of the polygonal line obtained, the same plus or minus sign of the exterior angle series is continuous The the angle sequence, features and global by its respective sequence obtained, extracted sharing manner and hierarchical, local features in the curved portion which are divided according to the series winding angle, the quasi-local features, the In comparing the extraction results, with the template site of the recognition target character which is prepared in advance, I have to perform the character recognition.