Combined chaincode for recognizing the hand written number

摘要

The present invention relates to recognition of hand-written numerals based on hand movements. The purpose of the present invention is to solve a problem that since a general chain code is sensitive to directivity, the general chain code may reduce a recognition rate during recognition of hand-written numerals based on hand movements and may decrease recognition speed by using a complex algorithm to solve this. To solve the problem, the present invention provides a method for creating a new multiple combination type chain code in which multiple neighbor chain codes are combined with a conventional single directivity chain code. The method uses a manner of creating new multiple combination type chain code indexes, in which multiple unidirectional chain codes are combined with cursive linear components based on hand movements, in order to prevent an error generated by a general chain code which is sensitive to directivity. The method also uses a linear component sampling technique by cursive script based on hand movements, and a manner of checking chain codes in a certain section of the linear components and setting multiple indexes. The multiple combination type chain code is used to recognize numeric representation or handwritten numerals on space based on hand movements to reduce the number of errors induced by local characteristics of the numeric representation and reduce computational complexity by the linear component sampling technique, thereby improving the recognition speed. The multiple combination type chain code is expected to be widely utilized even in various household appliances including a TV remote or the like, and is used to recognize characters or gestures, thereby being applied to the production of various human interfaces.