JPS5773481A - Optical character recognition device - Google Patents

Abstract

PURPOSE:To discriminate a character having an inclined variation of a character line such as a handwriting character from a standard character, and to extract it exactly, by handling various characteristic vectors as a vector of a multi-dimensional vector space, and comparing it with a characteristic vector of the standard character which is decided in advance. CONSTITUTION:An optical character image is converted to an electric information by a photoelectric converting circuit 1 under the control of a control part 4, a character part is quantized by a quanitizing circuit 2, and the electric information of 1 character portion is stored in the first page of a working memory 5 from a 1 character selecting circuit 3. Subsequently, a differental inclination code is generated by a differential inclination extracting circuit 6 under the control of the control part 4, is stored in the second page of the memory 5, also the number of times of intersection of horizontal and vertical scanning lines and a character is calculated by controlling an intersection frequency operating circuit 7, and is stored in other page of the memory 5. Subsequently, a multi-dimensional characteristic vector is outputted from a characteristic vector generating circuit 8 in accordance with contents of the memory 5, is compared with a characteristic vector of a standard character of a standard vector memory circuit 11, and a character code is extracted exactly by a character code selecting circuit 12.