And apparatus for character pattern recognition processing method, and the recording medium and character pattern recognition processing program

摘要

PROBLEM TO BE SOLVED: To actualize high recognition performance for a character object having faintness, a stain, etc. ;SOLUTION: A deterioration decision part 1-3 count pixel connections of black to black, white to white, black to white, and white to black by scanning the whole character normalized by a preprocessing part 1-2, finds simplicity with the product of the numbers of pixel connections of black to black and white to white and complicity with the product of the numbers of pixel connections of black to white and white to black, and decides whether the character is faint or stained according to a distance value, etc., found with a deterioration decision feature standard dictionary 1-5. A deterioration correction part 1-6 uses the decision result to calculate a correction coefficient from the simplicity and complicity of a local area and corrects a feature vector using the black pixel connection length of the object character that a feature extraction part P4 extracts from a normalized character pattern by using the correction coefficient. A discrimination part 1-7 finds the distance value between the corrected feature vector and each category in a recognition feature standard dictionary 1-8 to discriminate the most similar character category as a recognition result.;COPYRIGHT: (C)2003,JPO