RECOGNITION DEVICE FOR OBJECT CHARACTER STRING WHOSE CHARACTER ARRAY IS ALREADY KNOWN

摘要

PURPOSE: To correctly segment characters even in the case of dirt, a blur, misbinarization, etc., by scanning an extraction window corresponding to the character array which is already known and determining a character segmentation position. ;CONSTITUTION: Binary image data have a blur 20 and a noise 21 resulting from input conditions and a failure in binarization. The extraction window 22 is scanned for the binary image data and feature quantities are extracted by scanning points 25. The extraction window 22 has size and arrangement corresponding to the character array which is already known; and hatched parts 23 correspond to character areas and their peripheral blank part 24 corresponds to a background area. The feature quantities are represented as the result obtained by subtracting the number of all black pixels in the background area 24 from the number of all black pixels in the character areas 23. The position 26 of the extracted window 22 a where the feature quantity is minimum is regarded as the character segmentation position. Then characters in the character areas 23 in the extracted window 22 at the position 26 are segmented.;COPYRIGHT: (C)1995,JPO