| 摘要 |
PROBLEM TO BE SOLVED: To correctly express even the position of a small line and a small flat area between characters, etc., as a feature quantity. SOLUTION: A feature quantity extraction unit 105 comprises an expansion unit 201 which is connected to an input image data buffer 104, and reads data from the input image data buffer 104 and outputs the expanded image data, an expanded image data buffer 202 which is connected to the expansion unit 201 and stores the expanded image data output from the expansion unit 201, and a feature quantity operation unit 203 which is connected to the expanded image data buffer 202, and reads the expanded image from the expanded image data buffer 202, and outputs the feature quantity data.
|
