| 摘要 |
PURPOSE:To extract the stable feature value by obtaining the density value for each of vertical and horizontal components based on a size ratio between a subject pattern and a standard pattern. CONSTITUTION:When the vertical and horizontal component values of a pattern are normalized, the density of each component is corrected in response to the vertical and horizontal reduction rates. IN other words, the vertical component is multiplied by a (y) directional reduction rate y/Y, e.g., 8/24=1/3 is satisfied. In the same way, the vertical component is multiplied by an (x) directional reduction rate x/X. Thus two normalized pictures having the maximum density value '6' are obtained. In such a way, the stable feature value is obtained with no difference of density caused between the vertical and horizontal components even with deformed characters. |
