| 摘要 |
PURPOSE:To accurately learn the features of the line width, etc., by using a feature extracting operator window in accordance with the line direction/width of a two-dimensional pattern and applying the AND and OR operations to the binary value of images of each picture element. CONSTITUTION:An operator operation part 11 contains a feature extracting operator window store part 10 which includes a feature extracting operator window having the length larger than the number of width picture elements by >=2 picture elements in the direction orthogonal to the line of a two-dimensional pattern and at least the length equal to 2 picture elements in the same direction as the pattern line respectively. Then the part 11 works so as to store the binary image of the two-dimensional pattern in an entire area of the operator window. The data on the binary image are inputted to an AND arithmetic part 12 and an OR arithmetic part 13. Then the minimum line width and the maximum line width are obtained via an AND and an OR applied to the numerical value of the binary image respectively. As a result, the features of the line width, etc., are accurately learnt. |
