| 摘要 |
PURPOSE:To correct a picture distortion well even when a form other than a specified format is used by performing a distortion correction by means of calculating a distortion quantity at the time of the input of a drawing on the basis of the predetermined condition of a rid spacing and the condition of a grid number. CONSTITUTION:A multiple storage circuit 26 stores the basic number of the grid number, which is optionally set, and a grid spacing storage circuit 28 stores the grid spacing, which is set in the form set in a scanner, and a distortion calculation circuit 24 calculates the respective quantities of and inclination distortion and a parallel movement distortion of the drawing, on the basis of the coordinate of a grid position detection mark M, which is detected from an input data by a mark detection circuit 20 and is positioned at the respective vertex of a rectangle, complemented by a mark complement circuit 22 as occasion demands, and on the basis of the respective stored values of the multiple storage circuit 26 and the grid spacing storage circuit 28. A distortion modification circuit 30 modifies the coordinate of an object picture in the drawing inputted from an information transformation circuit, on the basis of the inputted quantity of the parallel movement distortion. |
