| 摘要 |
PURPOSE:To obtain a CAD system excellent in the operability by applying part of distortion correction to a graphic data after CAB input and treating a run length vector form image data displayed on a graphic display device and the graphic data simultaneously. CONSTITUTION:Corrections of parallel movement, expansion/reduction and X direction shear distortion are applied to an image data extracted from a data file and the result is displayed on a graphic display device. Then the displayed image data is used as a background and a graphic data is inputted by the CAD. The inputted graphic data has a rotation distortion remained, then the distortion of the image data is eliminated completely by applying the correction of rotation distortion after the input of graphic data and ther esult is stored in the graphic data file. Thus, the distortion of the run length vector form image data is corrected without changing the shape of the graph inputted by the CAD. |
