| 摘要 |
PURPOSE:To eliminate the need for preparing in advance a special mask pattern by utilizing an image which has been photographed by a camera device, as a mask pattern, superposing an image whose angle has been changed, on this mask pattern and inspecting a difference of both of them. CONSTITUTION:An image 1a of an annular fluorescent lamp 1, which has been photographed by a camera device 3 is fed into an image processor 5. In the image processor 5, the image 1a of the fluorescent lamp 1, which has been fed in from said camera device 3 is inputted and stored in a storage part 6. Subsequently, in a comparing part 8, an image 1b which has been brought to turning processing by a prescribed angle by an image turning part 7, and the image 1a which is stored in said storage part 6 and not turned are superposed and compared. In such a way, it becomes unnecessary to prepare in advance a special mask pattern. |
