| 摘要 |
PROBLEM TO BE SOLVED: To provide a device capable of accurately copying a document recorded on a white board, with less components and cost. SOLUTION: There are provided a convex mirror 2 capable of reflecting the entire surface of a white board 1, a CCD device 3 for taking in a curved image reflected on the convex mirror 2, a computer device 4 which converts the curved image taken in the CCD device 3 into a flat image, and a printer 5 which outputs the flat image having been converted by the computer device 4. The computer device 4 incorporates a conversion process program which converts a curved image into a flat image. The conversion process program calculates projection points of sampling points of the curved image reflected on the convex mirror 2 onto a flat plane by geometry operation. Thus, the curved image is converted into a flat image without using an orthogonal transformation algorithm. |
