| 摘要 |
PROBLEM TO BE SOLVED: To quickly and accurately detect the difference between two images which are projected on a screen. SOLUTION: This device functions as a computer and is provided with an image information reading part 31 which reads two image information files 11 and 21, an image information comparison/decision part 32 which compares the files 11 and 21 with each other and decides the coincidence or non- coincidence of both files and an image difference display part 33 which superimposes the files 11 and 21 on each other and switches alternately both files to display them at the time of being decided as the non-coincidence. |
