| 摘要 |
PURPOSE:To perform precise collation by retrieving a registration ledger automatically by files and by performing video display while overlapping the retrieved registration picture with an objective picture. CONSTITUTION:A picture on a retrieved microfilm is converted into a video signal through a TV camera 3, and a picture of an object 4 is also converted into a video signal through a TV camera 5. Then, the video signal from the TV camera 3 is in- putted to the R channel of a color display device 7, and that from the TV camera 5 to the G channel. A part where two pictures overlap each other turns yellow (Y), and the other part turns red and green, so that collation is facilitated. |
