| 摘要 |
PURPOSE:To facilitate an isothermal indication by indicating a marker line overlapping a temperature distribution image while a signal is generated according to the position at which the marker line and a gray scale cross. CONSTITUTION:A signal of an infrared ray detector 1 is memorized into an image memory 8. A reading selection circuit 10 extracts an image within a temperature range set with a setting circuit 9 to be stored into a display image memory 12. Data of the memory 12 is read out together with data of a marker line stored into a memory 13 and sent to a CRT display unit 11. A coincidence detector 30 compares data of a gray scale memory 18 and data of the memory 12 and sends a coincidence pulse to an addition circuit 14 when they coincides. The circuit 14 turns a brightness signal level to sent to the unit 11 to a white level to display it distinguished from points thereabout. |
