PURPOSE: To obtain an image conversion device for a remote-control pilotless aircraft with a TV camera installed for the indication of an attitude on ground coordinates to ensure the easy remote control of the aircraft from the ground.

CONSTITUTION: A pilotless aircraft 1 has a TV camera 2 fixed to the airframe thereof and an attitude angle measurement device 4 to detect an airframe attitude angle. The transmission device 3 of the pilotless aircraft 1 sends a TV image and airframe attitude angle (pitching and rolling angles) to a ground control device 5 and such data is received by the receiving device 6 of the ground control device 5. The received image data is subjected to a coordinate transformation process through the image coordinate transformer 9 of an image conversion device 7, using the received air-frame attitude angle data. The processed data is displayed with ground fixed coordinates on a monitor TV 10.