OPERATING DEVICE, IMAGE DISPLAY SYSTEM, MAP DISPLAY CONTROL DEVICE, AND PROGRAM FOR MAP DISPLAY CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To determine a visual point position and a visual line direction based on one operation by a user in displaying an image of a picture in a visible form when looking down in a certain visual point position and visual line direction.

SOLUTION: An image display system comprises an operating device for outputting a first signal based on the one operation and a second signal based on the one operation by receiving the one operation by the user; a specifying device for specifying the visual point position and the visual line direction when looking down the picture based on the first signal and second signal output by the operating device; and an image display device for displaying the image of the picture in the visible form when looking down the picture in the visual point position and visual line direction specified by a drawing control device.

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