| 摘要 |
<p>An image display device includes a display unit, a graph display control unit, a display range displacement unit, a plotted point change unit and a graph update control unit. The graph display control unit displays an approximate graph for plotted points on an image display region to which a coordinate system is set. The display range displacement unit displaces a display range of the coordinate system with an image in the image display region fixed. Responding to the display range being displaced, the plotted point change unit changes coordinate values of the plotted points in accordance with displacements of the display range to maintain positions of the plotted points before and after the display range being displaced, and updates display of the plotted points, and the graph update control unit updates a content displayed by the graph display control unit.</p> |
