| 摘要 |
PROBLEM TO BE SOLVED: To provide a preview image corresponding to an attitude of a display section.SOLUTION: A first acquisition section 14A acquires light source information including a first relative position. A second acquisition section 14B acquires attitude information of the display section from a detection section. While using a first relative position, first attitude information as attitude information acquired the last time and second attitude information as attitude information acquired the present time, a calculation section 14D calculates a second relative position of a light source to the display section in an attitude identified from the second attitude information. A generation section 14E generates a document display surface for which a state where a document surface displaying document data is disposed in a virtual three-dimensional space and the light source is disposed at the second relative position to the document surface, is converted into a two-dimensional image viewed from a viewpoint position that is located on a normal of the document surface. A display control section 14F performs control for displaying a superposed image in which a background image of an observation environment in a real space and the document display surface are superposed, on the display section as a preview image. |
