Context-preserving display system using a perspective sheet

Details Context-preserving display system using a perspective sheet Context-preserving display system using a perspective sheet

1996-01-22

1997-11-18

Herndon, Heather R.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

345433, G06T 1500

Patent

active

056892870

ABSTRACT:
A substitute image is generated by dividing a full image into panels defined by a center (or focus) panel, for use in applications where the full image is not entirely displayable on a given display device at a necessary resolution. The full image is bounded by a bounding rectangle, the focus panel is a rectangle with sides parallel to the sides of the bounding rectangle, and the focus panel defines eight other panels, four side panels and four corner panels. The substitute image is the focus panel, with the side panels folded into a smaller cross section, but remaining continuous with the focus panel, and the corner panels folded and sheared to remain continuous with the side panels in a three-dimensional ("3D") space in which a viewpoint and a view plane representing the display surface is also located. To focus on an area of the image which is not under the focus panel, the viewer selects a point in the area of interest, and the display system moves the image so that the selected point is under the focus panel.

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