G - Physics – 09 – B
Patent
G - Physics
09
B
354/1
G09B 9/30 (2006.01) G06T 15/20 (2006.01)
Patent
CA 1276297
ABSTRACT OF THE DISCLOSURE Imagery data of a scene in the form of data for pixels of a display screen is provided, by the use of a voxel data base. A host simulation system provides data as to the viewer's eye position relative to the display screen, which determines the simulated field of view (FOV) and the voxel data base is organized into a two dimensional grid, for each of a plurality of resolution level representing ground coordinate positions. The display screen comprises rows and columns of pixels and a plane projected through the eyepoint and a given pixel column intercepts the data base grid in a line which defines a given linear scanning path. In accordance with the invention the voxel data base is effectively scanned along the linear path at a data base resolution proportional to the projected pixel size on the data base and the scanned voxel data is processed into data for successive pixels, the respective boundaries of which are projected onto the data base surface encountered in the linear scan of the data base. Compensation for effects such as elevation (vertical) perspective and roll are performed following the computation of the pixel data.
546570
Ellis Thomas O.
Rosman Andrew
Yang Chao K.
Ellis Thomas O.
Hughes Aircraft Company
Rosman Andrew
Sim & Mcburney
Yang Chao K.
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