December 2012
Intermediate to advanced
631 pages
13h 10m
English
Content preview from Graphics Gems III (IBM Version)
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VII.5
PROGRESSIVE IMAGE REFINEMENT VIA GRIDDED SAMPLING
Steve Hollasch, Kubota Pacific Computer, Inc., Santa Clara, California
Publisher Summary
The most common method employed to display a raster image is to sample the image data along scanlines usually from left to right and top to bottom. When the pixel-painting process is fast enough, the particular pixel ordering chosen is unimportant as far as the viewer is concerned. However, if the pixel sampling is slow or if the resolution is sufficiently high, the time to display the image can take minutes, hours, or days. This chapter discusses the display of images by sampling at progressively finer grids over the entire image area. The advantage over scanline sampling is that for the equivalent ...
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