Most rendering programs (including mine) use "tile pyramids" or sets of image tiles sampled at different levels of detail. This technique allows you to retain high resolution close up with less detail in the background. Altering the appearance of the texture map becomes a nightmare, however, with thousands of tiles at different resolutions. Consequently, I've tried to build some control into the rendering program so that the appearance can be changed at run time.
The image above shows a view of Longs Peak (left) and Mount Meeker (right) using NAIP imagery acquired in the summer season. By adjusting multipliers on the color bands along with the color of the incident "sun" light, I produced this corresponding "winter" scene:
It's not perfect, but it's still pretty compelling.
Wednesday, August 11. 2010
Change Parameters - Change Seasons
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