In this post, I discussed using attenuation to help highlight ridgelines, particularly those that run nearly parallel to the viewing direction. While this is generally an effective technique, there are occasions where you get some undesirable results.
Take, for instance, this (no attenuation) image with Keystone ski area in the foreground and the Tenmile Range in the background (click for high res version).
I really like the crispness of the background mountains, but the ridgelines to the right (West) of the ski area don't "pop" as well as I'd like.
So, let's try distance-based attenuation (click for high res version):
There's better ridgeline definition, but the background peaks get washed out by the attenuation.
So, what if we "cleared the air" at higher elevations, still keeping the distance-based attenuation? I then got this result (click for high res version):
I still get good ridgeline definition, but much greater clarity in the high peaks!
Friday, September 2. 2011
More Ridgeline Stuff
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Valley Haze, Part II
In this post, I introduced a hybrid attenuation model that combines contributions to attenuation from distance and elevation. For simplicity, if we "clear the air" at higher elevations, we can simulate the crisp high country views while adding haze in va
In this post, I introduced a hybrid attenuation model that combines contributions to attenuation from distance and elevation. For simplicity, if we "clear the air" at higher elevations, we can simulate the crisp high country views while adding haze in va
Weblog: CTM image gallery
Tracked: Sep 12, 09:39
Tracked: Sep 12, 09:39
Telluride
When it comes to rugged mountain beauty, few places in America can compare with Telluride, Colorado. It's located along the All-American San Juan Skyway (see, for example, this link.) Here's my shot at a computer rendering showing the Town and the sur
When it comes to rugged mountain beauty, few places in America can compare with Telluride, Colorado. It's located along the All-American San Juan Skyway (see, for example, this link.) Here's my shot at a computer rendering showing the Town and the sur
Weblog: CTM image gallery
Tracked: Oct 15, 15:07
Tracked: Oct 15, 15:07
Seems there are two parts to the answer. Given a smoke model (some smoke "field" where attenuation w = f(x,y,z)) the program would render a (fairly) realistic image of the resulting scene.
I could come up with some simplistic model based on factors like fire location, prevailing winds, etc - but I'm no expert in this area. So, while it might look OK, it wouldn't be a valid smoke propagation model.
Cheers!