Celestia Forums

Hello:

Now that Virtual Textures are available, I have been trying to collect all of the highest-resolution textures that I can find for Earth.

I have found 32K textures for the surface and night lights. I have a 16K virtual texture for specular, although I'm not sure it has rivers and lakes implemented. (This is discussed in the "case for 32K specular map" thread.) I have a 32K VT overlay texture for political boundaries, and Fridger's huge new locations file.

But the highest-res normal map I have found is 8K. This is making hash out of my beautiful 32K surface texture. Does anyone know of a higher-resolution normal map or bump map?

Thanks,

Tim Crews

Theres a 10k x 5k bump map available here
http://www.space-graphics.com/earthphoto.htm
but when you scale it down for Celestia it is still only 8k.
You need a good quality bump map to make a big normal map.I havent found any bigger than the one above,cheers Jestr

Hi Timcrews,

The 16k spec has rivers, check for example the Mississippi and the Amazon. Of course rivers only show up if they are wide enough to cover a pixel.

Buzz

Previously when I downloaded a fairly big specmap, it turned out to be kinda bad, with all areas below sea level being specularised (Caspian sea, holland etc). Before I start to download this one, i'd just like to be sure the same isn't true here again?!

(I don't remember whose specmap had the problem last time btw)

Jack

This one reflects where there is surface water, not on every spot below sea level. I would not like that, being from the low countries myself
By the way, the current version is rather small because it in png format.

Buzz, that's great! Thanks!

til somebody in the Celestia community gets ahold of these:

Global (on continents), cloudless, true color (using bands R:1, G:4, B:3)
coverage of the earth at 500m/pixel (twice that of Blue Marble). Updated,
with archives, every 32 days (so you could have seasonal coverage

Each of 5 'continents' is a 650 MB download (if you include all 3 bands, so
it would be 3.5 G or so for the full set.


http://glcfapp.umiacs.umd.edu:8080/esdi/index.jsp

Would require this tool to reproject from homolosine projection to simple cylindrical projection:

http://lpdaac2.usgs.gov/landdaac/tools/modis/index.asp

I'll leave these pointers to somewone with a faster connection and better scripting skills than myself.

Darryl Roy
(who seems to be logged in, finally)