i-cubed Landsat7 now available

[bull]

If you open World Winds layer manager and navigate to Images->NASA Landsat Imagery, you will see a new layer named I-Cubed (http://www.i3.com/) ESAT World Landsat7 Mosaic, tick it and enjoy.

An Isilon cluster was used by i3 to optimally process the raw Landsat7 data using sophisticated i3 color-balancing algorithms. Isilon systems donated to NASA were again used to rapidly build the i3 donated color-balanced imagery into World Wind's tiling scheme. Much thanks goes to i3 and Isilon for their generosity of donating this imagery into the public domain.

[withak]

Be forewarned: the server is pretty slow. :)

[Efrain]

I've have found a pair of holes in the layer at level5 (exactly over my home in Barcelona, very annoying...) worldwind://goto/world=Earth&lat=41.45505&lon=1.99781&alt=13319
I suppose it's due to processing errors, should we report i3 about it?

[TomServo]

No, i3 just processed the data. If their is a "hole" it is a server hickup. Try refreshing your cache for that area. If it still comes up, post in the forum.

[Efrain]

I have already tried refreshing the cache, but the trouble is inside the tile, half of it has an image while the other half is a black strip. This is why I thought of a processing error.

[TomServo]

post the WW url, will have to check into it then.

[Efrain]

It's worldwind://goto/world=Earth&lat=41.45505&lon=1.99781&alt =10

It appears at 10 km altitude

One of the bad tiles is numbered 1870_2588 (level 5)

[withak]

NASA's server is still having growing pains, particularly with levels 4 and 5.

[Efrain]

Another comment about the new layer: in general colors look much better than in the oneearth15m layer (at least more realistic to me), but I have noticed that in mountainous areas the ice is painted in pink/violet, similar to the geocover layers. Maybe it has been done this way in purpose... or?

[withak]

OnEarth has a pseudo-color layer (one with lots of pink because it includes infrared information also) and a visible color (one made to use only visible colors so it theoretically looks as realistic as possible).

For the OnEarth pseudo-color layer, exposed earth/rock is mostly pink, vegetation is mostly green, water is dark blue, and ice/snow is white. The various pseudo-color layers in WW are very handy for spotting water because water looks blue in those layers no matter what color it really is (brown, tan, green, etc.).

[adamhill]

And some comparion bewteen WW Landsat, i3 Landsat and GE

http://pneumatictu.be/i3comparison2.png

[Efrain]

The problem of the "wrong" tiles has disappeared, at least in a different computer it works fine.

I'm suspecting something from my computer was corrupting the images...

[bull]

The NASA guys are regularly deleting any black tiles from the server when they are found, so it's probably not your computer ;)

[Jan]

Hi

The coloring and sharpness of this new mosaic is eye candy. But unfortunateley it has, like NLT Landsat, some misalignment in western germany. At worldwind://goto/world=Earth&lat=52.21941&lon=7.70204&alt=41974&dir=0.3 you can see double images. The tiles between 52° and 51° north and 7° and 8° east seem to be shifted ~5km to the south. You can spot those misalignments when you switch between the i-cubed mosaic and onearth pseude color mosaic (which is perfectly aligned).

[pangloss]

I get some scrambled tiles. For example: worldwind://goto/world=Earth&lat=-22.74239&lon=117.45132&alt=77122

I refreshed several times and it downloaded the same.

[bull]

moe black tiles
http://www.theowl.pwp.blueyonder.co.uk/blacktiles.jpg

[withak]

I got black tiles from NLT Landsat Pseudo also, so maybe there are server problems.

[bull]

could be, I'll poke ddh tomorrow if he is online.

[withak]

Also the funky SRTM tiles. :)

http://pneumatictu.be/triangletopography.png

[IGEphil]

Hello
As it has been said, i-cubed imagery is "eye-candy".

I regret some artifacts that make is usable from further from earth than NLT imagery

i-cubed : http://img156.imageshack.us/img156/3874/icubeti3.th.jpg (http://img156.imageshack.us/my.php?image=icubeti3.jpg)
NLT
http://img180.imageshack.us/img180/2505/nltgw2.th.jpg (http://img180.imageshack.us/my.php?image=nltgw2.jpg)
OnEarth
http://img180.imageshack.us/img180/2152/onearthnu3.th.jpg (http://img180.imageshack.us/my.php?image=onearthnu3.jpg)

Anyhow, it's a great job!!!!