Importing Geo-Tiffs into World Wind

[woodse2]

I am looking at importing geo-tiffs into worldwind (mainly old aerial photographs.) can anybody here pint me in the right direction to do this, as I have not been able to figure it out.

Thanks

[TomServo]

probably the easiest way is to use Global Mapper and process the tiffs into a WW cache.

[Chade]

dstile tile --lztsd 0.5 --wwcache --overviews <destination folder> <source file> ?

[nlneilson]

dstile tile --lztsd 0.5 --wwcache --overviews <destination folder> <source file> ?

That works, good qauality.
You may need to change the color format to RGB or the output may be greyscale.

With FWTools and dstile
pct2rgb inFile RGBfile
dstile.exe tile --lztsd 10.0 --wwcache --overviews RGBfile

I could not find a way to set the lztsd in Global Mapper.
It looks like the default is 90 degrees.

[Chade]

if he's got aerial imagery, there's not much point of having an lztsd of 10...

[nlneilson]

probably the easiest way is to use Global Mapper and process the tiffs into a WW cache.

I emailed Mike at Global Mapper and suggested an option be added to specify directly an lztsd and how that could be implemented. Just an "if" block and to check whether the input lztsd would divide into 180 degrees evenly.
180 % lztsd == 0

Apparently that will be added to Global Mapper's next version.

FWTools and dstile works fine and is free.

[nlneilson]

if he's got aerial imagery, there's not much point of having an lztsd of 10...

The lztsd of 10.0 was just what I chose for the FAA Sectionals that cover the 48 contiguous States. This was after trying about 10 others.

For aerial imagery the lztsd could be much smaller, just try several until you get the results you want.

For aerial imagery they would need to be geo-referenced. I have seen several examples of how this is done but I have not had an occasion that required that yet.

[bull]

Mike is great he really seems willing to add new features quickly, maybe because we point a lot of potential customers his way ;), the only thing I really want him to add now is WW terrain export, I still can't get dstile to give useable output for that.