[Gvsig_english] QUESTION gvSIG -- Image files with fast rewrites

[Simon Cropper (Botanicus Australia Pty Ltd)]

Hi,

Most of my clients provide aerial photography in ECW format. These images 
provide high resolution, are relatively small and quickly rewrite on the 
screen when panning.

Lately I have been getting JPG files. These files however are quite big and take 
significantly longer time to rewrite.

What is an alternative image format to ECW in the 'open free' environment? 
Something GDAL can be used to convert from JPG without jumping through hoops.

Ideally the file sizes should be low despite the high resolution, gvSIG able to 
read it natively and is quick to rewrite when panning.

Any suggestions would be appreciated.

PS. I know gdal_translate can, supposedly convert between JPG and ECW, but 
despite many attempts I have been unable to get this to work. I am looking for 
something else, if possible, that has the same intrinsic properties but is 
recognized by default in the gdal libraries so that every time I get an update 
of the 'free' Ubuntu version the FWTools or alternative 'commercially enabled' 
version is not replaced.

-- 
Cheers Simon
     Simon Cropper 
     Botanicus Australia Pty Ltd
     PO Box 160, Sunshine, Victoria 3020.
     P: 9311 5822. M: 041 830 3437.
     mailto: scropper at botanicusaustralia.com.au 
     web: www.botanicusaustralia.com.au 

(C) Simon Cropper 2010. Creative Commons Attribution-ShareAlike 3.0 Australia
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