[udig-devel] Re: ImageIO-GDAL integration

[Guido Lemoine]

Is there any quantitative data on ECW versus GeoTIFF comparison (speed, 
quality)?
GeoTIFF appears more "open" than ECW, which also has some nasty 
limitations on
maximum size allowed in the "free" codec. I recall that GDAL was 
implementing
JPEG2000 compression in the GeoTIFF standard, but may be wrong on that.

GL

Aleksander Bandelj wrote:

> My experience is that ECW decoding is much more expensive than TIFF 
> one. So, compactness yes, speed no. Fine for a single client, but not 
> so good for a server ...
>
> Andrea Aime wrote:
>
>> Paul Ramsey ha scritto:
>>
>>> I would very much like to see an ECW driver or (even better) a 
>>> JP2000 driver from this project, as such a thing would be widely 
>>> useful for end users.  My priority order would be: JP2000, LAN, ECW, 
>>> AUX.  I assume GeoTIFF is already handled by the existing coverage 
>>> work?  If not, it would go first.
>>>
>> Well, I second Daniele's choice since, at least here in Italy, you 
>> either support
>> ECW or they'll start laughing at you. Geotiff is so '90s (it has his 
>> merits, but
>> everybody seems to have gone nuts for ECW's speed and compactness).
>>
>> Cheers
>> Andrea
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