Display GeoTIFF-data (>8bit) with the Mapserver

[Wolfgang Qual]

Dear Mr. Adams,
I have two questions about the conversion of the GeoTIFF:
- how big were your ikonos-pictures? Ours are about 500 MB! I tried to
open the file with GIMP, but it did not work
- what about the header-information in the GeoTIFF (projection, ...) ?

Thanks,

Wolfgang

---

Till Adams schrieb:

> Wolfgang Qual wrote:
>
>> We purchased IKONOS-Satellite images (data format GeoTIFF, 16bit) and
>> would like to get it into a mapserver map. However, this data is not
>> supported by the mapserver. We got the error message:
>> "drawTIFF(): Image handling error. Only 1, 4, and 8-bit images are
>> supported."
>> Tried to make a 8bit GeoTIFF of it using the gdal-utility rgb2pct.py,
>> but it just produced strange results (strange colors).
>>
>> Anybody there, who managed it to put such data into a mapserver map? How
>> can I produce a nice 8-bit image of the data without losing the
>> information of the satellite image?
>>
>> Thanks.
>>
>>
>> Wolfgang Qual
>>
> Dear Mr. Qual,
>
> we put an ikonos image of southern cologne into umn (v4.0/4.25/4.4) and
> had no problems - we
> converted it with IrfanView (running per wine under my mandrake ;-)) and
> still
> can see the waterbubbles behind the ships on the Rhine.
>
> Greetings from Bonn,
>
> Till Adams
>