[mapserver-users] Nice satellite images rendering in MS

[Paul Ramsey]

Since mapserver as of 3.6 only supports 8bit output, 24bit images get
knocked down to 8bit. This 'knocking down' process can generate a really
UGLY image, or an acceptable image. I have found that using a program
like 'convert' to do the 24-8 conversion first gives me better results
than just relying on mapserver to do the conversion itself. So I
generate 8bit tiffs with convert which I then hand to mapserver to use.

P.

YC Nyon wrote:
> 
> I am putting up satellite images (Landsat) and shaded relief images in MS.
> Used Erdas to process them and exported it
> to Geotiff. The rendered maps is quite poor quality as it can't seem to
> display the full range of  the colors.
> 
> Here is some of the methods i tried to improve;
> 1. output the MS images to jpeg rather than gif. slight improvement. also
> increased the quality to 90 but same output plus a 130k file output.
> 
> 2. haven't tried this but has anybody tried using Erdas lan format or maybe
> i should convert the erdas images to jpeg world files.
> 
> I'm open to suggestions.
> 
> Thanks
> Nyon