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Today's Topics:
1. geotiff 48bit with mapserver 7 wms (David)
2. Re: geotiff 48bit with mapserver 7 wms (Stephen Woodbridge)
----------------------------------------------------------------------
Message: 1
Date: Wed, 12 Apr 2017 00:22:12 +0000
From: David <[email protected]>
To: [email protected]
Subject: [mapserver-users] geotiff 48bit with mapserver 7 wms
Message-ID:
<em5ce0e1b3-00b1-463e-8ad8-90100518d131@laptop-dfriedrich>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Hi there,
iam having some trouble to serve 48 bit geotiff images with a
mapserver
7 wms. I created to layers for speed purposes with scale limiters.
The
lowres layer is served well and looks good, it is 24bit geotiff
data(8bit per channel). But if the layer changes to the highres,
48bit
geotiff data(16bit per channel), the data is shown wrong.
I searched for some hints regarding a similar issue but could not
find
something.
This is a screenshot of the loaded highres layer. It does not
matter if
i load a bbox inside the browser, qgis or another wms client. The
highres data looks always the same.
image loaded from highres layer:
http://imgur.com/a/B65cp
the mapfile:
https://pastebin.com/4G2DZErZ
the gdalinfo for one 16bit 3-band tile:
https://pastebin.com/kfS0BjmE
Best Regards,
David
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Message: 2
Date: Tue, 11 Apr 2017 21:25:01 -0400
From: Stephen Woodbridge <[email protected]>
To: [email protected]
Subject: Re: [mapserver-users] geotiff 48bit with mapserver 7 wms
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8; format=flowed
Read this:
http://mapserver.org/input/raster.html
You need to add to your highres layer
PROCESSING "SCALE=AUTO"
Or per band scaling. I done thing most browsers know what to do
with 16
bits per channel.
-Steve W
On 4/11/2017 8:22 PM, David wrote:
Hi there,
iam having some trouble to serve 48 bit geotiff images with a
mapserver
7 wms. I created to layers for speed purposes with scale
limiters. The
lowres layer is served well and looks good, it is 24bit geotiff
data(8bit per channel). But if the layer changes to the highres,
48bit
geotiff data(16bit per channel), the data is shown wrong.
I searched for some hints regarding a similar issue but could not
find
something.
This is a screenshot of the loaded highres layer. It does not
matter if
i load a bbox inside the browser, qgis or another wms client. The
highres data looks always the same.
image loaded from highres layer:
http://imgur.com/a/B65cp
the mapfile:
https://pastebin.com/4G2DZErZ
the gdalinfo for one 16bit 3-band tile:
https://pastebin.com/kfS0BjmE
Best Regards,
David
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