[mapserver-users] geotiff 48bit with mapserver 7 wms

Tue Apr 18 05:12:46 PDT 2017

Hi,

maybe it would the better way to use the WCS-Interface? To be honest, I didn't use it that way by myself. But it sounds like that would be an proper scenario for WCS (doing some "more" with that data besides the classic "viewing").

To configure WCS shouldn't be that hard, I think:
http://mapserver.org/ogc/wcs_format.html
http://mapserver.org/de/ogc/wcs_server.html

Moreover QGIS has built-in WCS-support.

Just an idea...

Regards Ben

-----Ursprüngliche Nachricht-----
Von: mapserver-users [mailto:mapserver-users-bounces at lists.osgeo.org] Im Auftrag von David
Gesendet: Dienstag, 18. April 2017 00:14
An: mapserver-users at lists.osgeo.org
Betreff: Re: [mapserver-users] geotiff 48bit with mapserver 7 wms

Thank you very much Steve. You helped me to understand the problem!

David F.

------ Original Message ------
From: "Stephen Woodbridge" <woodbri at swoodbridge.com>
To: mapserver-users at lists.osgeo.org
Sent: 4/14/2017 9:54:20 PM
Subject: Re: [mapserver-users] geotiff 48bit with mapserver 7 wms

>Yeah, technically a geotiff can be any format, but mapserver only 
>supports a limit set for band widths.
>
>A new version of Mapcache was just released and it has GDAL support in 
>it  and serves WMS, but I'm not sure if it will do what you want.
>
>Sorry, I'm out of ideas on this.
>
>-Steve W
>
>On 4/14/2017 6:56 PM, David F. wrote:
>>I did not reply after my latest test, sorry.
>>I tried all tiff IMAGEMODE for my data set. None gave me 16 bit at the 
>>gis client.
>>As far as I understand gtiff is 8 bit.
>>The only IMAGEMODE for integer is signed INT16 , which is 
>>unfortunately the only supported integer data type. For RGB data 
>>unsigned integer is the only integer data type that makes sense. Just 
>>if i change the IMAGEMODE to FLOAT32 mapserver will serve more than 8 
>>bit per band.
>>I think i will give gdal and float32 bit a try nevertheless it will 
>>double the image size.
>>Maybe someone else has an idea.
>>
>>
>>
>>
>>
>>On April 14, 2017 1:43:09 PM Stephen Woodbridge 
>><woodbri at swoodbridge.com> wrote:
>>
>>>http://mapserver.org/mapfile/outputformat.html
>>>
>>>Why not serve them a GTiff format for qgis?
>>>
>>>You can define multiple output formats in the mapfile, and let the 
>>>browser use the 8bit png and have qgis request images in gtiff 
>>>format.
>>>
>>>-Steve
>>>
>>>On 4/13/2017 11:03 AM, David wrote:
>>>>Hi Steve,
>>>>
>>>>thank you very much for your help. The Mapserver is serving the 
>>>>tiles with the correct RGB values now. The problem is, that it is 
>>>>serving
>>>>8
>>>>bit per band and not 16 bit.
>>>>I need the 16bit because i want to use the wms as a base layer for 
>>>>some further processing with qgis or another gis client. So no 
>>>>problem regarding browsers for me.
>>>>
>>>>I will take a look and change the data type to float32 for the tiff 
>>>>files. At least this is an supported OUTPUTFORMAT for mapserver.
>>>>Any suggestions on this matter are highly appreciated.
>>>>
>>>>Cheers,
>>>>David
>>>>
>>>>------ Original Message ------
>>>>From: mapserver-users-request at lists.osgeo.org
>>>>To: mapserver-users at lists.osgeo.org
>>>>Sent: 4/12/2017 4:00:02 PM
>>>>Subject: mapserver-users Digest, Vol 111, Issue 5
>>>>
>>>>>Send mapserver-users mailing list submissions to
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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 <david at impstyle.com>
>>>>>To: mapserver-users at lists.osgeo.org
>>>>>Subject: [mapserver-users] geotiff 48bit with mapserver 7 wms
>>>>>Message-ID: 
>>>>><em5ce0e1b3-00b1-463e-8ad8-90100518d131 at 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
>>>>>-------------- next part -------------- An HTML attachment was 
>>>>>scrubbed...
>>>>>URL:
>>>>><http://lists.osgeo.org/pipermail/mapserver-users/attachments/20170
>>>>>412/2cded6b6/attachment-0001.html>
>>>>>
>>>>>
>>>>>------------------------------
>>>>>
>>>>>Message: 2
>>>>>Date: Tue, 11 Apr 2017 21:25:01 -0400
>>>>>From: Stephen Woodbridge <woodbri at swoodbridge.com>
>>>>>To: mapserver-users at lists.osgeo.org
>>>>>Subject: Re: [mapserver-users] geotiff 48bit with mapserver 7 wms
>>>>>Message-ID: <a7bc734d-f7b9-32f3-5ce0-6a71aab4ead4 at swoodbridge.com>
>>>>>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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>>>>>>  mapserver-users at lists.osgeo.org
>>>>>>  https://lists.osgeo.org/mailman/listinfo/mapserver-users
>>>>>>
>>>>>
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