[mapserver-users] 16 bit PNG or 16 bit jpeg output

[Rahkonen Jukka]

Hi,

I believe you can configure Mapserver to create also compressed tiffs. There are many alternatives to choose on the gdal driver page http://gdal.org/frmt_gtiff.html

-Jukka Rahkonen-
________________________________
Ragi Burhum wrote:

> Hello Jukka and Stephan,

> Thank you a lot for the pointer. Yes, version 1.0.0 definitely does the trick and I will use that instead. I got a big confused with the documentation and it was not too clear to me that was the behavior. Thank you!

> As far as my original question for 16bit png (or jpeg) output, is there something that can be done about that?

> The tiff output files I get are too big for such a small area and it makes unusable for mobile devices.

Thanks again,

- Ragi


Date: Thu, 19 Jan 2012 18:46:37 +0100
From: Stephan Mei?l <stephan at meissl.name<mailto:stephan at meissl.name>>
Subject: Re: [mapserver-users] 16 bit PNG or 16 bit jpeg output
To: Rahkonen Jukka <Jukka.Rahkonen at mmmtike.fi<mailto:Jukka.Rahkonen at mmmtike.fi>>
Cc: "mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org>"
       <mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org>>
Message-ID: <1326995197.2995.49.camel at io>
Content-Type: text/plain; charset="UTF-8"

Hi,

if you omit the mediatype parameter with version 2.0 you definitely get
back only the binary output as requested in the format parameter. In WCS
1.1 afaik you always get back a multipart response and in WCS 1.0 always
only the binary.

cu
Stephan


On Thu, 2012-01-19 at 17:16 +0000, Rahkonen Jukka wrote:
> Hi,
>
> No way, I mean the WCS version 1.0 as described in the very same document http://www.mapserver.org/ogc/wcs_server.html
>
> -Jukka Rahkonen-
>
>
> ________________________________
> LƤhettƤjƤ: Ragi Burhum [ragi at burhum.com<mailto:ragi at burhum.com>]
> LƤhetetty: 19. tammikuuta 2012 19:02
> Vastaanottaja: mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org>; Rahkonen Jukka
> Aihe: Re: [mapserver-users] 16 bit PNG or 16 bit jpeg output
>
> Hi Jukka,
>
> I assume you mean WCS 2.0 and that you are referring to the MEDIATYPE directive. The documentation at http://mapserver.org/ogc/wcs_server.html#test-your-wcs-1-0-server said that only "multipart/mixed" was allowed. Am I mistaken?
>
> Date: Thu, 19 Jan 2012 08:13:54 +0000
> From: Rahkonen Jukka <Jukka.Rahkonen at mmmtike.fi<mailto:Jukka.Rahkonen at mmmtike.fi><mailto:Jukka.Rahkonen at mmmtike.fi<mailto:Jukka.Rahkonen at mmmtike.fi>>>
> Subject: Re: [mapserver-users] 16 bit PNG or 16 bit jpeg output
> To: "'mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org><mailto:mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org>>'"
>        <mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org><mailto:mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org>>>
> Message-ID:
>        <84446DEF76453C439E9E97E438E13A63063812 at suutari.haapa.mmm.fi<mailto:84446DEF76453C439E9E97E438E13A63063812 at suutari.haapa.mmm.fi><mailto:84446DEF76453C439E9E97E438E13A63063812 at suutari.haapa.mmm.fi<mailto:84446DEF76453C439E9E97E438E13A63063812 at suutari.haapa.mmm.fi>>>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi,
>
> Could it be possible for you to use WCS 1.0.0 for avoiding the multipart thing?
>
> -Jukka Rahkonen-
>
> ________________________________
> Ragi Burhum  wrote:
> Hello,
>
> I am trying to output a single band 16bit png (or jpeg) output from a Mapserver WCS service.
>
> I have tried the following output formats:
>
> OUTPUTFORMAT
>    NAME jpeg
>    DRIVER "GDAL/JPEG"
>    MIMETYPE "image/jpeg"
>    IMAGEMODE INT16
>    EXTENSION "jpg"
>    FORMATOPTION "QUALITY=85"
>  END
>
> OUTPUTFORMAT
>    NAME GDALPNG
>    DRIVER "GDAL/PNG"
>    MIMETYPE "image/png"
>    IMAGEMODE INT16
>    EXTENSION "png"
>    FORMATOPTION "FILENAME=result.png"
>  END
>
> When I try different IMAGEMODEs, I get the correct results, but for some reason, INT16 does not work. I looked through the mailing list and I noticed that this question has been asked before:
>
> http://osgeo-org.1803224.n2.nabble.com/16-Bit-PNG-Output-td6249725.html
> http://osgeo-org.1803224.n2.nabble.com/Using-a-16-bit-per-band-PNG-image-td2490088.html
>
> I tried looking for a ticket in Trac, but I had no luck. Am I doing something wrong? Perhaps I could accomplish this somehow with a custom gdal driver?
>
> Also, a side question, if I wanted to make sure the replies from my WCS getcoverage calls were not multipart (I am just interested in the binary output), is there some mapserver-specific setting I can use to just get that image as a reply instead of the accompanying xml files?
>
> Thanks!
>
> - Ragi
