[MapProxy] color depth reduction

[Sandor Csaba]

Hi Martin,

Thanks for the info.

Here's my cache setting:

  Ortho_romai_sztendre2_cache:
    meta_buffer: 20
    meta_size: [5, 5]
    format: image/png
    request_format: image/png
    link_single_color_images: true
    grids: [Ortho_romai_sztendre2_grid]
    sources: [Ortho_romai_sztendre_source]
    watermark:
      text: fototerkep.hu
    cache:
      type: mbtiles
      filename: /home/viamap/tilecache/Ortho_romai_sztendre2.mbtiles


And the image/png setting from globals/image:

  image:
      formats:
        image/png:
          mode: RGBA
          transparent: true
          resampling_method: bilinear

I  notice the difference in resampling method and the colors: 0 and
transparent: false

I'll try these settings.

Can you explain your remark using png for aerial images?

Thanks a lot,
Csaba




On 8 July 2013 15:34, Martin Kokeš <shr3k at typo3-hosting.com> wrote:

> **
> Hi Csaba,
>
> It's shame you don't post your yaml, but I suggest:
>
> globals:
>   image:
>     formats:
>       png24:
>         format: image/png
>         mode: RGBA
>         colors: 0
>         transparent: false
>         resampling_method: bicubic
>
> And use this image format in your cache settings.
>
> BTW are you using PNG format for air/satellite imagery consciously?
>
> Martin
>
> *From:* Sandor Csaba [mailto:sandor.csaba at viamap.hu]
> *To:* mapproxy at lists.osgeo.org [mailto:mapproxy at lists.osgeo.org]
> *Sent:* Mon, 08 Jul 2013 15:20:36 +0200
> *Subject:* [MapProxy] color depth reduction
>
>
> Hi List,
>
> Do you have any thoughts on the color degradation experienced here:
>
> http://map.fototerkep.hu/arviz/index.html?x=355676.5&y=5281953.375&zoom=8
>
> See the swimming pool's blue color transition.
>
> Any suggestions setting the image properties?
>
> On the original geotiffs the color transition is smooth.
>
> http://webmap.viamap.hu/upload/ortho_tiff_comp.jpg
>
> Thanks,
> Csaba
>
> --
> Sándor Csaba
> szolgáltatási vezető
> ViaMap Kft.
> Székhely/postacím: 2176 Erdőkürt, Téglaház utca 4.
>
> Iroda:
> 1076 Budapest, Garay u. 29-31. I. 1.
> (EMLA Környezeti Management és Jog Egyesület)
>
>
> Tel: +3630/9605853
> Fax: +3617002542
>
>
> _______________________________________________
> MapProxy mailing list
> MapProxy at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/mapproxy
>
>


-- 
Sándor Csaba
szolgáltatási vezető
ViaMap Kft.
Székhely/postacím: 2176 Erdőkürt, Téglaház utca 4.

Iroda:
1076 Budapest, Garay u. 29-31. I. 1.
(EMLA Környezeti Management és Jog Egyesület)


Tel: +3630/9605853
Fax: +3617002542
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