GeoServer

WMS raster interpolation settings are ignored

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Critical Critical
  • Resolution: Fixed
  • Affects Version/s: 1.7.0-beta1
  • Fix Version/s: 1.6.5, 1.7.0-beta2
  • Component/s: WMS
  • Labels:
    None
  • Number of attachments :
    5

Description

This happens at least on 1.7.x, haven't tried out in 1.6.x

Attachments

  1. Text File
    12_1020_6055_gdalinfo.txt
    29/Jul/08 3:57 AM
    0.6 kB
    Guillaume Lathoud
  2. Text File
    12_1020_6055_identify_verbose.txt
    29/Jul/08 3:57 AM
    15 kB
    Guillaume Lathoud
  1. wms-164b-bicubic-2.jpg
    71 kB
    29/Jul/08 2:05 AM
  2. wms-164b-bilinear-2.jpg
    71 kB
    29/Jul/08 2:04 AM
  3. wms-164b-nn-2.jpg
    70 kB
    29/Jul/08 2:04 AM

Issue Links

This issue is related to:
GEOS-2060 WMS rendering options are not honored on apply, only on save Blocker Closed

Activity

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Permalink
Guillaume Lathoud added a comment -

Geoserver 1.6.4b with WMS > Rendering > Nearest neighbour

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Guillaume Lathoud added a comment - Geoserver 1.6.4b with WMS > Rendering > Nearest neighbour
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Guillaume Lathoud added a comment -

Geoserver 1.6.4b with WMS > Rendering > Bilinear

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Guillaume Lathoud added a comment - Geoserver 1.6.4b with WMS > Rendering > Bilinear
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Guillaume Lathoud added a comment -

Geoserver 1.6.4b with WMS > Rendering > Bicubic

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Guillaume Lathoud added a comment - Geoserver 1.6.4b with WMS > Rendering > Bicubic
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Guillaume Lathoud added a comment -
  • With 1.7.0-beta1 I obtained exactly (=pixelwise) the same result for all three settings of WMS > Rendering.
  • With 1.6.4b I obtained very slight differences (effective size and bounding box) but the processing seems to be the same (I suspect nearest neighbour).
Show
Guillaume Lathoud added a comment -
  • With 1.7.0-beta1 I obtained exactly (=pixelwise) the same result for all three settings of WMS > Rendering.
  • With 1.6.4b I obtained very slight differences (effective size and bounding box) but the processing seems to be the same (I suspect nearest neighbour).
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Andrea Aime added a comment -

Daniele, Simone, any idea about what's going on here? Maybe the new raster renderer code has issues with intepolation settings?
Guillame, one question, do you have overviews embedded in your raster data? GeoServer will use them, so the starting point for interpolation will look just as good as the overview you have. I'm asking because most tools default on nn interpolation when creating the overviews.

Show
Andrea Aime added a comment - Daniele, Simone, any idea about what's going on here? Maybe the new raster renderer code has issues with intepolation settings? Guillame, one question, do you have overviews embedded in your raster data? GeoServer will use them, so the starting point for interpolation will look just as good as the overview you have. I'm asking because most tools default on nn interpolation when creating the overviews.
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Guillaume Lathoud added a comment -

The raster data is a bunch of PNG files so I guess not.

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Guillaume Lathoud added a comment - The raster data is a bunch of PNG files so I guess not.
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Permalink
Guillaume Lathoud added a comment -

gdalinfo output on a raster

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Guillaume Lathoud added a comment - gdalinfo output on a raster
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Permalink
Guillaume Lathoud added a comment -

"identify -verbose" output on a raster

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Guillaume Lathoud added a comment - "identify -verbose" output on a raster
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Simone Giannecchini added a comment -

committed initial fix on 1.7.x

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Simone Giannecchini added a comment - committed initial fix on 1.7.x
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Andrea Aime added a comment -

Simone noticed GEOS-2060 while fixing 2057

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Andrea Aime added a comment - Simone noticed GEOS-2060 while fixing 2057
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Andrea Aime added a comment -

Fixed on 1.6.x and trunk as well.

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Andrea Aime added a comment - Fixed on 1.6.x and trunk as well.
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Guillaume Lathoud added a comment -

The nightly version 1.7.x-073008 worked on my side as well. Thanks for the fast work!

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Guillaume Lathoud added a comment - The nightly version 1.7.x-073008 worked on my side as well. Thanks for the fast work!
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Andrea Aime added a comment -

The merit goes to Simone Giannecchini that provided the actual patch, thanks a lot from my side as well.

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Andrea Aime added a comment - The merit goes to Simone Giannecchini that provided the actual patch, thanks a lot from my side as well.

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Dates

  • Created:
    Updated:
    Resolved:
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