They are true color. Isn't this the use case for InputTransparentColor? Is
there a known issue with it?
As far as the JPEG compression artifacts, this can be solved with LZW like
you suggest. But this is a different issue.
Jason Newmoyer
Newmoyer Geospatial Solutions
843.606.0424
ja...@newmoyergeospatial.com
On Tue, Jan 31, 2017 at 2:14 PM, Lonnie Matsuno <lonnie.mats...@valtus.com>
wrote:
> I'm not sure if this is the same issue, but we encountered "bleeding" of
> near black pixels with geotiff's with JPEG compression. We have
> subsequently switched to a lossless compression in our source geotiffs and
> it works pretty well.
>
>
>
> Lonnie
> ------------------------------
> *From:* Devin Eyre [devin.e...@stormgeo.com]
> *Sent:* January 31, 2017 12:01 PM
> *To:* Jason Newmoyer
>
> *Cc:* GeoServer Mailing List List
> *Subject:* Re: [Geoserver-users] Cannot get InputTransparentColor to work
> in ImageMosaic
>
> Have you tried this:
>
> http://osgeo-org.1560.x6.nabble.com/Re-How-should-i-
> set-output-transparent-color-no-color-in-image-mosaic-plug-
> in-in-Geo-server-version--td5027043.html
> ------------------------------
> *From:* Jason Newmoyer <ja...@newmoyergeospatial.com>
> *Sent:* Tuesday, January 31, 2017 11:33 AM
> *To:* Devin Eyre
> *Cc:* GeoServer Mailing List List
> *Subject:* Re: [Geoserver-users] Cannot get InputTransparentColor to work
> in ImageMosaic
>
> Yes, when I do that it turns the black areas transparent in the resulting
> image, as expected. However, the tiles still overlap each other instead of
> showing through.
>
> Here's a piece of the image. The area marked red I would expect to be
> imagery showing through from the tile underneath when using
> InputTransparentColor.
>
> [image: Inline image 1]
>
>
> Jason Newmoyer
> Newmoyer Geospatial Solutions
> 843.606.0424 <(843)%20606-0424>
> ja...@newmoyergeospatial.com
>
>
>
> On Tue, Jan 31, 2017 at 11:53 AM, Devin Eyre <devin.e...@stormgeo.com>
> wrote:
>
>> Have you tried setting OutputTransparentColor to 000000?
>> ------------------------------
>> *From:* Jason Newmoyer <ja...@newmoyergeospatial.com>
>> *Sent:* Tuesday, January 31, 2017 9:33 AM
>> *To:* GeoServer Mailing List List
>> *Subject:* [Geoserver-users] Cannot get InputTransparentColor to work in
>> ImageMosaic
>>
>> GeoServer 2.10, RHEL 6
>>
>> I cannot seem to get the InputTransparentColor configuration to work as
>> expected with my ImageMosaic layer. I have a mosaic of satellite imagery
>> (standard RGB, YCbCr JPEG compressed with overviews) tiled into a regular
>> grid of square tiles. Tile index is stored in PostGIS using a view. Tiles
>> are ordered (zindex column) so newest imagery ends up on top.
>>
>> When two tiles overlap, the evil black nodata fringe of the top most
>> layer shows over top of the next tile underneath. I believe
>> InputTransaparentColor is intended to fix this. However setting it to
>> 000000 actually results in a FULLY transparent image. Not an exception
>> response, an actual transparent png.
>>
>> The granules do not contain an alpha band, raster mask, or nodata values.
>> The nodata sections are actually fully black pixels.
>>
>> Any ideas?
>>
>> [image: Inline image 1]
>>
>> Jason Newmoyer
>> Newmoyer Geospatial Solutions
>> 843.606.0424 <(843)%20606-0424>
>> ja...@newmoyergeospatial.com
>>
>>
>>
>
>
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