Hi Even,
From: even.roua...@spatialys.com
To: lucena_i...@hotmail.com
Subject: Re: [gdal-dev] RFC 15: Band Masks vs #5621
Date: Wed, 20 Aug 2014 20:39:29 +0200
CC: gdal-dev@lists.osgeo.org
I am trying to help a developer how wants to use VRTs as an intermediary
between a GeoRaster
Selon Ivan Lucena lucena_i...@hotmail.com:
Hi Even,
From: even.roua...@spatialys.com
To: lucena_i...@hotmail.com
Subject: Re: [gdal-dev] RFC 15: Band Masks vs #5621
Date: Wed, 20 Aug 2014 20:39:29 +0200
CC: gdal-dev@lists.osgeo.org
I am trying to help a developer how wants
Ivan,
You can declare a mask flag to 0 to indicate that this is a per-band mask band.
This is perfectly legal.
You might decide either to set NBITS=1 as metadata to that mask band, or promote
it to full 8 bit (0-0, 1-255).
As far as which format natively supports that, I can't think to any.
Even,
Date: Wed, 20 Aug 2014 10:28:14 +0200
From: even.roua...@spatialys.com
To: lucena_i...@hotmail.com
CC: gdal-dev@lists.osgeo.org
Subject: Re: [gdal-dev] RFC 15: Band Masks vs #5621
Ivan,
You can declare a mask flag to 0 to indicate that this is a per-band mask
band
I am trying to help a developer how wants to use VRTs as an intermediary
between a GeoRaster and a PNG, in order to produce thumbnails. In that
case, does the VRT needs to describe the mask band so that the PNG's
driver will received the filtered image, with the zeroes regions masked
out?
That question is probably for Even, Frank or some the developer of drivers that
support mask band.
I am working on ticket #5621 and trying to adapt it to the RFC 15 but I am not
quite sure that I am getting it right.
In GeoRaster, I can have a bitmap mask band that can be applied to all bands,
