Opened 12 years ago

Closed 8 years ago

#3915 closed defect (wontfix)

dumpoverviews drops the color palette

Reported by: jcrepetto Owned by: warmerdam
Priority: normal Milestone:
Component: GDAL_Raster Version: svn-trunk
Severity: normal Keywords:


When I use dumpoverviews on an image with a color palette, the result is a gray level image.

Example :

$ gdalinfo -noct World.ozf2
Driver: OZI/OZI
Band 1 Block=64x64 Type=Byte, ColorInterp=Palette
Overviews: 527x512, 211x205, 105x102, 53x51
Color Table (RGB with 256 entries)

$ dumpoverviews World.ozf2

$ gdalinfo World_1_0.tif
Driver: GTiff/GeoTIFF
Band 1 Block=527x15 Type=Byte, ColorInterp=Gray

Change History (2)

comment:1 by Jukka Rahkonen, 8 years ago

What to say about this? I found code for dumpoverviews at but at least Windows binaries from gisinternals do not come with this utility.

When it comes to the issue, does it mean that if overviews come from a paletted image then also the palette should be copied into the overview dump?

comment:2 by Jukka Rahkonen, 8 years ago

Resolution: wontfix
Status: newclosed

The dumpoverviews tool seem to be a special tool that is only documented in the source code and it is not even compiled by default. I am closing the ticket as wontfix. It does not mean that the ticket is invalid but I think that copying and attaching palettes would better suit for some general palette tool than as an extra feature of dumpoverviews. As a workaround it should be possible to read the dumped overviews through a VRT file that includes the palette.

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