[FWTools] BuildOverviews in JPEG compressed TIF

[Helge Morkemo]

Hi all!



I have a problem when producing overviews in a jpeg compressed tiff.with
Gdal 1.7.2



After my basic image is produced, with the GeoTIFF driver, I call
BuildOverviews("GAUSS",overviewlist,nothing,nothing)

overviewlist is 2,4,8,16,32,64,128

(It's a VB.NET 2010 app.)

I get this message: GetBlockRef failed at X block offset 1, Y block offset 0

It's the same in my program as in GdalOverviews.

The basic image is made line by line with RGB bands.



The image is 7588 by 5492 pixels.

I use PHOTOMETRIC=YCBCR,PROFILE=GEOTIFF,COMPRESS=JPEG,TILED=YES

If I add BIGTIFF=YES when creating it, the overviews generation seem to
work, but the colors are all messed up in the overviews



Hints, anyone?

-

Helgemor
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