Hi all!<br> <br>I have a problem when producing overviews in a jpeg compressed tiff.with Gdal 1.7.2, Windows 7<br> <br>After my basic image is produced, with the GeoTIFF driver, I call BuildOverviews("GAUSS",overviewlist,nothing,nothing)<br>
overviewlist is 2,4,8,16,32,64,128<br>(It's a <a href="http://VB.NET">VB.NET</a> 2010 app.)<br>I get this message: GetBlockRef failed at X block offset 1, Y block offset 0<br>It's the same in my program as in GdalOverviews.<br>
The basic image is made line by line with RGB bands.<br> <br>The image is 7588 by 5492 pixels.<br>I use PHOTOMETRIC=YCBCR,PROFILE=GEOTIFF,COMPRESS=JPEG,TILED=YES<br>If I add BIGTIFF=YES when creating it, the overviews generation seem to work, but the colors are all messed up in the overviews<br>
<br>Hints, anyone?<br>