[mapserver-users] Artifacts on raster dataset after using gdaladdo

[Dejan Gambin]

Hi,

I have a set of aerial ortophoto images. I have done the following:

1. gdal_translate -co "TILED=YES" on all of them
2. gdaladdo 2 4 8 16 on all of them
3. gdaltindex

The problem is - artifacts appear in the lower right corner of each raster file (tiled and overviewed). They ave different colors depending of the scale. For example, on 1:15000 scale they appear as yellow squares. On 1:10000 scale they appear as blue _| (reverse "L").  On 1:5000 they disappear

I investigated and found out this happens after using gdaladdo. I am using gdaladdo from gdal-bin on 64bit debian. The version of gdal-bin is 1.5.2-3. I saw similar issues reported in ticket #2346 2 years ago. Should I use newer GDAL library?

regards, dejan
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