I seem to be able to duplicate the staggered lines with any binary image,
with any set of points. Grayscale and color images rubbersheet fine.
The only solution I have found so far is to temporarily convert the image to
grayscale (8-bit/palette) using IDEPTH, rubbersheet it, then convert it back
to binary (1-bit). It seems to be a quick conversion, and provides good
quality output from what I have tested.
"ppanek"
wrote in message news:40d362ea$1_3@newsprd01...
> Thanks for the input Chris.
> I have posted 2 files: Before.cal and After.cal example files of the
> distortion in Autodesk.autocad.curtomer-files. All the LD2005 stations in
> office produce the same error while rubbersheeting. We used triangular
> rubbersheeting in this example but polynomial method yields the same
error.
>
> Before.cal - raster before rubbersheeting
> After.cal - raster after rubbersheeting,
>
> 4 anchor points at 4 border corners
> 2 anchor points at North and South end of line labeled 97.37'
> 1 source - destination point at the East end of line labeled 125.18'
> 1 source - destination point at the East end of line labeled 124.17'
> Requested shift at the 2 source - destination points was no bigger than 1%
> of the length of entire raster image in this example.
> We tested much smaller shifts with exactly same very bad, unacceptable
> result.
> Any help will be greatly appreciated,
> Przemek Panek
>
>