Seeker wrote:
> 
> I want to select a rectangular selection from an image (sky for example) and
> use the selection to be used as seamless background.
> 
> I have used Photoshop and KPT' seamless welder and they produce very visible
> lines and tiles that look bad. Is there any really good utility out there that
> can make that effect?
>...

If you have Corel PhotoPaint then I could send you a simple 
script I made for that purpose. But basically its just 
using a simple 50% horiz./50% vert. offset and smoothing 
(Gaussian blur step 2 or sth.) the edges/ lines (the cross 
in the middle by masking a "star" form). 

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http://www.geocities.com/SiliconValley/Lakes/7784