[ptx] gimp/krita help in removing artifacts

[Michael Galloway]

thanks bruno, that got me moving in the right direction again.

-- michael

On Wed, Dec 28, 2005 at 01:17:35AM +0000, Bruno Postle wrote:
> 
> Not off-topic at all, this should be a hugin tutorial since it isn't 
> very well documented...
> 
> You can control the position of seams by masking out areas you don't 
> want with an 'alpha channel'.
> 
> There are two ways of doing this; modify the original photos before 
> loading them into hugin, or modify the 'multiple TIFF' output from 
> nona before running enblend manually.  I find the first technique is 
> simpler.
> 
> Either way, you need to save as a file format that supports alpha 
> channels such as PNG or TIFF (JPEG is no good here).  Note that all 
> the files in a project need to be the same format - If you mix PNG 
> images with alpha channels and JPEG photos, nona fails silently and 
> produces no output.
> 
> To create an alpha channel in the gimp, select Layer -> Transparency 
> -> Add Alpha Channel.  Mask out the areas that you don't want with 
> the 'eraser' tool or select and delete with the 'lasso'.  
> Erased/transparent areas are shown with a grey 'checkerboard' 
> pattern.
> 
> That's it, other than that you can just follow John Houghton's 
> tutorial for PTGui.
> 
> -- 
> Bruno
>