Re: [Gimp-user] fuzzy logic possibly usefull to find almost perfect overlaps?

2007-04-16 Thread Bruno Postle
On Mon 16-Apr-2007 at 07:57 -0400, John R. Culleton wrote:
>>
>>   http://hugin.sf.net/
>>
>> These tools can be used together to streamline panorama generation
>> and can be used to create fabulous (and massive) wide-angle images.
>
> Are these tools useful for top-to-bottom merges or even diagonal 
> merges?

You can use them to stitch pictures in any arrangement (rows, 
columns, grids, random rotations, etc...) if that is what you mean.

-- 
Bruno
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Re: [Gimp-user] fuzzy logic possibly usefull to find almost perfect overlaps?

2007-04-16 Thread John R. Culleton
On Sunday 15 April 2007 22:51, Toby Haynes wrote:
> Julien Michielsen wrote:
> > It regularly so happens I'd like to merge/overlap two digital
> > pictures. Gimp does have tools to fit two pictures by hand (take
> > one picture as a layer, and turn and twist them till they fit
> > almost perfectly). However, almost perfectly may not be good
> > enough, and I wonder if a search proce- dure could be develloped
> > to find margins of two pictures that almost perfectly overlap?
>
> What you want is a technique like the SIFT algorithm to identify
> similar features in two images. I recommend the autopano-sift
> tools:
>
>   http://user.cs.tu-berlin.de/~nowozin/autopano-sift/
>
> Also available is Autopano (which is a different program)
>
>   http://autopano.kolor.com/
>
> While you are looking at this, if you are interested in panoramas
> or even just trying to make a larger image out of two overlapping
> scans, you should also try Hugin
>
>   http://hugin.sf.net/
>
> These tools can be used together to streamline panorama generation
> and can be used to create fabulous (and massive) wide-angle images.
>
> Cheers,
> Toby Haynes
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Are these tools useful for top-to-bottom merges or even diagonal 
merges?

-- 
John Culleton
Able Indexing and Typesetting
Precision typesetting (tm) at reasonable cost.
Satisfaction guaranteed. 
http://wexfordpress.com



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Re: [Gimp-user] fuzzy logic possibly usefull to find almost perfect overlaps?

2007-04-15 Thread Toby Haynes
Julien Michielsen wrote:
> It regularly so happens I'd like to merge/overlap two digital pictures.
> Gimp does have tools to fit two pictures by hand (take one picture as a
> layer, and turn and twist them till they fit almost perfectly). However,
> almost perfectly may not be good enough, and I wonder if a search proce-
> dure could be develloped to find margins of two pictures that almost
> perfectly overlap? 
What you want is a technique like the SIFT algorithm to identify similar 
features in two images. I recommend the autopano-sift tools:

  http://user.cs.tu-berlin.de/~nowozin/autopano-sift/

Also available is Autopano (which is a different program)

  http://autopano.kolor.com/

While you are looking at this, if you are interested in panoramas or 
even just trying to make a larger image out of two overlapping scans, 
you should also try Hugin

  http://hugin.sf.net/

These tools can be used together to streamline panorama generation and 
can be used to create fabulous (and massive) wide-angle images.

Cheers,
Toby Haynes
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Re: [Gimp-user] fuzzy logic possibly usefull to find almost perfect overlaps?

2007-04-15 Thread Chris Mohler
On 4/15/07, Julien Michielsen <[EMAIL PROTECTED]> wrote:
> It regularly so happens I'd like to merge/overlap two digital pictures.
> Gimp does have tools to fit two pictures by hand (take one picture as a
> layer, and turn and twist them till they fit almost perfectly). However,
> almost perfectly may not be good enough, and I wonder if a search proce-
> dure could be develloped to find margins of two pictures that almost
> perfectly overlap?  I suppose it will be impossible to find regions that
> really perfectly overlap, as the light may vary, a butterfly might
> happen to have come inside the picture, and so on.  I may be mistaken,
> but as far as I know photoshop can automaticaly overlap two pictures.
> Did Gimp ever try to automaticaly achieve perfect overlaps of two pic-
> tures, and - if this had been considered impossible - have the merits of
> fuzzy logic been considerd to achieve this aim?
> --
> Julien Michielsen

Hi,

Have you ever tried hugin?
http://hugin.sourceforge.net/

Chris
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[Gimp-user] fuzzy logic possibly usefull to find almost perfect overlaps?

2007-04-15 Thread Julien Michielsen
It regularly so happens I'd like to merge/overlap two digital pictures.
Gimp does have tools to fit two pictures by hand (take one picture as a
layer, and turn and twist them till they fit almost perfectly). However,
almost perfectly may not be good enough, and I wonder if a search proce-
dure could be develloped to find margins of two pictures that almost
perfectly overlap?  I suppose it will be impossible to find regions that
really perfectly overlap, as the light may vary, a butterfly might
happen to have come inside the picture, and so on.  I may be mistaken,
but as far as I know photoshop can automaticaly overlap two pictures.
Did Gimp ever try to automaticaly achieve perfect overlaps of two pic-
tures, and - if this had been considered impossible - have the merits of
fuzzy logic been considerd to achieve this aim?
-- 
Julien Michielsen

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