[hugin-ptx] Re: Enfuse unpicks alignment - what's up?

[Doug]

Gerry Patterson wrote:
>
>
>
> On Aug 7, 2009, at 11:36 AM, Doug  wrote:
>
>   
>> Thanks Gerry and Harry,
>> I've followed your advice but the images are still badly misaligned.
>>
>> Doug
>>
>>
>>
>> 
>
> Did you move very much between taking the shots?  Was there a large  
> time lag that has caused things to move?
>   
No. The two photos were taken immediately after one another (they could 
have been automatic bracketing shots, but I don't remember) with maybe 
only a slight shift due to the camera being handheld.
The peculiar thing is that the alignment is really bad  -  a careless 
manual adjustment of the two images as Gimp layers would easily get a 
very much better result.
Doug

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[hugin-ptx] Re: Enfuse unpicks alignment - what's up?

[Harry van der Wolf]

If there's much misalignment, as Gerry states, you might try
align_image_stack with the "scale down" option like:
"align_image_stack -s 2 -a AIS "
or
"align_image_stack -s 3 -a AIS "

I know the scale down option looks weird as it seems that you will loose
accuracy, but my personal experience (and from some of the other ImageFuser
users) is that scaling down really helps in case of bad aligned images.
It helps as align_image_stack can only focus on the real "steady" pixels.

Harry

2009/8/7 Gerry Patterson 

>
>
>
>
>
> On Aug 7, 2009, at 11:36 AM, Doug  wrote:
>
> >
> > Thanks Gerry and Harry,
> > I've followed your advice but the images are still badly misaligned.
> >
> > Doug
> >
> >
> >
>
> Did you move very much between taking the shots?  Was there a large
> time lag that has caused things to move?
>
> >
>

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[hugin-ptx] Re: Enfuse unpicks alignment - what's up?

[Gerry Patterson]

On Aug 7, 2009, at 11:36 AM, Doug  wrote:

>
> Thanks Gerry and Harry,
> I've followed your advice but the images are still badly misaligned.
>
> Doug
>
>
>

Did you move very much between taking the shots?  Was there a large  
time lag that has caused things to move?

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[hugin-ptx] Re: Enfuse unpicks alignment - what's up?

[Doug]

Thanks Gerry and Harry,
I've followed your advice but the images are still badly misaligned.

Doug


Harry van der Wolf wrote:
> The simplest would be:
> "align_image_stack -a AIS "
>
> This would make align_image_stack create aligned images having the 
> prefix AISx.tif from your (two) source images.
> Then do:
>
> "enfuse -o  AIS*"
>
> Or you could use one of the available gui's to do all that for you:
> OSX: ImageFuser or enfuseGui or Bracketeer (last one not free)
> Linux: KImageFuser
> Windows: enfuseGui
>
> Harry
>
>
>
>
> 2009/8/7 Gerry Patterson  >
>
> Hello,
>
> Instead of using autopano-sift-c, try using 'align_image_stack'. 
> You should then be able to pass the resulting tiff files to enfuse
> directly.  I believe there is an option to generate a .pto which
> you can view as well. 
>
>
> If you want to continue using autopano-sift-c and these images
> were taken in what is meant to be a stacked configuration, you can
> leave off 'b' and 'v' when optimizing. At least I think you can. 
> This should only optimize for position.
>
> Best Regards,
>
> - Gerry
>
>
>
> On Fri, Aug 7, 2009 at 7:22 AM, Doug  > wrote:
>
>
> I'm an inexperienced user of hugin, so any advice is welcome!
> Using 0.8.0 release, attempting a simple fuse of one photo
> (handheld)
> from two images at different exposures.
>
> I used autopano-sift-c to generate control points, opened the
> .pto file
> in hugin, removed sky points with Celeste, optimised y,p,r,b,v and
> stitched using 'Blended panorama(enfuse)'.
> In the resulting xx_fused.tif file the two exposure images are
> grossly
> misaligned vertically and horizontally.
>
> I tried adding numerous control points manually to the images
> before
> fusion - no different - Â and fusing without optimising first
> - the same.
>
> I've had no problem with other simple fusions of two or three
> exposures,
> so what gives? What am I doing wrong?
>
> Doug
>
>
>
>
>
>


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[hugin-ptx] Re: Enfuse unpicks alignment - what's up?

[Harry van der Wolf]

The simplest would be:
"align_image_stack -a AIS "

This would make align_image_stack create aligned images having the prefix
AISx.tif from your (two) source images.
Then do:

"enfuse -o  AIS*"

Or you could use one of the available gui's to do all that for you:
OSX: ImageFuser or enfuseGui or Bracketeer (last one not free)
Linux: KImageFuser
Windows: enfuseGui

Harry




2009/8/7 Gerry Patterson 

> Hello,
>
> Instead of using autopano-sift-c, try using 'align_image_stack'.  You
> should then be able to pass the resulting tiff files to enfuse directly.  I
> believe there is an option to generate a .pto which you can view as well.
>
>
> If you want to continue using autopano-sift-c and these images were taken
> in what is meant to be a stacked configuration, you can leave off 'b' and
> 'v' when optimizing. At least I think you can.  This should only optimize
> for position.
>
> Best Regards,
>
> - Gerry
>
>
>
> On Fri, Aug 7, 2009 at 7:22 AM, Doug  wrote:
>
>>
>> I'm an inexperienced user of hugin, so any advice is welcome!
>> Using 0.8.0 release, attempting a simple fuse of one photo (handheld)
>> from two images at different exposures.
>>
>> I used autopano-sift-c to generate control points, opened the .pto file
>> in hugin, removed sky points with Celeste, optimised y,p,r,b,v and
>> stitched using 'Blended panorama(enfuse)'.
>> In the resulting xx_fused.tif file the two exposure images are grossly
>> misaligned vertically and horizontally.
>>
>> I tried adding numerous control points manually to the images before
>> fusion - no different -  and fusing without optimising first - the same.
>>
>> I've had no problem with other simple fusions of two or three exposures,
>> so what gives? What am I doing wrong?
>>
>> Doug
>>
>>
>>
>
> >
>

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[hugin-ptx] Re: Enfuse unpicks alignment - what's up?

[Gerry Patterson]

Hello,

Instead of using autopano-sift-c, try using 'align_image_stack'.  You should
then be able to pass the resulting tiff files to enfuse directly.  I believe
there is an option to generate a .pto which you can view as well.


If you want to continue using autopano-sift-c and these images were taken in
what is meant to be a stacked configuration, you can leave off 'b' and 'v'
when optimizing. At least I think you can.  This should only optimize for
position.

Best Regards,

- Gerry


On Fri, Aug 7, 2009 at 7:22 AM, Doug  wrote:

>
> I'm an inexperienced user of hugin, so any advice is welcome!
> Using 0.8.0 release, attempting a simple fuse of one photo (handheld)
> from two images at different exposures.
>
> I used autopano-sift-c to generate control points, opened the .pto file
> in hugin, removed sky points with Celeste, optimised y,p,r,b,v and
> stitched using 'Blended panorama(enfuse)'.
> In the resulting xx_fused.tif file the two exposure images are grossly
> misaligned vertically and horizontally.
>
> I tried adding numerous control points manually to the images before
> fusion - no different -  and fusing without optimising first - the same.
>
> I've had no problem with other simple fusions of two or three exposures,
> so what gives? What am I doing wrong?
>
> Doug
>
> >
>

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