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My new Balgen setup

Posted by Stephan Wolfsried  
Re: My new Balgen setup
December 28, 2010 07:41PM
at    
Branko Rieck Wrote:
-------------------------------------------------------
> Hi Harry,
>
> yes I tried it! The "Super Resolution" is no good,
> but the noise reduction looks good to me. One
> problem that I have encountered is that I need to
> have an even more overlapping depth stack, because
> the noise reduction somehow screws up the depth
> stacking if you are not careful. I'll come back to
> you once I have a better feel for the whole
> thing.
>
> Branko

And what about doing the five individual stacks first and then average the results?

Cheers

Harry
avatar Re: My new Balgen setup
December 28, 2010 08:10PM
at    
Harry,

that does not improve the quality, but rather decreases ist. The problem seems to be that the resulting images from depth stacking seem to vary too much in size. Something in the alignment algorithm in Zerene stacker seems to be responsible for a difference of up to 10 px in a 4500 px image stack. And Photoacute Studio does not handle this difference well.

Branko
Re: My new Balgen setup
December 28, 2010 08:42PM
at    
Branko Rieck Wrote:
-------------------------------------------------------
> Harry,
>
> that does not improve the quality, but rather
> decreases ist. The problem seems to be that the
> resulting images from depth stacking seem to vary
> too much in size. Something in the alignment
> algorithm in Zerene stacker seems to be
> responsible for a difference of up to 10 px in a
> 4500 px image stack. And Photoacute Studio does
> not handle this difference well.
>
> Branko


Hm, that is what I feared, namely that the stacks would differ in size. I think that not the alignment itself is the culprit here but rather the resizing that takes place is not absolutely identical. It would be interesting to compare different stacks from the same source images.

Harry
avatar Re: My new Balgen setup
December 28, 2010 09:05PM
at    
Harry,

I checked that, and did 5 seperate runs with the same source images, and they all ended up the same - and I really mean the same: identical MD5 HASH.

Branko
Re: My new Balgen setup
December 29, 2010 03:01AM
Stephan

Bravo!! I am continually in awe of you guys and the technical expertise you demonstrate. Just an amateur myself, who has the budget but no technical capability at all.
I look forward to living vicariously through your photographic contributions.

Cheers
Keven
Re: My new Balgen setup
December 29, 2010 08:25AM


Harald,

the Seligmannite striations are no artefacts. Just have a look on the child photos with different lightings.
I cropped a part out of the 16 Mpixel original.
I use sharpening very (!) carefully, You make no better pictures either with sharpening nor with noise reduction.
The originals of each stack member should be o.k.

Cheers Stephan
Re: My new Balgen setup
December 29, 2010 09:01AM
at    
Stephan, there is a little misconception. I did not mean that the striations are artifacts, but that the striae themselves are jaggy - meaning the individual "lines" show "stair-stepping". I am even tempted to say these are moire artifacts - at least it looks like that in the web version.

Cheers

Harry
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