[LRflex] Are your pictures really good? Synthetic testing

Well,
I ran a few synthetic analyses and tests - but I think they blocked off my ISP before I could crack it. 

Starting point

http://gallery.leica-users.org/v/DMS/Perfect-2.jpg.html
Greyscale approximation of the top rated image = rates at around 92% (reduction to amplitude values between +1 and -1) 

http://gallery.leica-users.org/v/DMS/greys_AC.jpg.html

Coherency based approximation  Black White Grey = 98.4 %

http://gallery.leica-users.org/v/DMS/_AAD_Contour2.jpg.html
If anyone else wants to carry on from the last one, please do. I had planned to run the process on the 3 remaining rotations of 90°, 180° and 270° to see if and how the process reacts to orientation, and then analyse the proportions of light, mid and dark tones.
Whatever it does, it is not sensitive to colours - that would make the fast analysis provided much too complex and slow
The last one is a bit of what I remember from my days as an exploration geophysicist, a lot of the software was similar to image processing.
The process I set up determines relative coherencies in the image and contours them according to maxima based on pure black and pure white (+1 and -1, with greys displayed as the values in between, the whole thing was then normalised, smoothed and displayed. Unfortunately I don't have automatic gain control, I suspect the result would have been better if I had. For some, as yet unknown reason, I started getting aliasing effects at the bottom. Frequency-wavelength (FK) filtering could probably remove them, but I don't have the means to run FK-Spectral processing any more.
If I had had the rest of my old software, a couple of tricks might have been able to do the rest.
Inversion of the image reduces the rating considerably, so Doug Herr's assumption with the light and dark elements fundamentally stands up to testing.
To be quite honest, a lot of fun but a complete waste of a Sunday afternoon. :-) 

Cheers
Douglas







Miha Golobic wrote:
Hi Philippe! No filter, just my feather light Nikon D40 with 18-55 shot in JPG fine. The pix went trough trial version of the DxO optics software. But the one I have in Picassa looks the same. It was hot as hell:-) When i turned around I saw this: 
http://gallery.leica-users.org/v/Miha/DSC_2993_DxO.jpg.html
Sunsets are beautifoul too: 
http://gallery.leica-users.org/v/Miha/DSC_2919_DxO.jpg.html
Thanks, 
Miha
2009/5/24 Philippe AMARD <philippe.amard@xxxxxxxx <mailto:philippe.amard@xxxxxxxx>> 

    93 Farenheit or Celsius? ;-)

    In either case I like it, and would certainly have enjoyed a
    plunge this afternoon there.
    Did you use a polarizing filter?

    Bien amicalement
    Philippe



    Miha Golobic wrote:

    This on gets 93:
http://gallery.leica-users.org/v/Miha/DSC_2982_DxO.jpg.html I found it rather boring. Landscape is not my thing :-( Miha
2009/5/24 AMARD philippe <philippe.amard@xxxxxxxx 
    <mailto:philippe.amard@xxxxxxxx>>

        To the initial queston in the header, the anwser here is no :
http://gallery.lfi-online.com/gallery/displayimage.php?album=search&cat=0&pos=37 
        
<http://gallery.lfi-online.com/gallery/displayimage.php?album=search&cat=0&pos=37>
is rated 12 /100 and that one get 83.8 http://gallery.leica-users.org/v/Phileica/PAW-2009/2009-PAW-10-Steve+s+edit.jpg.html why ? I also tried with colour shots, very funny results, 
        fuzzillogics get more points than my most visited pix on
        the LUG ...
Nice to start the week with questions about photographs Phx 
        On Sat, 23 May 2009 15:28:31 -0700 (GMT-07:00)
        Doug Herr wrote:
        > Douglas Sharp wrote:
        >
        >>
        >>http://acquine.alipr.com/index.php
        >>
        >>this was posted on the LUG by one of the newest members,
        >>Ming (I think).
        >>
        >>
        >>Find out for yourselves how good you really are - it's
        >>quite surprising,
        >>and completely off track - it already relegated our own
        >>established
        >>master of bird photography Doug Herr to below amateur
        >>status. Henri
        >>Cartier Bresson and Dorothea Lange didn't rate too well
        >>either :-)
        >>
        >>I managed to score 89.3 with this one, but everything
        >>else I tried was
        >>apparently utter rubbish
        >>
        >>http://gallery.leica-users.org/v/DMS/Sunglasses.jpg.html
        >> - Not far
        >>behind Dorothea Lange's Migrant Mother :-)
        >>
        >
        > One feature it seems to like is a bright center and
        >darker edges, also the rule of thirds. These two both
        >scored quite well, apparently because they follow the
        >classical rules of composition:
        >
        > http://www.wildlightphoto.com/land/sublog.jpg
        > http://www.wildlightphoto.com/land/denali.jpg
        >
        > and this rated only 30.8 (out of 100):
        >
        > http://wildlightphoto.com/birds/accipitridae/rsha01.html
        >
        >
        > Doug Herr
        > Birdman of Sacramento
        > http://www.wildlightphoto.com <http://www.wildlightphoto.com/>
        >
        >
        > ------
        > Unsubscribe or change to/from Digest Mode at:
        > http://www.lrflex.furnfeather.net/
        > Archives are at:
        > http://www.freelists.org/archives/leicareflex/

        ------ Unsubscribe or change to/from Digest Mode at:
        http://www.lrflex.furnfeather.net/ Archives are at:
http://www.freelists.org/archives/leicareflex/ 




begin:vcard
fn:Douglas M. Sharp
n:Sharp;Douglas M.
org:30629 Hannover, Germany;Annette-Kolb-Strasse 29
email;internet:Douglas.Sharp@xxxxxx
title:G2E Translations
tel;work:0049 0511 9585565
version:2.1
end:vcard

Other related posts: