[fwlug] Last night's notes

[Rob Ludwick]

Okay, so for all those that did attend, and for those that didn't these
are a bunch of notes I'm putting together as I wait for the sky to clear
to try to take some star trail pictures tonight.

I had fun last night.  Hope you all did too. 

--R

=======================================================================


For those that want to see the things I've done, look here:

http://www.capturing-photons.blogspot.com/
http://picasaweb.google.com/rcludw


Hugin

Great program used as a base for other programs.  It can be bit
cumbersome to use though, but it can produce great results, fairly
easily, as was demonstrated last night.

http://hugin.sourceforge.net/

If you've not seen the flickriver, you might be mesmerized for an hour,
like I was during Christmas at my parents house.  Just keep scrolling
down.

http://www.flickriver.com/photos/tags/hugin/interesting/

Hugin also has a large number of tutorials:

http://hugin.sourceforge.net/tutorials/index.shtml

Also if you're going to spend hours of time looking at panoramas anyway,
it's probably worth some time to look at the gigapan images.

http://www.gigapan.org




LuminanceHDR (formerly qtpfsgui) for High Dynamic Range pictures

For Ubuntu this was provided by the getdeb repositories.  Getdeb is/was
down, but it will probably make it's way into Ubuntu soon enough.

http://qtpfsgui.sourceforge.net/

This is a fairly nice package that will do the fattal tonemapping as
good as photoshop will, something to keep in mind.

So to understand exposure bracketing, there's a good wikipedia entry on
it.

http://en.wikipedia.org/wiki/Bracketing

For most HDR pictures 3 pictures, each 1 EV apart is good.  For the
sunset picture I did intervals of 2EV.  

Alternatively I could have done 5 pictures in 1EV increments from the
range of -2.0 EV to 2.0 EV would have worked swell too.  Most cameras
can do the EV, but not all of them will do the automatic bracketing.




Focus Stacking:

This is the tutorial I pretty much followed, except I started
with .JPG's and not .TIF's.  This requires Hugin.

http://photoblog.edu-perez.com/2009/01/greater-depth-field-macro.html

For those that don't want to read:
align_image_stack -m -a AIS_ *.JPG  #JPG may need to be jpg instead.
enfuse -o result.tif --wExposure=0 --wSaturation=0 --wContrast=1 \
--HardMask AIS_????.tif



Color Profiling:

http://www.argyllcms.com/

You may need to compile this one by hand in order for it to properly
work.  There's a list of equipment that Argyll will work with if you're
looking to buy something ( or just bring your display to me with a cold
beer or two, and I'll profile it for you).

Also for many printers, cameras and scanners, it's possible to get a
color profile (.icc file) for the device.  UFRaw makes many profiles
available for different cameras.  

Also the x-rite color checker passport is useful not only for color
checking, but for instant tweaking of white-balance and exposure.

http://www.amazon.com/X-Rite-MSCCPP-ColorChecker-Passport/dp/B002NU5UW8

The colorimeter I have is a colormunki create: 

http://www.colormunki.com/product/show?product=create

.icc profiles are supported by gnome, gimp, UFRaw and many other
graphics programs.



EyeFI for Linux:

The trick is to install the EyeFi and use it under windows first.  Then
you can get the upload key.

Once you have the upload key you can use this:

http://returnbooleantrue.blogspot.com/2009/04/eye-fi-standalone-server-version-20.html
http://github.com/tachang/EyeFiServer

(Look in the Release 2.0 directory)

Put the upload key in the configuration file in the right spot, then run
the server with the -c option pointing to your config file.

To add a new wi-fi network, use this:
http://dave-hansen.blogspot.com/2009/02/new-release-008.html

There exists an android app called "Wi-Fi Droid" that does the same
thing as the server above.


Picture Frames:

This is the part I didn't get to last night.  I wrote a python script
(addpic.py) to easily convert images to a 1024x768 frame.  This script
chooses the height or width of the image and resizes it down, keeping
the aspect correct, allowing the use to save space on a 2gig card since
the display won't even do 1MP yet alone 12MP.  

I can go through my images drag them into the terminal where the script
is running, hit return, and the images will pop into the card at a lower
resolution.



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