On Jul 31, 2012, at 5:26 PM, Perian Sully perian at emphatic.org wrote:
Hi everyone -
I was wondering if anyone knew of any Adobe Bridge extension or other
third-party software that would allow me to sort by color, and then move a
selection to another directory. Basically, I have a directory of 8600
images, captured in RGB, but about 2/3rds of them are black and white
photographs. I would like to identify and segregate the b/w photographs and
convert them to grayscale. However, they're all mixed in with color
photographs, making selecting them incredibly time-consuming.
I did find this rather neat little software package, ImageSorter, which
does almost everything I want... save being able to select and move the
black and white images. http://pixolution.does-it.net/index.php?id=18
It looks as though Adobe is working on it as a feature in a future release,
but that doesn't help me now.
I don't know of any graphical browsers that offer this, but it's easy to do
using ImageMagick (wrapped in a shell script, for instance). There's a section
in the ImageMagick docs with a few approaches to measuring the BW-ness of an
image (ultimately it comes down to measuring the difference between an image
and a grayscale copy of itself).
Are these BW images (in RGB files) truly neutral? If not, and they are toned
BW, then you'll need a different approach. Most scans of BW photography I've
seen would have lost a lot if converted to grayscale?
Hope this helps,
Roger Howard
