On Jul 31, 2012, at 5:26 PM, Perian Sully 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 B&W-ness of an
image (ultimately it comes down to measuring the difference between an image
and a grayscale copy of itself).
Are these B&W images (in RGB files) truly neutral? If not, and they are toned
B&W, then you'll need a different approach. Most scans of B&W photography I've
seen would have lost a lot if converted to grayscale?
Hope this helps,
Roger Howard