Color analyzing software?

R
Posted By
rkny18
Feb 13, 2004
Views
2007
Replies
6
Status
Closed
Hi all,

Wondering if anyone knows of a PS plugin or standalone app that could batch analyze a database of images, determine the dominate color in the photo and add the dominate color as a metafile keyword. I’ve searched a bit here and there and can’t find much.

TIA

rk
WS
Warren Sarle
Feb 14, 2004
"rkny" wrote in message
Wondering if anyone knows of a PS plugin or standalone app that could batch analyze a database of images, determine the dominate color in the photo and add the dominate color as a metafile keyword. I’ve searched a bit here and there and can’t find much.

What precisely do you mean by dominant color?
R
rkny18
Feb 14, 2004
"Warren Sarle" …
"rkny" wrote in message
Wondering if anyone knows of a PS plugin or standalone app that could batch analyze a database of images, determine the dominate color in the photo and add the dominate color as a metafile keyword. I’ve searched a bit here and there and can’t find much.

What precisely do you mean by dominant color?

Dominant indeed. Dominate? hehe. Actually, I think predominant is the word I really meant to use.

Right…so let’s say I have a photo of a kid wearing a red jacket, holding a red balloon in front of a fire truck. The predominant color would be red. If some software could detect that and assign "red" as a keyword to either a metafile or add red to the file name, then I could search for that photo by color. I’d like this functionality for a stock photo database. Any ideas?

thx

rk
WE
Wino Evertz
Feb 14, 2004
"rkny" schreef in bericht
Hi all,

Wondering if anyone knows of a PS plugin or standalone app that could batch analyze a database of images, determine the dominate color in the photo and add the dominate color as a metafile keyword. I’ve searched a bit here and there and can’t find much.

TIA

rk

DCE-Tools does.
The second Tool is a colour corrector.
It’s shareware.

Wino Evertz
WE
Wino Evertz
Feb 14, 2004
"Wino Evertz" schreef in bericht
"rkny" schreef in bericht
Hi all,

Wondering if anyone knows of a PS plugin or standalone app that could batch analyze a database of images, determine the dominate color in the photo and add the dominate color as a metafile keyword. I’ve searched a bit here and there and can’t find much.

TIA

rk

DCE-Tools does.
The second Tool is a colour corrector.
It’s shareware.

Wino Evertz
You have to make a PS-action, to do a batch job.
Advice: Never trust on automatic corrections for 100%.
DCE tools does a good job. But I think your automatic results (even if complete neutral) are not always the best or better results. I for myself wouldn’t do colour correction without my eyes controlling it.

In PS "autolevels" does the same job (with a worse parameter I think) I Correct professional gives a good white balance. That’s not the same as no-colour cast. But probably more what you have in mind for the results.

So your question isn’t that easy at all to solve.

Wino Evertz
HB
Hugh Bothwell
Feb 14, 2004
Wondering if anyone knows of a PS plugin or standalone app that could batch analyze a database of images, determine the dominate color in the photo and add the dominate color as a metafile keyword. I’ve searched a bit here and there and can’t find much.

I haven’t seen such a thing, but it doesn’t seem too hard.

If you want to reduce to keywords, first you need a list of keywords and the associated RGB values. How many shades do you want to recognize? I would start by sitting down with a bunch of images and categorize them by hand, see
what keywords come to mind, try to use the fewest keywords possible.

Once you have a set of keywords and values, save the
values to a palette. For each image: load it, resize it small and blur, convert to indexed using the saved palette, and count the pixels for each palette entry.

I would categorize by the top two or three colors – say, any color that takes up more than 25% or the image – and
might also consider some sort of hierarchical scheme; if you have 30% mediumblue versus 15% lightred, 15% mediumred, and 15% darkred, is the image more blue or more red?
WS
Warren Sarle
Feb 14, 2004
"Hugh Bothwell" wrote in message
Wondering if anyone knows of a PS plugin or standalone app that could batch analyze a database of images, determine the dominate color in the photo and add the dominate color as a metafile keyword. I’ve searched a bit here and there and can’t find much.

I haven’t seen such a thing, but it doesn’t seem too hard.
If you want to reduce to keywords, first you need a list of keywords and the associated RGB values. How many shades do you want to recognize? I would start by sitting down with a bunch of images and categorize them by hand, see
what keywords come to mind, try to use the fewest keywords possible.

Once you have a set of keywords and values, save the
values to a palette. For each image: load it, resize it small and blur, convert to indexed using the saved palette, and count the pixels for each palette entry.

I would categorize by the top two or three colors – say, any color that takes up more than 25% or the image – and
might also consider some sort of hierarchical scheme; if you have 30% mediumblue versus 15% lightred, 15% mediumred, and 15% darkred, is the image more blue or more red?

Hugh’s advice seems pretty good to me. Once you have come up with some specific rules along the lines of the last paragraph, you could hire someone to write a Photoshop script to do the batch processing.

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