Photo Retouching - - White Balance for JPEG's

manta1900 · #1 07-21-2006, 06:02 AM

I recently "finished"?? a filter to fix White Balance problems of jpeg files. It operates with no controls (no need to search for a grey point or anything else) and I think it does a very good job (IMHO). I need help to test it (alpha test). If you have pics with wrong White Balance and you are willing to help please post them here to fix.

Thanks in advance

P.S. Is it a good idea for a filter? (one step color correction with no skills)? Cause I'm planning to sell it... (not to all that will help of course)

manta1900 · #2 07-21-2006, 09:27 AM

Send me an e-mail (manta1900(a)gmail.com) if you want to be a beta tester (getting an altered version).

Littlecoo · #3 07-21-2006, 08:47 PM

Here's two with dodgy white balance (heh... from a dodgy camera) as is just shot n cropped.

skydog · #4 07-21-2006, 09:37 PM

Here is one...

manta1900 · #5 07-22-2006, 08:55 AM

Nothing else done...

recrisp · #6 07-22-2006, 09:41 AM

Manta,

Here's one that is 'supposed to be' silver colored, but it came out blue.
It's not a shot I did, but a friend makes these bolts, and he took this shot, and wondered if I could make it look better, and I like the idea of a quick fix in helping others like him.
(I don't know how to attach images, so I put it on my site)

http://4dw.net/crisp/21mmtest.jpg

Randy

Littlecoo · #7 07-22-2006, 08:03 PM

Good results Manta

If your filter can acheive simple, consistent and accurate results like this I reckon it would be a great time saver for batch jobs also. Are you just focusing on jpegs or will this algorithm work with other image formats?

Gary · #8 07-23-2006, 12:01 AM

.. on my monitor and using CS2.

manta1900 · #9 07-23-2006, 02:41 PM

Quote:

Originally Posted by recrisp

Manta,

Here's one that is 'supposed to be' silver colored, but it came out blue.
It's not a shot I did, but a friend makes these bolts, and he took this shot, and wondered if I could make it look better, and I like the idea of a quick fix in helping others like him.
(I don't know how to attach images, so I put it on my site)

http://4dw.net/crisp/21mmtest.jpg

Randy

After the filter.... (I hope this is the orig color)

manta1900 · #10 07-23-2006, 02:47 PM

Quote:

Originally Posted by Gary

.. on my monitor and using CS2.

Nice and creative observation gary....
Only skydog can tell us which is closer to reality!!
If it's yours... than I will have to take many new things under consideration.

Thanks for your time

manta1900 · #11 07-23-2006, 02:55 PM

Quote:

Originally Posted by Littlecoo

Good results Manta

If your filter can acheive simple, consistent and accurate results like this I reckon it would be a great time saver for batch jobs also. Are you just focusing on jpegs or will this algorithm work with other image formats?

Thank you Littlecoo for your encouragement.
I hope with your help (who else than you can know color better?) to make it perfect.
It will work with all nkown image types (I made a CMYK version too and it works also).

recrisp · #12 07-23-2006, 06:23 PM

Quote:

Originally Posted by manta1900

After the filter.... (I hope this is the orig color)

Manta,

I think this is pretty good actually, for a 'one hit' thing, it can come in handy, especially for people that do a lot of stuff, and since it's for a .jpeg, not many will want to print masterpieces from it.
In other words, I think that you have something here, although I haven't seen the bolt that was used in real-life, it's close enough that it'd be good for people that are in a hurry, or ones that don't do this much, and it'll work.

I like it fine, and in certain situations it'd save time I think.
You may have a winner here .
I do see room for color-correction of course, and tweaking for contrast etc., but this is a great start in my opinion, you have to start somewhere.

Thanks Manta,

Randy

Cameraken · #13 07-23-2006, 06:31 PM

Hi Manta

Your results seem to be an improvement

Are you using FM (Filtermeister)?

Ken.

skydog · #14 07-23-2006, 06:58 PM

The picture is of my son (www.clayross.com).

Manta...I would say your skin colors looks very good and close to my son's. The pic is rather dark. I like the light of Gary's photo: it is truer to the light (lamps) in the room at the time.

manta1900 · #15 07-24-2006, 03:32 AM

Recrisp,

Thank you for your good words. As for exposure (not brightness) and contrast I have made another filter that you actually don't lose any valuable information of the image in the process.

Cameraken,

Yes cameraken I'm using filtermeister.

skydog,

The filter trys to preserve the original exposure of the picture (substacting the tint color error). I attach the picture with my other filter I mentioned to recrisp that corrects the exposure closer to what the sensor would do (no tweaking to contrast since it preserves it)!