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How do you fix a material

Posted: Mon Apr 21, 2008 9:01 pm
by frosty_ramen
i just wanted to know what anyone would suggest to edit a color/texture map that has an area on the image that is brighter than the opposite side.

Image

Posted: Mon Apr 21, 2008 9:32 pm
by glebe digital
Something like this?

Image

In Photoshop duplicate the layer, then 'flip' it 180 degrees and change the upper layer to 50% opacity..........won't work for every type of image, but for the example given I think it's the quickest. :)

Posted: Mon Apr 21, 2008 10:14 pm
by Bubbaloo
Wow, that ones tough. You also have some reflected color on the left in addition to the strong highlights on the right. I would desaturate it, work with that, and then re-color it afterwords.

Posted: Mon Apr 21, 2008 10:21 pm
by Bubbaloo
Here's my try:
Image
I desaturated, did a high pass filter, copied and mirrored a layer, set both layers to multiply, and re-colored.

Posted: Tue Apr 22, 2008 4:22 am
by simmsimaging
Run the Hi-pass filter at a very high pixel radius, and then fade it to luminosity mode. You may need to putz with curves to rebalance colour etc, but that will do it.

A more complex solution that has a few more options is to:

1) dupe the image
2) convert to LAB colour
3) dupe the L channel to another new file and convert it to greyscale.
4) dupe the background layer (was the L channel) in the same document, invert and set to overlay mode.
5) Gaussian blur that. Play with the amount and with the overall opacity of the layer. Larger blur values will probably be needed (like 50+pixels).
6) when it looks pretty even that image back into the L-channel of the LAB file, then reconvert to RGB.
7) Dupe that fixed image back on top of your original and set the mode to Luminosity. May need a few tweaks there too.

EDIT- forgot to mention: sometimes you need to repeat steps 4-5 more than once. Just blur the overlay layer and if you still see some gradation in light merge it down, dupe that layer, invert and set to overlay, and then do it again. I rarely need to do it more than twice.

b

Posted: Tue Apr 22, 2008 5:21 am
by sandykoufax
If you use Crazybump, the diffuse map makes the similar result.

but you have to use clone stamp tool for a offset filter.

Posted: Tue Apr 22, 2008 1:12 pm
by frosty_ramen
Thanks all for the quick responce


-dan