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Photo Retouching "Improving" photos, post-production, correction, etc.

distressing type to look like old wood

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  #11  
Old 07-14-2006, 07:10 PM
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Cameraken Cameraken is offline
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Hi Artmaker.

Well Done Jen.
That is great. I’m glad you got it sorted.

The displace filter has a lot of uses (even for things like brush strokes)
If you would like to learn more then one of the best tutorials is here

http://www.thegoldenmean.com/technique/displace1.html

It is heavy going but well worth it

I forgot to mention that the displace map should be a B&W PSD (Thanks Craig) and also have a slight Gaussian blur applied.
The Red Channel Controls Left – Right
The Green Channel Controls Up – Down
The Blue Channel is not used

Well Done Again

Ken.
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  #12  
Old 07-15-2006, 09:40 AM
artmaker artmaker is offline
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Talking

Hi again,
WOW that tutorial is great! Thanks! I have that site bookmarked now too.
Read throught the whole thing.

I did the sample above with only the red channel and I think it's too harsh. For one thing, this will go on a Tshirt pocket so it's not a very big image. The bottom line of type (not shown) is almost not readable.
So it has more tweaking to do.

But hey, I know what that displacement thing is all about now. VERY cool indeed! I'll probably redo this image a dozen or so times. By then I'll have this down boy!

Thanks again.
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  #13  
Old 07-15-2006, 12:37 PM
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Cameraken Cameraken is offline
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Hi Jen.

You are welcome.

One last link for you, seeing you enjoyed TheGoldenMean.

http://tech-slop.serveit.org/tob.shtml

I bet you don’t read that lot in a day


Ken.
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  #14  
Old 07-16-2006, 11:36 AM
artmaker artmaker is offline
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COOL! Another one to add to my bookmarks.

I actually teach a biggining photoshop class at my local college once a year. I'll pass these sites along.

Thanks again.
Jen
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  #15  
Old 07-18-2006, 11:07 AM
artmaker artmaker is offline
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Another question

Say, hope your still watching this.

Reading one of your tutorials, it mentions using TWO channels. red and green. I know how to make a map out of ONE channel but it doesnt go into making one with two.
Here;
http://www.thegoldenmean.com/technique/displace2.html

I'll go play around now. Going to try and make two seperate maps, one from each channel and see what I can do with that. But if you know a way to make an image map using both channels at once, could you please post that?

Thanks again.
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  #16  
Old 07-18-2006, 01:23 PM
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Cameraken Cameraken is offline
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Hi Jen.

Yes, You are correct. You can make single channel and dual channel Displacement maps.

Single Channel.
White results in negative movement both vertically and horizontally; black results in positive displacement both vertically and horizontally. Thus a single channel DMap gives mostly diagonal movement

Dual Channel
The Red channel Controls Horizontal Displacement. White is Left and Black is Right
The Green channel Controls Vertical Displacement. White is Up and Black is Down

A Single Channel Dmap does not really exist. It is just that the red and green channels contain the same (I think- Please check this)
Any other channels (ie blue) are ignored.

So you can see that by having different info in the red and green channels you can control the horizontal and vertical distortion separately

Jen. I suggest reading this. Stroker explains all this far better than I can
http://tech-slop.serveit.org/b2channels/index.shtml
And
http://tech-slop.serveit.org/tob.shtml

Reading ALL of Stroker’s stuff is well worth it, and, best of all Stroker is a member here at Retouch Pro.
Here is one of his posts.(not on displace)
http://www.retouchpro.com/forums/software/12807-filtermeister-color-theory-conversions.html

I have been re-reading a lot of this displace stuff myself recently because it is also very relevant to FilterForge
http://www.retouchpro.com/forums/software/13643-filter-forge.html

The red and green channel displacements are the same as the horizontal and vertical offset in FilterForge

Quote:
But if you know a way to make an image map using both channels at once
Here are Three ways to make a displace map
http://tech-slop.serveit.org/tweakables/index.shtml
http://tech-slop.serveit.org/reflections/index2.shtml
http://tech-slop.serveit.org/reflections/index3.shtml

But I don’t think this is what you want. I think you are asking if there is a way to make a two channel Dmap from an image. If that’s the case then I think the answer is No because there is no 3D info in a 2D image. If anyone knows I way to do this then I would be very interested to hear it.

Hope this helps.

Ken.
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