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Any hope for this Moiré?

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  #11  
Old 10-11-2006, 03:56 PM
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PixelHawk PixelHawk is offline
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Re: Any hope for this Moiré?

Quote:
Originally Posted by Jerryb
Now the following procedure not sure if you have seen....... but I can see it working for certain kinds of moire pattern... which you can maybe put in your ref list... it specifically for photoshop in mind....
http://members.fortunecity.com/dleon...tips/moire.htm
Hey, thanks for posting the link to that technique! I just had to utilize it for a scan, and it worked a lot better than the method I usually use.
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  #12  
Old 10-11-2006, 05:32 PM
Jerryb Jerryb is offline
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Re: Any hope for this Moiré?

hi keri,
thank you and your welcome..... I am glad to be able to contribute... I am real new to the boards...... and I am a cream puff compared to you and the other people how knowledable you are in using PS and the expertise you have... I just hope and can get at least a 1/3 as good as all of you are and contribut more...

Quote:
Originally Posted by PixelHawk
Wow! Some fabulous responses from all of you! Thank you! I can see that once again, there are multiple ways of achieving the same goal in Photoshop, and I plan on using each of these when the need arises.

Flora, thank you for the welcome... this is a fantastic forum! And yes, if you would be so kind... I'd really appreciate the tweaks you used on the image.

Funny how just as you start to think you're getting pretty good at something, you get humbled by a thing as simple as this.
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  #13  
Old 10-11-2006, 09:31 PM
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Daviskw Daviskw is offline
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Re: Any hope for this Moiré?

Hi there

Here I thought I was going to have the answer... degrunge.... only to finally read the posts and see Flora had used it.... well I already had this to go so i will post it. I managed to get the picture much smaller without moiré...

Funny if I view this picture in XP file manager the moiré does not show on my computer at any resolution... but in Photoshop it does... go figure.

Butch
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File Type: jpg white1.jpg (97.7 KB, 88 views)
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  #14  
Old 10-11-2006, 09:34 PM
pepperspray pepperspray is offline
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Re: Any hope for this Moiré?

I can't believe how you guys have worked that image!


Edit: Ok, never mind about the what causes it question, I found the answer right here at RetouchPro!
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  #15  
Old 10-12-2006, 05:00 AM
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Gary Richardson Gary Richardson is offline
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Re: Any hope for this Moiré?

Been playing with Ro's technique (thanks Fora for reminding me of it), and struggling mightily.

Then as Doug reminds us, I got a A-Ha moment and switched to view at 100%, and the technique which hadn't upto that point seemed to work, worked as it should.

Below is my attempt, nowhere near as good as some of the others, but for a first attempt with a new technique I'm reasonably happy (now to go away and practice with it).

For any Numptys like me who had trouble with this, this is my step by step guide. (I've just re-written Ro's excellent work slightly, by adding a little on how I got the radii for HP and GB).
  • Set View to Actual pixels (100%).
  • Copy image to new layer.
All the following are applied to the new layer.
  • Desaturate layer (or you get color bleed in your final image).
  • Apply High Pass filter, and adjust radius till you get MAX moire showing.
  • Invert.
  • Set layer blend to Linear Light, and set layer opacity to 50%.
  • Apply Gaussian Blur, and adjust radius till Moire isn't seen and checks in sofa are.
  • Apply layer mask and mask out all areas that didn't have Moire to begin with.
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File Type: jpg 1012865f5e-copy.jpg (98.5 KB, 95 views)

Last edited by Gary Richardson; 10-12-2006 at 07:37 AM. Reason: Wrong pic.
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  #16  
Old 10-12-2006, 12:38 PM
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lkroll lkroll is offline
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All I have to say is...

...Ro's a genius. Thanks Flora for the link. I've seen other posts that struggle with this and this one definitely beats out the lab color technique.
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  #17  
Old 10-12-2006, 01:07 PM
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PixelHawk PixelHawk is offline
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Re: Any hope for this Moiré?

Ro's technique definitely got it to look a TON better than it did! After several different attempts, I went with the way that Gary outlined. Here's the final result. Not 'perfect'... but a vast improvement. Just hope it still looks good when it prints.

Thanks again for everybody's help!
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File Type: jpg moire_reduction.jpg (96.5 KB, 66 views)
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  #18  
Old 10-12-2006, 01:53 PM
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Flora Flora is offline
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Re: Any hope for this Moiré?

Hi,

... so glad I could help with the link!!

Quote:
Originally Posted by lkroll
...Ro's a genius.
... So true!!!

Might be late already, but here is how I used and adapted Rô's technique for this image....

Following Rô's instructions exactly:
  • Duplicated the Background.
  • Run Filter>Other High Pass on the duplicate.
  • Changed the High Pass Layer's Blending to Linear Light
  • Run Gaussian Blur on the Linear Light Layer...
.... here are the exact values I used for the 'full size' image:
  • High Pass Filter = (Attachment 1)
  • Gaussian Blur = (Attachment 2)
  • Left the Linear Light Layer's Opacity at 100%..
My Mask = (Attachment 3)

Hope this still helps...
Attached Images
File Type: jpg SNAP-206.jpg (39.7 KB, 82 views)
File Type: jpg SNAP-207.jpg (28.5 KB, 84 views)
File Type: jpg SNAP-208.jpg (44.6 KB, 60 views)
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  #19  
Old 10-12-2006, 06:25 PM
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Gary Richardson Gary Richardson is offline
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Re: Any hope for this Moiré?

Quote:
...Ro's a genius.
Not gonna get any arguments from me.

Thanks Flora for sharing, interesting that your settings are significantly different to the ones I used, 8 for HP and 2 for GB if I remember correctly, (I'll have to try out varying Linear Light opacity and see how it effects things).
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  #20  
Old 10-12-2006, 06:48 PM
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mistermonday mistermonday is offline
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Re: Any hope for this Moiré?

I found that HP=6 and GB = 1 worked very well for me with the Opacity at 50%. Clearly the process has a fair amount of lattitude. I also found that a small amount of unsharp mask or smart sharpen really made the final image pop and seemed to completely mitigate the softening caused by the HP-GB process ... and of course the moire pattern had disappeared.
Regards, Murray
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