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 Post subject: PhotoMaster's Harris Effect Tutorial
PostPosted: Thu Sep 02, 2010 4:42 pm  (#1) 
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A little bit of art history? Maybe?

Note: The one with the patio torch, was hand held and the layers were aligned prior to composing. The image was cropped afterwards. The rest were all done with a tripod.


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Harris Effect.JPG
Harris Effect.JPG [ 1.15 MiB | Viewed 7007 times ]

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Thu Sep 02, 2010 4:55 pm  (#2) 
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Those are incredible. I am really liking that waterfall one.


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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Thu Sep 02, 2010 10:10 pm  (#3) 
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cool! ok, how do you replace the layers with the other layers? Do you copy visible and paste as layer? will it work if you use photo one, and a render taken from this same photo as photo 2 and 3? (maybe move them slightly to show the diff colors)


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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Sat Sep 04, 2010 9:22 am  (#4) 
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Those are amazing. I love the water droplets. =)

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Sat Sep 04, 2010 9:04 pm  (#5) 
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2-ton wrote:
ok, how do you replace the layers with the other layers?

I delete a layer from the first image and then drag a layer from another image and drop it on the new image.

2-ton wrote:
will it work if you use photo one, and a render taken from this same photo as photo 2 and 3? (maybe move them slightly to show the diff colors)

I have taken a single image, decomposed it and dragged each layer slightly, then composed it again. You can get an interesting result in some cases.

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Sun Sep 05, 2010 4:12 pm  (#6) 
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The results of the two different processes are often similar, but are often quite different as well. Here I created a simple image by brushing a plain white background with a fancy green brush. If I decomposed it, moved the layers and recomposed it, it didn't look like I did anything! So instead, I desaturated it first, decomposed it, moved the layers and then re-composed it. Much, much different! I also increased the color saturation a little bit.
Attachment:
Decompose Experiment Before.jpg
Decompose Experiment Before.jpg [ 187.53 KiB | Viewed 6929 times ]

The above picture is before (obviously) and the bottom is the after.


Attachments:
After.jpg
After.jpg [ 217.84 KiB | Viewed 6929 times ]

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Sun Sep 05, 2010 4:26 pm  (#7) 
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Here is another set of before and afters, without desaturating.
Attachment:
New Test.jpg
New Test.jpg [ 165.48 KiB | Viewed 6929 times ]

Before above and after below.


Attachments:
rgb-compose.jpg
rgb-compose.jpg [ 199.6 KiB | Viewed 6929 times ]

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Sun Sep 05, 2010 7:55 pm  (#8) 
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I don't seem to have your luck at doing these. I open an image, desaturate it, decompose it, move the layers, recompose and end up with the desaturated image.

I tried one with a gradient, desaturated it, moved the first and second layers and flipped the top layer Hz. :lol Came out plaid.

Duplicated the original image and the results and set the results to Value for a third style.

Image

Different gradient. Colors come out the same.

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Sun Sep 05, 2010 8:34 pm  (#9) 
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Gradients are different, because they are patterns and don't really have a part that is stationary and a part that is moving. Here I whipped up a demo image. I shot 3 pix (ugly pix) with my web cam. The sofa and back cushion are stationary so the color stayed the same. My head is in 3 different positions, which is why the colors are different. Part of my neck is normal colored, since my neck was in the same spot in all 3 images. I would have used some better images, but I am exhausted after driving my daughter to college in Rhode Island.


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Full-HarrisDemo.jpg
Full-HarrisDemo.jpg [ 339.54 KiB | Viewed 6921 times ]

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Sun Sep 05, 2010 8:41 pm  (#10) 
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Ah, I think I understand better. I don't have the ability to make 3 different images like that so will have to rely on stuff I can do.

Wonder if using iWarp on an image to move the focal stuff around a little might work.

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Sun Sep 05, 2010 11:43 pm  (#11) 
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I used iWarp on this candle flame.

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Mon Sep 06, 2010 12:53 am  (#12) 
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This one came out kind of interesting. I used iWarp on two of the layers. Original image here.

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This is coffee in a glass cup iWarped after desaturating and decomposing.

Image

This is entirely too much fun to play with. Original image here.

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Mon Sep 06, 2010 2:46 pm  (#13) 
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Awesome...the i-warp lets you use the same image for all layers!


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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Mon Sep 06, 2010 4:22 pm  (#14) 
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I did not think of iwarp, and you nailed it!! These images are sheer perfection! Something for me to play some more with!! Simply brilliant!

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Mon Sep 06, 2010 4:48 pm  (#15) 
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That's what's fun about gimp. You never know what you will end up with when playing with something new. :gimp

I took the liberty of cropping your picture out of your webcam one.

This one I used iWarp and also changed the layer positions in the decomposed images.

Image

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Mon Sep 06, 2010 6:51 pm  (#16) 
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Oooh! Very colorful personality!

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Mon Sep 06, 2010 6:55 pm  (#17) 
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*grin* Yes. Sneaky photo thievery, too. Image

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Mon Sep 06, 2010 9:19 pm  (#18) 
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sigh, I still can't do it. I am lost with what layers are where, and what I'm deleting, what I'm moving to where. Argh.


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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Mon Sep 06, 2010 11:06 pm  (#19) 
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@ 2-ton

Well here's something fairly simple to start with.

Open a new image large enough to type your name in and fill the layer with white.

Use black for the fg color. Type your name and center it. Merge it down to the white layer.

Colors > Components > Decompose.

You will have an image with 3 layers, named red, green, and blue.

Select the blue layer.

Filters > Distorts > iWarp.

In that dialog, leave the Deform mode Move, and change the deform radius to about 50.

Move on the blue layer to the right, moving the text and trying not to make it unreadable. It doesn't take a lot of moving to move it all to the right a bit. Click OK.

Select the green layer.

Go back to iWarp and move the text to the leftt a bit. Don't be too perfect about it. Click OK.

Select the red layer. You can leave it alone or go into iWarp and move it kind of around a bit. In the one I posted below I just pulled up on the text in several places.

After you've treated each layer, click Colors > Components > Combine. You should now have a colorful image of your name.

This will give you a basis to do other images and experimenting in the iWarp dialog.

Here are the layers after the text has been decomposed. The original text layer is not in the decomposed layer but I wanted you to be able to see the difference.

Image

Here is your name after I went to Colors > Components > Combine. After I did that I clicked Colors > Color to Alpha with white in the color, and removed the white background.

Image

Hopefully this will give you ideas to try on other images.

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 Post subject: Re: PhotoMaster's Harris Effect Tutorial
PostPosted: Tue Sep 07, 2010 2:59 am  (#20) 
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Nice!!! It's amazing all the variations we can make!

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