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Author Topic: Photoshop Fractalius plugin  (Read 11690 times)
Description: Postproces
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quaternion
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« on: November 29, 2009, 10:29:10 AM »

I found excelent plugin Fractalius. Look, this image before:



end this is after Fractalius:



I made other images in Fractal Explorer with Fractalius:





P.S. Sorry, how i can made normal image's size?





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quaternion
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« Reply #1 on: November 29, 2009, 10:32:27 AM »

One image made with help of Lacquer plugin.
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lycium
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« Reply #2 on: November 29, 2009, 11:44:24 AM »

ahh, it's all becoming clear now... it's due to the misnaming of this plugin that (other) people think the images it produces are fractal! there are quite a few mis-categorised images like this on deviantart and elsewhere (a friend happened to show me one just seconds before i saw this thread, weird synchronicity); and one can understand the confusion - the naming for one thing, and aren't all shiny glowy swirly images fractals? </sarcasm>

the technique employed is called line integral convolution, and it sure does look good when applied to fractals (however it will tend to mask the details of self-similarity).
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David Makin
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« Reply #3 on: November 29, 2009, 11:58:29 AM »

I don't see the point of blurring an image hiding the details, even if it's sophisticated blurring smiley
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The meaning and purpose of life is to give life purpose and meaning.

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kram1032
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« Reply #4 on: November 29, 2009, 01:52:01 PM »

so, THAT's how they are created.... Always wondered about those glowing animals on dA lol...
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quaternion
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« Reply #5 on: November 29, 2009, 02:21:20 PM »

thank you.
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quaternion
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« Reply #6 on: September 09, 2010, 01:01:20 AM »

the technique employed is called line integral convolution, and it sure does look good when applied to fractals (however it will tend to mask the details of self-similarity).

I don't see how lic can be employed here.
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lycium
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« Reply #7 on: September 09, 2010, 02:12:07 AM »

the technique employed is called line integral convolution, and it sure does look good when applied to fractals (however it will tend to mask the details of self-similarity).

I don't see how lic can be employed here.

But you are employing it! That's exactly what the "Fractalius" plugin does smiley
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quaternion
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« Reply #8 on: September 09, 2010, 02:43:37 AM »

I see "radial flares" in fft from fractalius. Wat it mean?



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quaternion
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« Reply #9 on: September 09, 2010, 02:57:49 AM »

lycium, I have seen sin, cos, sqrt and exp functions in disassemble. These functions is not needed for lic.
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lycium
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« Reply #10 on: September 09, 2010, 03:06:26 AM »

can you give example?
Your own images above should serve as examples, no?

lycium, I have seen sin, cos, sqrt and exp functions in disassemble. These functions is not needed for lic.
Sure they are: you get the angle along which to perform LIC from the gradient of the luminance, using this you can construct normalised sampling vectors (using sin/cos/sqrt) and do the weighting along those "rays" using a Gaussian falloff function exp(-(k * dist)^2).

It's not absolutely essential to use sin/cos/sqrt/exp, but their use for LIC can easily be explained as above.

Have you implemented LIC before? I can give simple pseudocode, maybe 10-20 lines, that would produce near identical images to what's produced by Fractalius.
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quaternion
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« Reply #11 on: September 09, 2010, 03:14:50 AM »

Quote
Have you implemented LIC before? I can give simple pseudocode, maybe 10-20 lines, that would produce near identical images to what's produced by Fractalius.

yes please.
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lycium
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« Reply #12 on: September 09, 2010, 03:26:05 AM »

I'm at work right now, will post it tonight smiley
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quaternion
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« Reply #13 on: September 09, 2010, 03:31:21 AM »

please.
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quaternion
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« Reply #14 on: September 09, 2010, 11:59:10 PM »

sampled met exp, layered.

do sobel in sobel;
from sincos(sobel; +random(angel)) do line.blur.length.fn(hermite from intensity) in double accumulator; //re gauss rotate and ...
perform expmap in layers:



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