gimp-perl Post-processing


(Hos) #1

This might be a bit off topic,
but I have been having fun making
some post-processing scripts for
my animations with gimp-perl.

Here is the script:
http://www.ualberta.ca/~cwant/gimp/rendertrick/rendertrick.pl

It has 2 different effects: “Render Trick”
and “Old & Grainy”. The “Render Trick”
effect is inspired by the effect found on
this page:
http://www.lwhub.com/rendertrick/index.html

Here is my script’s output using the same
input picture:
http://www.ualberta.ca/~cwant/gimp/rendertrick/robot.jpg

Here is a picture I created with the 2
different effects applied to it:

The script is meant to be run in batch on
animation frames: here is a processed
animation (each file is about 1.5 MB):

gimp-perl is a fun and inexpensive way to
write scripts for batch processing
frames. To find out more, check out the
gimp-perl FAQ:

http://www.gimp.org/~sjburges/perl/gimp-perl-faq.html

Chris


(SatoriGFX) #2

Not off topic at all. Post processing is often an essential element to creating the right end result. I am actually surprised that more people don’t post process their images more often.

I have spent quite a bit of time working on CanvasFX filters to age photos, apply simulated focal blur etc… Lots of fun.

SatoriGFX.


(Timothy) #3

Really cool dude,

anymore where that came from?


(Hos) #4

On 2002-03-24 22:11, Kib_Tph wrote:
Really cool dude,

anymore where that came from?

Hopefully, I’ll have some time to
write some more scripts this week
(I would like to write some scene
transitions).

Chris


(malefico) #5

Nice, clever and useful. What else ?
Wonderful.

malefico.

(Remember: “Hos is always right !”)


(SKPjason) #6

Thanks for showing us the cool combo of effects. Quite an impressive display of creating “style” in CG art.

Hos is Da Man as always… not that we expect any less… :wink:

Jason


(Hos) #7

Shucks, such kind words … blush

Anyhoo, I tweaked the script and now it
does a “film noir” style and a “Wizard of
Oz” colorization style:

http://www.ualberta.ca/~cwant/gimp/filmnoir/filmnoir.pl

Here are some new pics and movies:
http://www.ualberta.ca/~cwant/gimp/filmnoir/alienNoir.jpg
http://www.ualberta.ca/~cwant/gimp/filmnoir/alienWiz.jpg
http://www.ualberta.ca/~cwant/gimp/filmnoir/alienFilmNoir.mpg
http://www.ualberta.ca/~cwant/gimp/filmnoir/alienWizColor.mpg

Chris


(SKPjason) #8

Just when I thought I had seen the coolest stuff tonight… wow…

I love the film noir… it perfectly captures the black “blacks” and the misty grays and the crisp whites.

Cool man


(Hos) #9

I love the film noir… it perfectly captures the black “blacks” and the misty grays and the crisp whites.

Cheers! I have to give GSR credit for that
– he pointed out that noisyness in the
blacks and whites in the first attempt
looked more like crappy, staticy TV than
film. He also recommended the “Overlay”
layer that is used to correct this.
I think that if I can make the noisiness
a bit more “uniform” accross the frames
it’ll be almost perfect when animated.

Regards,
Chris


(eeshlo) #10

Me like very much, I like noise in everything…
Nice work Chris!