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Photoshop Contest Forum Index - General Discussion - CSI is REAL! SHOCK! - Reply to topic

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TofuTheGreat

Location: Back where I belong.

Post Sat Mar 06, 2010 10:45 pm   Reply with quote         


I just read this article.

Looks like all that stuff on TV about taking a grainy/pixelated image and bringing out the actual image is based on reality after all. Shocked

Please discuss.




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”The mind is like a parachute, it doesn’t work if it isn’t open.” - Frank Zappa
Created using photoshop and absolutely no talent. - reyrey

seelcraft

Location: High Bridge, New Jersey

Post Sat Mar 06, 2010 11:10 pm   Reply with quote         


Wow. I wonder if that is related to the odd effect that our brain sees better resolution in a blurred image if we sprinkle a little noise on it.




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Oscar

Location: Northern California

Post Sun Mar 07, 2010 1:18 am   Reply with quote         






Martrex

Location: California

Post Sun Mar 07, 2010 1:50 am   Reply with quote         


Oscar has far too much time on his hands. I wonder what else he works on in his spare time??? Laughing Laughing Laughing Laughing




Oscar

Location: Northern California

Post Sun Mar 07, 2010 2:48 am   Reply with quote         


Martrex wrote:
Oscar has far too much time on his hands. I wonder what else he works on in his spare time??? Laughing Laughing Laughing Laughing


I reply to threads like this Laughing




nevet

Location: Israel>Vancouver

Post Sun Mar 07, 2010 3:05 am   Reply with quote         


Laughing Laughing




glennhanna

Location: Eugene, Oregon

Post Sun Mar 07, 2010 4:54 am   Reply with quote         


http://www.di.ens.fr/~mairal/resources/pdf/ICIP0907.pdf

This has some examples. So taking grain out of an image is great. But it's not exactly making something hi res. A blurry low res image with grain is still going to look like a blurry image, but with no grain. It's still impressive. I'd like to see a sparse filter for photoshop for when I'm scanning images. Dust removal is okay, but tends to blur the image.




Michel

Location: Montreal, Canada

Post Sun Mar 07, 2010 9:59 am   Reply with quote         




It's like those before/after images; you can see that they inverted the order, the person really just got fatter. They just added noise to the picture.




ReyRey

Location: In a world of $#!t

Post Sun Mar 07, 2010 11:39 am   Reply with quote         


Yes, that shows me nothing. They took a picture with a lot of noise and removed it. I want to see the picture that start as three blobs of color and they fix it so you can see what color the guys eyes are. Laughing




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Alex

Location: Montreal

Post Sun Mar 07, 2010 11:59 am   Reply with quote         


It's all REAL folks! See by yourself... A single pixel can hold bunch of information.
Check the video.

http://ae.tutsplus.com/tutorials/ae-plus/enhance-your-images-with-holos-ae-plus/

BTW, this is some serious bullcrap.
Cool




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dunno

Location: here

Post Sun Mar 07, 2010 2:04 pm   Reply with quote         


The software/algorithms which Tofu found, are pretty real and will most likely do a great job. However, you need to read carefully - it will not do the CSI trick.

The magic word here is SCALING, which does NOT happen with that software.
The software does something in the field of "compression and data reconstruction", like what we all use as mp3 for audio data.
It is perfectly possible to calculate noise away and to reproduce "sharp" data out of fragments.
The fragments, however, is the important thing. They need to be "sharp" (from a sharp source, that is). If you have fragments from noise, the software will generate noise, no sharp data.

In my example below you will maybe see the point. The data of 16 pixels can generate completely different results - it depends solely on what you start with.





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rett435

Location: Tennessee

Post Sun Mar 07, 2010 7:27 pm   Reply with quote         


http://www.youtube.com/watch#!v=KUFkb0d1kbU&feature=related

Why won't this link properly? I've tried putting it in the "url" brackets, no go. <a href>... no go. Pasting the entire url........no go!!!

I am befuddled Evil or Very Mad




Tesore

Location: On the way to Utopia!

Post Sun Mar 07, 2010 8:13 pm   Reply with quote         






rett435

Location: Tennessee

Post Sun Mar 07, 2010 9:00 pm   Reply with quote         


Thanks Tesore!

I think I know what the problem was, now.




TofuTheGreat

Location: Back where I belong.

Post Sun Mar 07, 2010 9:53 pm   Reply with quote         


rett435 wrote:
http://www.youtube.com/watch#!v=KUFkb0d1kbU


BWAHAHAHAHAHAHA! "Find water droplet" Laughing




_________________
Why I do believe it's pants-less o'clock! - Lar deSouza
”The mind is like a parachute, it doesn’t work if it isn’t open.” - Frank Zappa
Created using photoshop and absolutely no talent. - reyrey

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