infrared filter for photoshop?

kryptic

Gawd
Joined
Oct 7, 2002
Messages
548
is there an infrared filter for photoshop? It is my only alternative to an infrared lense for my camera which i cant afford :(
 
I keep reading that post and thinking Night Vision. I know enough about photography to know that you wouldn't be able to achieve a proper night vision look in photoshop unless you took the image during the day and applied some filters. You can't change an image that isn't properly recorded so I guess the same goes for infrared. You can try adjusting the levels so that you get a bunch of different solid levels between black and white, and then just selecting those areas and adding the proper colours.

I did that in about 10 seconds on Photoshop. Not the prettiest thing in the world. I think you'd need to select the 'hot' and 'cold' objects separatly in order to make this work, and then apply the appropriate colour changes to each.
infrared.jpg
 
use stroke or expand/contract selection... should be a bit easier.

but im sure a filter exists somewhere as it is just like embossing, only instead of silver it is white/yellow/red
 
I don't know of a filter to apply in Photoshop, but you can probably achieve something like that easily enough without one.

The blacks are very rich in that image, and the whites are overly hot. Sort of an odd combination so you could adjust the levels slightly of your image to do that. THen i'd just either adjust the variations and add some blue+cyan, or just pick a blue colour and then fill another layer with that colour and mess around with the layer properties. Colour Dodge and Colour seemed to work the best. And as a last resort, try e-mailing the guy that took the picture and see if he knows of a way to get that effect in Photoshop.
 
There is no filter, and there never will be one, although you could
probably jippo the effect using levels.

Why do I say this?

You have to understand the photographic proccess. A camera is
a glorified light-meter, it basically differs from a light meter in that
it does not take a single sample but a two-dimensional plane of
samples of varying resolution (depending on the camera and
film/CCD), molecular resolution in the case of film cameras.

So if you see green in a photograph it is because the film (or CCD)
captured some photons with a wavelength of roughly 550nm.

Thus if one applies an IR filter, all visible light is filtered out and
only IR range wavelengths are allowed to pass. Now sadly in
digital format the result is saved in RGB which contains no
infromation about the contribution of invisible spectrum exposure
to the final image.

Thus looking for a decent IR filter for Photoshop ... would be like
looking for a good grayscale to colour filter, because the image
info is simply not there. ;)
 
Originally posted by Lord Hyperion
There is no filter, and there never will be one, although you could
probably jippo the effect using levels.

Why do I say this?

You have to understand the photographic proccess. A camera is
a glorified light-meter, it basically differs from a light meter in that
it does not take a single sample but a two-dimensional plane of
samples of varying resolution (depending on the camera and
film/CCD), molecular resolution in the case of film cameras.

So if you see green in a photograph it is because the film (or CCD)
captured some photons with a wavelength of roughly 550nm.

Thus if one applies an IR filter, all visible light is filtered out and
only IR range wavelengths are allowed to pass. Now sadly in
digital format the result is saved in RGB which contains no
infromation about the contribution of invisible spectrum exposure
to the final image.

Thus looking for a decent IR filter for Photoshop ... would be like
looking for a good grayscale to colour filter, because the image
info is simply not there. ;)

wow. you are the man.
 
kryptic, I saw an interesting snippet about some obscure beetle
whose lifecycle depends on the pollenation of some silly little
flower. The entomologist that studied these beetles found that
the males mysteriously knew when the flowers had been
pollenated. He discovered that the pollenated flowers (when
photographed using an IR filter) appear white and are therefore
in stark contrast with the dark un-pollenated flowers.

To the human eye the flowers simply look red! :D
 
He He He ... as I said, you can easily jippo the effect with levels,
BUT, it will never be real. Fred Miranda does not post comparative
images between his expensive PhotoShop actions and real IR
photographs.

As an example I can PROMISE you that if you had to take a REAL
IR-filtered photograph of the pollenated and unpollenated flowers
I spoke of earlier, they would look VASTLY different to the results
produced by Fred's "IR-gadget". ;)
 
Originally posted by Darkjestir
Well not if you know where to look. The gentlemen below charges for many of his photoshop actions, but they are most impressive to say the least and many of them duplicate lens effects.

http://www.fredmiranda.com/

Here is the link to his IR Photoshop Action

http://www.fredmiranda.com/DI/

They are out there and some of them are near undistinquishable.

The title of that page says it all: "Digital Infrared Emulation"

What he's selling might make a picture look like it was taken with an infrared-sensitive camera, but in reality it's just an action that attempts to provide a representation of data that simply doesn't exist. It isn't real, because (in Photoshop, or any other image editor) it simply can't be done.

Take, for example, two pictures, one of a black person, and one of a white person. With an infrared camera, you wouldn't be able to tell the difference, because the infrared radation given off by the human body doesn't depend on the color of your skin. But, using his "Emulation," it would be very easy to tell the difference. His actions are as flawed as any other computer-based attempt, because they base the output on the RGB-input, which is simply incorrect.
 
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