IR conversion

Does PSP 8.1 have a way to convert to infrared ????

Thanks.

DA wrote:
> 
> Does PSP 8.1 have a way to convert to infrared ????

Nothing has a way to convert a color image to infrared. The reason
is this. Real infrared images capture the infrared reflectivity
of objects and two objects of exactly the same visible color may
have completely different reflectivities. This means you can't
properly reconstruct an infrared image from a color image without
access to any additional information. These articles have some
information about IR imaging:
http://www.creativepro.com/story/feature/16589-1.html
http://dpfwiw.com/ir.htm
The best you can hope to do starting with a regular color image is
to fake some pretend infrared which might convince the uninitiated.

Here's a quick and dirty way of faking.
1. Run Edge Preserving Smooth at a setting just high enough to
   denoise the image without affecting detail. (Users of later
   PSP versions should use Digital Camera Noise Removal instead.)
2. Do Layers > Duplicate and hide the visibility of the top layer,
   leaving the bottom layer active. (Do this in the Layer Palette.)
3. Do Adjust > Color Balance > Channel Mixer and check Monochrome.
   Then set the following: Red 82, Green 126, Blue -90. These
   settings work reasonably well for scenes with a lot of vegetation
   and an expanse of sky, which are the kind of scenes that IR looks
   good with. For other subjects (e.g. flower close-ups) you are
   going to have to tune these settings to produce something that
   looks suitably infrared and does not result in destruction of
   detail in bright areas.
4. Make the duplicate layer active and apply Gaussian Blur at a
   Radius of around 20 (more if your image is large and you have
   to zoom out to see it all).
5. In the Layer Palette set the blend mode of the top layer you
   just blurred to Screen and adjust the opacity to control the
   effect. It produces a variation of a color IR effect.
6. You can ring the changes on step 5 by running Adjust > Hue and
   Saturation > Colorize. If you set the Saturation to zero you
   will get back a black and white image but with some of the glow
   effect of infrared. By using a non-zero Saturation along with
   a Hue that appeals to you, you can add subtle tints to your
   fake IR photo.

Here's another recipe for creating a fake infrared effect:
http://forums.dpreview.com/forums/read.asp?forum=1006&message=6030879
If you don't like either recipe, you can download yourself a free
plug-in here:
http://cybia.co.uk/pseudoir.htm

It is also possible that when you talk about "IR conversion" you
aren't really interested in simulating infrared photography but
instead want to create a pretend "night vision" effect. If that's
the case you're going to have to make that clear. However, in the
meantime here's a free plug-in for cooking up this effect:
http://www.cybia.co.uk/nightscope.htm

DA wrote:
> Does PSP 8.1 have a way to convert to infrared ????
>
> Thanks.

No but you can make it look as if it was taken with infer red film. But are 
you sure you know which effect you want. If its Black and white with 
bleached out highlights you might want to split to RGB and just use the 
Green channel

-- 
Trev
You can always tell a Yorkshire man,
But you can't tell him much.