Jump to content

IR image processing - Color channel swap!


Recommended Posts

I'm experimenting with a digital IR camera.  The images are very "magenta" in color and everyone states to simply "swap the Red and Blue" color channels.  How can this be done in Paint.net?  Is there a plugin that would help process IR color pictures?

 

post-135199-0-60443100-1392319302_thumb.

 

Link to comment
Share on other sites

The problem with "adjusting" the color in an IR image is that IR is a "color" by itself. We just can't see it with our own eyes.

IR light isn't emitted or reflected in the same ratios as other wavelengths of light, so no matter how you adjust this image through the RGB spectrum, something will always be off because that's simply not how the other wavelengths of light were reflected.

In terms of color channels, what you are looking at is not the Red, Blue, OR Green channel. That's the IR channel. You aren't supposed to be able to see that, so it won't ever look "natural."

No, Paint.NET is not spyware...but, installing it is an IQ test. ~BoltBait

Blend modes are like the filling in your sandwich. It's the filling that can change your experience of the sandwich. ~Ego Eram Reputo

Link to comment
Share on other sites

Stus's Plugin pack has an adjustment plugin called "RGB Remapper." You can use that to swap the red and blue channels (set red to 0 0 255, green to 0 255 0, and blue to 255 0 0).

From the looks of the tutorial, the rest can be done with the hue and saturation adjustment and Tanel's Color Mixer plugin

No, Paint.NET is not spyware...but, installing it is an IQ test. ~BoltBait

Blend modes are like the filling in your sandwich. It's the filling that can change your experience of the sandwich. ~Ego Eram Reputo

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...