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 Post subject: display colour channels individually
PostPosted: 23 Jan 2016 6:07 
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Joined: 26 Aug 2010 1:15
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PhotoFiltre version: 7.0.0
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Hi,
Can anyone tell me how to display the channels of an image (specifically red) individually?
Thanks,
...... john


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 Post subject: Re: display colour channels individually
PostPosted: 23 Jan 2016 9:30 
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don't know why you need that but you can use for example the filter greylevel and choose the Red channel.


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 Post subject: Re: display colour channels individually
PostPosted: 28 Jan 2016 19:58 
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Joined: 26 Aug 2010 1:15
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PhotoFiltre version: 7.0.0
Operating System: windows xp sp2
Processor: Intel p4 2800mhz
RAM memory: 1.5 gig
Hi Antonio. Thanks.
I'm trying to figure out how pure the NIR images are, of a camera that
has had it's IR filter removed.
Apparently looking at the individual channels, red green and blue,
will provide some indication of this ..... although I'm not sure how yet how.
Thanks again,
...... john


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 Post subject: Re: display colour channels individually
PostPosted: 29 Jan 2016 20:50 
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other solution, use color balance filter and set 2 channels to 0 to keep only the wanted channel.

lot of solution :wink:


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 Post subject: Re: display colour channels individually
PostPosted: 30 Jan 2016 2:54 
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Joined: 02 Feb 2005 10:35
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PhotoFiltre version: PF6 + 7 + Studio
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Hi Shinnen,

did you try the plugin "RGB Layers mixer" ? on this page : http://www.photofiltre-studio.com/plugins/plugins-en.htm
If you choose to extract each layers into separated pictures, you have to check that the RGB values are set on 0%

You can verify that the layers you've got are in the correct RGB value by this back process :
- Open the three layers you've got in the same image, one as background, the two others as layers
- Turn the Blend mode of the two layers as "Screen" mode (Opacity 100%)
- and you will see the exact RGB or HSL values of the original image.

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 Post subject: Re: display colour channels individually
PostPosted: 30 Jan 2016 20:25 
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Régulier
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Joined: 26 Aug 2010 1:15
Posts: 119
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PhotoFiltre version: 7.0.0
Operating System: windows xp sp2
Processor: Intel p4 2800mhz
RAM memory: 1.5 gig
Hi Antonio/Tom,
Thanks for your suggestions. I'm not really sure how looking at the various channels is going to tell me anything about the purity of my NIR image. I was told this but don't understand it. If anyone could explain it, I'd appreciate it.
...... john


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 Post subject: Re: display colour channels individually
PostPosted: 31 Jan 2016 12:31 
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Joined: 02 Feb 2005 10:35
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PhotoFiltre version: PF6 + 7 + Studio
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Yet, you know how extrac the pure RGB Layers with PhotoFiltre.
For the IR functions you can try different mode of blend on the RGB layers, but you should ask the specialists of IR how to proceed,
i don't know anything about these techniques.

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 Post subject: Re: display colour channels individually
PostPosted: 01 Feb 2016 3:28 
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Régulier
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Joined: 26 Aug 2010 1:15
Posts: 119
Gender: Male
PhotoFiltre version: 7.0.0
Operating System: windows xp sp2
Processor: Intel p4 2800mhz
RAM memory: 1.5 gig
Thanks Tom.
..... john


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