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 Post subject: Need help recomposing an image
PostPosted: Mon Nov 20, 2017 8:26 pm  (#1) 
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Hello,

To give some insight into my dilemma. I made multiple copies of the image named "original" and then proceeded to use the bandpass filter to create layers with specific "bands" of information from the original image. I have all of the "bands" needed to make the original image, however, I can't seem to compose them back together accurately.

I was told to try gimp's grain merge a go, but as you can see in the file, it does not look like the original.

How should I approach solving it?

EDIT: I'm having issues linking my files for you guys to look at. Apparently, it looks "spamy" since I'm a new user.


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 Post subject: Re: Need help recomposing an image
PostPosted: Tue Nov 21, 2017 2:21 am  (#2) 
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Not all the selections are additive... It will anyway depends on how your bands overlap.

What we all do these days is install the "Wavelet Decompose" filter. This creates the layers for us (each layer for some level of detail, so some kind of frequency band) in the right mode (but also creates layers that can be recomposed....)

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 Post subject: Re: Need help recomposing an image
PostPosted: Tue Nov 21, 2017 1:03 pm  (#3) 
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Welcome Camo_Steve!

I'm not quite sure what you are trying to do. For band pass are you using G'Mic?
I have taken images and decomposed them to their Red, Green and Blue channels.
Played with each channel and recomposed them. Is this anything like what you are
trying to do?


Attachments:
rgb-compose-flame.png
rgb-compose-flame.png [ 1.8 MiB | Viewed 215 times ]

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