Ha Extraction of OSC Data

[frasax]

Hi,

i´ve imaged a couple of Pictures with an Duo Narrowband Filter, and an OSC Camera. I now would like to seperate The RGB Channels from my Image to extract e.g. the Ha from the Red Channel without having too much Noise from the other Channels, hence want to do that in an early Stadium of Imageprocessing.
Does anyone did this before, or maye are there any suggestions how to do so?

CS Frank

[UlteriorModem]

Wont a simple channel extraction work? It will of course have to be de-bayered first.

[frasax]

HI,

not sure, think i will get the noise from the green and blue channel in my red channel then!?

CS Frank

[pfile]

most debayer algorithms don't mix the channels together. i think maybe AHG does but PI doesn't support that method anyway.

you can use the SplitCFA process if you want to extract the individual R/G/G/B image from a bayer image.

rob

[chris.bailey]

I have processed a couple of images using a Duo NB filter and SplitCFA works much better using de-bayer and channel extraction. You do then need to synthesise the third channel. With objects that are strong in the relevant NB element, it does work remarkably well though HA does seem to dominate.