|
Hi Peter.
I use software binning in Nebulosity - presume that it is just averaging data from 4 pixels to get one new pixel (the pixel noise stats indicate that this is what it does). If the read noise is low enough, this is functionally the same as you would get from a perfect 2x2 binning process, only with signal and noise scaled by 0.25.
Reducing size could be done the same way - but it could also be done by just taking one out of the four pixels to represent the new pixel data, or using a surface fitting process - would need to know how Photoshop does it under the hood.
Last edited by Shiraz; 06-07-2014 at 02:41 PM.
|