I could not find anything about this in the archive so thought I'd ask here.
I have a 3d array of points with each point having an "intensity." I wish to group points into "galaxies," and wonder what algorithms are used in astronom? Does anyon here have any experience in this? I am looking for something that would be quick and does not need to be 100% accurate.
As an aside the actual problem is...... circle recognition in an image from a fabry perot. I have used hough transform and my 3d array is in "hough space." The array is sparse and thus I thought it is analogous to the problem of stars and assigning them to galaxies. I don't want to reinvent the wheel so....