Additional image processing |
Used CCDSoft "Align Folder of Images" to align all of the
images and store the aligned images in a new "aligned" directory.
Then created one directory each for aligned red images, blue images,
green
images
and luminance images and transferred red images to red directory, green
images to green directory, etc. In CCDSoft, did a "Combine folder
of
images" addition operation on each of the four directories. This
resulted in one red stacked frame, one green stacked frame, one blue
stacked
frame and one luminance stacked frame. Read the four images into
AIP4WIN
and, on the luminance image, did a Van Cittert deconvolution with
Gaussian blur of 1.2, Noise
Reduction .5, 20 iterations, high-frequency only processing to produce
a sharper luminance image. Then did a Join Colors operation to
create
a color image. Used "Manual Settings" and reduced Gamma to .5,
increased Color Saturation to 2, and reduced luminance fraction to
.5.
Saved image as a JPEG file. Read file into Paint Shop Pro to run
edge-preserving-smooth noise filter (value 2) followed by an
unsharp-mask operation of radius 3, Strength 50, Clipping 5 and
saved
the result. Read result image into AstroPic, an image processing
program I wrote, and ran two iterations of my color brightening
algorithm (it brightens using an inverse exponential function so
brighter things remain unchanged but dimmer things get
brightened.)
Result image is what you see... |