Keith's Image Stacker - Image processing program
Version: 5.0Keith's Image Stacker is an image processing program that is oriented primarily toward astrophotography. This program lets you bring a quicktime movie or a series of image files into a workspace. Once in the workspace you can align the individual frames to one another and then "stack" them, which gives you an average. The resulting image will have a higher signal-to-noise ratio and a higher dynamic range than the individual frames.
License: Free To Try $15.00
Operating System: Mac OS X
What Keith's Image Stacker provides, more than anything else, is a workspace in which to align many similar images (say from a quicktime movie of Jupiter taken through a telescope with a webcam) and then to produce a stack of the images, which consists of a single image that comprises either the sum, or the average, or some value in between of the individually stacked images.
Stacking images is a well-established method for increasing the signal-to-noise ratio in a series of similar images. True "information" will shine through the stack, while random noise will drop out.
Keith's Image Stacker also provides a host of post-processing commands including darkframe subtraction (for those pesky thermal noise blemishes on you webcam's ccd), gaussian blur, noise reduction, unsharp mask, flat frame field division, laplac
Here are some key features of "Keiths Image Stacker":
· Translational and rotational alignment
· Darkframe subtraction and flatfield division
· DeBayering (demosaicing)
· Averaging and/or summing (collectively known as "stacking")
· Laplacian sharpening (which is also known by the more general term wavelet sharpening, although there are actually many wavelet-based image-sharpening algorithms, of which Laplacian sharpening is only one)
· Level adjustment
· Gaussian blur
· Wavelet shrinkage denoising
· Fourier Transform editing (for removal of cyclic or periodic artifacts such as electrical interference patterns)
· Star deringing and debloating
· Many other operations as well