The ImgStar Image Processing Tools are intended as a complete
environment for image processing to compliment Jef Poskanzer's pbmplus
toolkit which mostly provides conversion between different standard
file formats. All 70 ImgStar tools use a similar UNIX command line
invocation style which includes a self documenting "-h" option. Images
are piped between operators, each of which provides some filtering
transformation.
Tools are included that implement arithmetic and logical operations;
magnify, crop and subsample; implement edge detection (e.g. Canny);
allow custom space-domain or frequency-domain convolution; include
high-pass, low-pass, band-pass, rank-value, difference-of-Gaussians
and Gabor filtering; generate test images and implement differential
or vector operations e.g. gradient, derivatives, Laplacian. There are
also a variety of miscellaneous tools e.g. thresholding, zero-crossing
detection, and calculation of image statistics.
