Quaternions are numbers with 4 parts: one for time and three for space. Command Line Quaternions is a set of command line functions that generate thousands of points of quaternions, which are fed into animation software. This forms the foundations of analytic animations, a logical extension of analytic geometry.
impr is a small and fast image processing library with a simple API. Its functions work mostly on 8-bit image channels, which means that main type is just (u8 *) or (b8 *) for grey and binary images respectively. It was intended for use in real-time processing, so functions are optimized for speed. It supports segmentation (4 and 8-connected), flood fill, filling object holes, downscaling and upscaling (with linear interpolation) by an integer factor, generic implementations of dilate and erode (+image open and close), color space conversions between HSVRGB and YRGRGB, convolutions with Roberts and 2x2 low-pass filters, and common binary image operations.
TAMOGEN is designed either to create a mosaic of one image out of another or to create a mosaic of one image out of itself. Instead of selecting images from a pool on a best-fit basis, the generator utilizes one user-identified image to create a mosaic of another user-identified image by altering the tone of the component image. TAMOGEN will create color or black-and-white mosaics of arbitrary size.
AKVIS SmartMask plug-in is an efficient selection tool. There are two pencils: blue and red. You draw a line with the blue pencil inside the object you want to select, and with the red pencil some lines outside the object to define the areas that should be cut out. The plugin offers three modes: Sharp, Soft, and Complex.