GNU zip (gzip) is a GNU free software file compression program.
It was created by Jean-loup Gailly and Mark Adler. gzip is based on the DEFLATE algorithm, which is a combination of LZ77 and Huffman coding.
DEFLATE was intended as a replacement for LZW and other patent-encumbered data compression algorithms which, at the time, limited the usability of compress and other popular archivers.
"gzip" is often also used to refer to the gzip file format.Handwriting Recognition Handwriting recognition refers to a computer receiving handwritten input and intelligently recognize it to some characters.
The image of the written text may be sensed "off line" from a piece of paper by optical scanning (optical character recognition).
Alternatively, the movements of the pen tip may be sensed "on line", for example, by a pen-based computer screen surface.