A form of image compression that reduces repeating elements in an image to mathematical expressions. Unlike JPEG compression, LZW compression is "lossless;" that is, compressing an image with LZW does not cause any image degradation. TIFF images can be LZW compressed; GIF images are always LZW compressed. (LZW is named for Lempel-Ziv-Welsh, the mathematicians who jointly invented it.)
Lempel, Zif, Welch compression. A form of run-length encoding that compresses some bitmap images. Compression is carried out by an algorithm that looks for areas of a single colour or patterns and replaces the repeating pixel data with the equivalent of 'the next pixels are...' Of little use for compressing continuous tone bitmaps and may in fact enlarge them.
Lempel-Ziv-Welch is a proprietary lossless data-compression algorithm used in GIF and TIFF files.
A compression algorithm, currently owned by Unisys and used by Adobe Photoshop to perform lossless compression on TIFF files.
File format that compresses .tif images without a loss of quality.
Short for Lempel-Zif-Welch, LZW is a lossless compression algorithm for data compression that conserves disk space without sacrificing any data in the image.
Lempel Ziv Welch - An image compression technique.
The Lempel-Ziv-Welch image compression technique. Abbreviation for a quantity of 1,000. ("M" is the Roman numeral for 1,000.)
(Limple-Ziv-Welch) is the non-lossy compression algorithm, usually compressed no more than 2:1, on *.tif (TIFF) files most often. LZW non-lossy compressions are most often used in archiving image files that cannot sustain any loss in quality.
A compression used to reduce the size of an image file. Usually associated with the .tiff format.
(Lempel-Ziv-Welch). A compression algorithm. It is contained inside of the GIF format.
A patented lossless data compression scheme that reduces image file size if the data can be compressed without degradation. (common option for .TIF bitmaps)
Lempel-Zif-Welch: a popular data compression technique developed in 1977 by J. Ziv and A Lempel. Unisys researcher Terry Welch later created an enhanced version of these methods, and Unisys holds a patent on the algorithm. It is widely used in many hardware and software products, including V.42bis modems, GIF and TIFF files and PostScript Level 2.
Abbreviation for Lempel-Ziv-Welch, a standard algorithm widely used for compression of data. OCR (Optical Character Recognition) When a page is scanned, the page is initially stored as an image only, and the computer does not identify the image as text. Optical Character Recognition is a process that produces a page of text from an image file. It is usually only accurate in the mid 90% range, and must be corrected by a proofer for most applications except for text searching. PDF Adobe's Portable Document Format. The term Adobe uses to describe Acrobat files. (See Acrobat)
The Lempel-Ziv-Welch image compression technique, often an option when saving Tiff formatted files.
A form of lossless compression available in TIFF files. LZW compression is proprietary. The acronym LZW is derived from the names of its creators Lempel-Ziv and Welch. We can provide this type of file upon request. File size reduction is only about 25%.
Developed by Lempel, Zif, and Welsh: a special kind of compression reducing required storage capacity for Bitmap formats without loss in quality.
A compression scheme used to reduce the size of image files.
Lempel-Zefv Welch - method of compression - a compression algorithm used to compress many different types of computer file.
LZW (Lempel-Ziv-Welch) is a universal lossless data compression algorithm created by Abraham Lempel, Jacob Ziv, and Terry Welch. It was published by Welch in 1984 as an improved implementation of the LZ78 algorithm published by Lempel and Ziv in 1978. The algorithm is designed to be fast to implement but not necessarily optimal since it does not perform any analysis on the data.
