Imageworld LLC

OCR (Optical Character Recognition)
A software process that converts a all or a portion of a digital image into text. Accuracy has increased dramatically in the past few years but is still dependent upon factors such as quality of the original document, size of fonts, and the software application itself. Commercial grade OCR packages are dramatically more accurate and more expensive than those available for home or small business use. While differences in accuracy (from 94-95% to 98-99%) may seem small for a dramatic cost increase ($150 to thousands) the cost can be justified when one considers volume. 10,000 pages with an average of 400 words per page amounts to 4 million words or a potential reduction of 160,000 errors. The time savings proof reading is significant.
http://www.imageworldllc.com/document-glossary-of-terms/

LZW
Lempel-Ziv-Welch, a widely used compression algorithm.
http://www.imageworldllc.com/document-glossary-of-terms/