In late 1994, controversy was brewing over royalties being imposed on GIFs due to the Lempel–Ziv–Welch (LZW) data compression technique used to underpin this image format. Unisys, which had patented ...

This is what run-length encoding requires. Correspondingly, delta encoding followed by Huffman and/or run-length encoding is a common strategy for compressing signals. LZW compression is named after ...

A patent underlying one of the Web's most popular graphics formats is set to expire later this month, raising the question of whether a rival, open-source format, created as a royalty-free alternative ...

The GIF format uses the LZW compression algorithm, which was patented by Unisys, and publishers of applications that read and write GIF87a and GIF89a images were required to obtain a license and pay ...

A lossless compression algorithm based on the LZW with compression ratios of 50 ? 60%, using 2K of RAM and 80% or more with 8K or 16K.

Until now, compression algorithms such as the Lempel-Ziv-Welch (LZW) have been implemented in software. This provided acceptable compression performance in many older systems. But with today's ...

Compressing digital panoramic images can affect their diagnostic quality and the ability to evaluate certain anatomical structures, according to a study in Clinical Oral Investigations (July 6, 2011).

In a world with finite storage and an infinite need for more storage space, data compression becomes a very necessary problem. Several algorithms for data compression may be more familiar – Huffman ...

As we keep building on old image technology, types of file formats keep piling up, each with their own nuances and uses. JPG, PNG, and GIF have become the most common, but what sets them apart from ...

Compression is the science of making data representations smaller, in order to decrease the data's bandwidth and storage requirements. Compression applications are everywhere: in computers (WinZip and ...