compression - image and data-compression applications and algorithms, such as Huffman Encoding, that reduce the number of bits a picture would normally take up without sacrificaing any fidelity
A method of image compression where there is no loss in quality when the image is uncompressed The uncompressed image is mathematically identical to its original Lossless compression is usually lower in compression ratio than lossy compression
A compression protocol which does not sacrifice ("lose") any detail in compression or decompression "Lossless" compression formats are essential in applications like compressing program files or backing up data from a hard disk In applications which don't require exact reproduction of the file being compressed, a "lossy" protocol may be used The ZIP format developed by PKWare is a "lossless" file compression protocol
Data compression algorithms that store date in a format that does not cause data loss in the compression process Typically this type of compression has a ration of up to 8: 1
is used in the context of describing audio encoding schemes (e g , PCM, MLP) where no detail or nuance of the original analog master or source material/signal are lost during the analog-to-digital and digital-to-analog conversion process See Pulse Code Modulation (PCM) or Meridian Lossless Packing (MLP)
The maintenance of image quality of an image that has been compressed and decompressed The process of compressing and decompressing often degrades image quality A lossless image is one in which the image quality of a decompressed file appears nearly identical to the original