Data Compression


Criteria

Survey Formats

arbitrary File

Image

Audio

Video

Text

hybrid Formats

Basics

Compression Methods

Data Formats


Glossary

Index


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Survey: popular Formats and Procedures


Format Compression Annotations
File
ZIP [] Deflate
[] Deflate64™
Implode
Shrunk
Reduce
most common format supported by a large number of applications
[] ZIP
SIT   standard format for MacOS systems
native format of the application STuffIt
Text
ZIP [] Deflate
[] Deflate64™
Implode
Shrunk
Reduce
[] ZIP
Image
GIF [] LZW
colour reduction
Graphic Interchange Format
restricted to 256 colours; standard internet
[] GIF
JPEG [] DCT
[] Quantisation
[] Huffman Code
or
[] Arithmetic Code
Joint Photographic Experts Group
standard internet
[] JPEG
Audio
MP3 subband coding,
modified discrete cosine transform
strictly speaking:
MPEG-1 Audio Layer III
[] MPEG Audio
Video
MPEG motion compensation
discrete cosine transform
quantisation
[] Huffman Code
DVD (MPEG-2)
[] MPEG Video
hybrid Data
PDF [] LZW
[] Deflate
[] JPEG
JPEG2000
[] RLE
Portable Document Format;
LZW, Deflate and RLE are internally used for text and binary data; JPEG, JPEG2000 and RLE for image data;
proprietary format invented by Adobe

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Data Compression Archiving Survey: arbitrary File