Data Compression


Criteria

Survey Formats

Basics

Compression Methods

Data Formats


Run Length Encoding

General Principle

Control Characters

RLE for Image Data

Pixel Coding

Sequential Processing

Line Coding

Cross-Coding

End of Line Marker

Repetition of Lines

Lossy RLE

Implementations


Glossary

Index


Download


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Lossy RLE


The attribute "lossy" is a contradiction to the fundamental mechanisms of the RLE. However procedures for special applications were developed, which reduce the colour resolution while encoding. The losses result from the entire encoding scheme, not from run length encoding itself.


The aim of this procedures was a better compression for image data like pictures or photos. Whether this technology was used to a larger extent, is not well-known. In the meantime such methods become obsolet because more complex algorithms offer better compression rates and quality.


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RLE for Image Data Repetition of Lines Implementations