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Lossless and lossy are the two (2) universally known categories of compression algorithms. Compare the two (2) categories of algorithms, and determine the major advantages and disadvantages of each. Provide one (1) example of a type of data for which each is best suited.

Oct 18th, 2015

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Lossless compression technique uses data compression algorithm that warranties the original (same) data to reconstructed from the data compressed. Thus, its useful when a user needs the compressed data to be the same after reconstruction.

data types that use lossless data compression

  • source codes and executable files
  • image file formats e.g. PNG
  • GIF
 Lossy compression technique does not allow an identical data to be reconstructed after compression. Itr is useful in internet applications. For example, media streaming.
data types that use lossy data compression
  • Sound
  • Images eg MNG TIF
Advantage comparison
  • Lossy technique can produce a much smaller compressed data file compared to lossless technique
  • Lossless compression schemes are reversible so that the original
In practice, lossy data compression will also come to a point where compressing again does not work

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Oct 18th, 2015

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