What is the difference between lossless and lossy compression?
What will be an ideal response?
Lossless compression means that no data is lost or destroyed when performing successive compression and decompression
operations; that is, if X is compressed to form Y, and Y decompressed to get Z, then X and Z are
identical if the algorithm is lossless. Run length, Huffman, and ZIP compression technologies are all examples of
lossless encoding.
Lossy compression performs a compression and decompression operation where the final result is not the same
as the original source data. It is impossible to recover exactly the original source data. After a large number of
lossy compression and decompression cycles, the original data may be too altered to be of any practical use.
Lossy compression is used with data where a slight information loss is acceptable; for example with audio, image, and video signals. Lossy compression relies on the human inability to detect small errors in sound and
images.
MPEG, MP3, and JPEG are examples of lossy encoding.
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What will be an ideal response?
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What will be an ideal response?