What is Lossy Compression?

What is Lossy Compression? Data Restored Not Identical Lost
Lossy Compression

     LossyCompression reduces file size by removing unnecessary data. The data is eliminated based on a number of sophisticated mathematically-based formulae. The JPEG format uses lossy compression.
     A type of compression that results in the loss of some of the original data. LossyCompression trades the potential for the loss of some image quality for the opportunity for greater compressions. Whereas lossless compressions results in a compression ratio of about 2:1, LossyCompression of video data can lead to ratios of between 10:1 and 50:1 without visibly degrading image quality. JPEG and MPEG are examples of LossyCompression techniques. See also data compressions, interframe compressions, intraframe compressions.

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What is Lossy Compression? Data Restored Not Identical Lost