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  2. Lossy compression - Wikipedia

    en.wikipedia.org/wiki/Lossy_compression

    In information technology, lossy compression or irreversible compression is the class of data compression methods that uses inexact approximations and partial data discarding to represent the content. These techniques are used to reduce data size for storing, handling, and transmitting content.

  3. Data compression - Wikipedia

    en.wikipedia.org/wiki/Data_compression

    Although lossless video compression codecs perform at a compression factor of 5 to 12, a typical H.264 lossy compression video has a compression factor between 20 and 200. [ 69 ] The two key video compression techniques used in video coding standards are the DCT and motion compensation (MC).

  4. Error level analysis - Wikipedia

    en.wikipedia.org/wiki/Error_level_analysis

    When used, lossy compression is normally applied uniformly to a set of data, such as an image, resulting in a uniform level of compression artifacts. Alternatively, the data may consist of parts with different levels of compression artifacts. This difference may arise from the different parts having been repeatedly subjected to the same lossy ...

  5. Diagnostically acceptable irreversible compression - Wikipedia

    en.wikipedia.org/wiki/Diagnostically_acceptable...

    The "amount of compression" in irreversible compression used to be determined by the compression ratio, where the acceptable minimum is determined by the algorithm (typically JPEG or J2K) and the data type (body part and imaging method). Such a definition is easy to follow, and has been used by medical bodies in 2010 around the world.

  6. LZ77 and LZ78 - Wikipedia

    en.wikipedia.org/wiki/LZ77_and_LZ78

    Even though all LZ77 algorithms work by definition on the same basic principle, they can vary widely in how they encode their compressed data to vary the numerical ranges of a length–distance pair, alter the number of bits consumed for a length–distance pair, and distinguish their length–distance pairs from literals (raw data encoded as ...

  7. Why are older women predisposed to osteoarthritis?

    www.aol.com/why-older-women-predisposed...

    According to the Centers for Disease Control and Prevention (CDC), women over 50 are at a higher risk for osteoarthritis. This age is around the time that menopause happens .