Data compression gcse computer science

  • Text compression techniques

    Lossy compression
    Data is often acted on by instructions. is removed and discarded, thereby reducing the overall amount of data and the size of the file.
    An image can be compressed by reducing its colour depth close colour depthThe amount of bits available for colours in an image...

  • What is data compression GCSE computer science?

    Compression is used to reduce file sizes – something which is essential in an era of online video streaming and media sharing.
    Without compression, we would: Fit less music, videos or photos onto your smart phone or computer.
    Struggle to stream or download videos from the internet..

  • What is data compression in computer science?

    Data compression is the process of encoding, restructuring or otherwise modifying data in order to reduce its size.
    Fundamentally, it involves re-encoding information using fewer bits than the original representation..

Lossy compression is ideal for image, sound and video files where data can be lost without affecting the quality of final uncompressed file. Lossless compression should be used on text and software files, where it is important that when the file is uncompressed, it is a perfect copy of the original file.

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