MULTIMEDIA AND QUALITY OF SERVICE
COMPRESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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No information is lost when compressed
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A file that takes up less space than the original file
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Information is lost when compressed
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None of the above
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Detailed explanation-1: -2 Lossy Compression. Lossy compression techniques involve some loss of information, and data that have been compressed using lossy techniques generally cannot be recovered or reconstructed exactly.
Detailed explanation-2: -Lossy compression is typically used when a file can afford to lose some data, and/or if storage space needs to be drastically ‘freed up’. Here, an algorithm scans image files and reduces their size by discarding information considered less important or undetectable to the human eye.
Detailed explanation-3: -6.4. Lossless compression is a compression technique that does not lose any data in the compression process. Lossless compression “packs” data into a smaller file size by using a kind of internal shorthand to signify redundant data.