MULTIMEDIA AND QUALITY OF SERVICE
COMPRESSION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -By definition lossy compression is compression that cannot recover the data. Therefore there cannot be what you ask for. Lossy compression is not used for text because, mostly, we do not want to lose anything when we compress text.
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: -With lossless compression, every bit of data originally in a file remains after it is uncompressed, and all the information is restored. Lossy compression reduces a file by permanently eliminating certain information, especially redundant information.
Detailed explanation-4: -Common lossy compression-based image formats are JPEG and MPEG.