MULTIMEDIA AND QUALITY OF SERVICE
COMPRESSION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Lossy
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Lossless
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Either A or B
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None of the above
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Detailed explanation-1: -The JPEG image file, commonly used for photographs and other complex still images on the web with no transparency, is generally compressed using lossy compression. Using JPEG compression, the creator can decide how much loss to introduce, and how much of a trade-off is acceptable between file size and image quality.
Detailed explanation-2: -Lossy compression: reduces file size by discarding information that is likely to be invisible to the human eye. Most of these algorithms have a variable quality threshold-as compression increases, the quality of an image decreases.
Detailed explanation-3: -By definition, lossy compression removes background data and approximates certain details of an image file-making it smaller and easier to handle, store or send. However, in return for a more manageable file size, you will lose data-permanently-hence the term ‘lossy’.