MULTIMEDIA AND QUALITY OF SERVICE
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Throw away information
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Add information
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Multiply information
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None of the above
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Detailed explanation-1: -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-2: -There are two methods of compression – lossy and lossless. Lossy reduces file size by permanently removing some of the original data. Lossless reduces file size by removing unnecessary metadata.
Detailed explanation-3: -Lossy compression reduces bits by removing unnecessary or less important information. Typically, a device that performs data compression is referred to as an encoder, and one that performs the reversal of the process (decompression) as a decoder.
Detailed explanation-4: -Explanation: For the lossy compression, the information can be thrown away and still be acceptable.