MULTIMEDIA AND QUALITY OF SERVICE
COMPRESSION
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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: -Because GIF is a lossless data compression format, meaning that no information is lost in the compression, it quickly became a popular format for transmitting and storing graphic files.
Detailed explanation-3: -When you save a JPEG image, the compression is applied to the actual pixel data. That data can’t be magically reconstructed when the image is opened again. In other words, compression will permanently reduce the quality of a JPEG image. This is why JPEG compression is referred to as “lossy” compression.