MULTIMEDIA AND QUALITY OF SERVICE
COMPRESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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All data is lost
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The file size stays the same
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All of the important data is kept
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None of the above
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Detailed explanation-1: -With lossless compression the file data is restored and rebuilt in its original form after decompression, enabling the image to take up less space without any discernible loss in picture quality. No data is lost and as the process can be reversed, it’s also known as reversible compression.
Detailed explanation-2: -Lossless compression is fully reversible, meaning the original file can be recreated bit for bit.
Detailed explanation-3: -So if you are looking to retain the quality of your images, lossless compression is definitely the way to go. Advantages: No loss of quality, slight decreases in image file sizes. Disadvantages: Larger files than if you were to use lossy compression.
Detailed explanation-4: -Lossless compression uses an algorithm to shrink the image without losing any important data. Essentially, it rewrites the file to make it more efficient-resulting in a smaller storage or transfer size. One way the algorithm does this is by replacing non-essential information and storing them in an index file.