MULTIMEDIA AND QUALITY OF SERVICE
COMPRESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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information not needed is deleted.
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increases the amount of data in the file.
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gives a shiny look when saved.
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does not impact quality when saved.
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Detailed explanation-1: -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-2: -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’.
Detailed explanation-3: -In lossy compression, the data in a file is removed and not restored to its original form after decompression. Specifically, data is permanently removed, which is why this method is also known as irreversible compression. This data loss is not usually noticeable.