MULTIMEDIA AND QUALITY OF SERVICE
COMPRESSION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Audio files using lossy compression.
|
|
|
Audio files using lossless compression.
|
|
|
Video files using lossy compression.
|
|
|
Image files using lossless compression.
|
|
|
Image files using lossy compression
|
Detailed explanation-1: -A JPEG file supports up to 24-bit color and uses lossy compression to compress images for more convenient storage and sending. This may make JPEGs better for everyday use, but it does mean sacrificing some of the original image quality.
Detailed explanation-2: -JPEG, which stands for Joint Photographic Experts Groups is a “lossy” format meaning that the image is compressed to make a smaller file. The compression does create a loss in quality but this loss is generally not noticeable.
Detailed explanation-3: -Lossy compression refers to compression in which some of the data from the original file (JPEG) is lost. The process is irreversible, once you convert to lossy, you can’t go back. And the more you compress it, the more degradation occurs. JPEGs and GIFs are both lossy image formats.
Detailed explanation-4: -The most common lossy image formats are JPEG and GIF. However, our human eyes do not notice the difference between JPEG, GIF, PNG, or other formats. Images are great candidates for lossy compression because of the way our eyes work. Our eyes have a different sensitivity to different colors.