Lossy and Lossless Data Compression

A detailed Summary of Lossy and Lossless Data Compression

As technology improves day in day out, users of multimedia systems expect more detailed and higher quality video images and audio sounds. As part of this report I will be critically evaluating the compression techniques lossy and lossless, which are widely used to compress video and audio.

Through this report I will be looking at the following:

Applications for high detailed graphics and sound require more and more storage space. A prime example is the internet. The Internet is very diverse, many sites having audio, photo and video galleries. All of which take up a lot of space to store, especially if they have not been compressed. Multimedia systems would also have insufficient bandwidth for the transmission of data.

Millions of people use the internet for viewing, downloading and transferring data. The Internet typically provides about 24 to 56KB/second. As images are becoming higher quality it means that downloading an image from the Internet from an uncompressed format e.g. 3MB could take about 7 minutes utilising a high-speed connection of 64KB/second. If the image were compresse

Whatever the standard, whether MPEG, JPEG or GIF, these groups will continuously be researching new compression algorithms.

JPEG is short for Joint Photographic Experts Group. JPEG is a committee that first established the baseline algorithms. It is one of the most commonly used lossy compression technique for colour images and is one of the main image file formats supported on the Internet.

Some common words found in the essay are:
Lossless Lossless, File Format, , MP3 MP3, Transformation DCT, DTS Conclusion, Definitions Compression, Interchange Format, Lossy Lossy, MPEG-1 MPEG-2, lossy compression, lossless compression, data compression, compression technique, compression ratio, data lost, video audio, lossy lossless, audio file, compression techniques, means data lost, strings frequently occurring, inserting strings frequently, repeated characters inserting, frequently occurring characters,

Approximate Word count = 2307
Approximate Pages = 9 (250 words per page double spaced)

Category: Technology

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