Information loss in compression

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Information loss in compression
Skills none IT concepts lossy and lossless
compression
This work is licensed under a Creative Commons
Attribution-Noncommercial-Share Alike 3.0
License.
2
Where does this topic fit?

• Internet concepts
• Applications
• Technology
• Implications
• Internet skills
• Application development
• Content creation

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Original, 139 KB
Was information lost?
Compressed to 4.6 KB
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If I send you this in an email?
Can you reconstruct this?
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Information is lost
This is an example of lossy compression
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Is lossy compression OK for spreadsheet files?
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Lossless compression
Transfer
Compress
Restore
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All data types can be compressed Why not
always use lossless compression?
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A few questions
Is lossy compression OK for text data? Is lossy
compression OK for audio data? Is lossy
compression OK for video data?
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Information loss in compression
Skills none IT concepts lossy and lossless
compression
This work is licensed under a Creative Commons
Attribution-Noncommercial-Share Alike 3.0
License.