DataCompression

DataCompression - Discussion #34 Data Compression...

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Discussion #34 Data Compression
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"Mercifully, our errors can soon be swallowed up by resilient repentance, showing the faith to try again--whether in a task or in a relationship. Such resilience is really an affirmation of our true identities! Spirit sons and daughters of God need not be permanently put down when lifted up by Jesus' Atonement. Christ's infinite Atonement thus applies to our finite failures!" - Neal A. Maxwell
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Data Compression
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How big? Image 1024x1024x3 3 Million bytes (3 MB) Audio - 48000 x 10 min x 60 sec/min x 2 58 million bytes (58 MB) Video 640 x 480 x 10 minutes 307,200 x 600 sec x 30 fps 16.6 billion pixels (17 GB) Compression (reduce the size)
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Problem Reduce the size of a data object Text Image Audio Video How to do it Cheat in ways that the user can’t see Coherence
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Ways to cheat Text generally only has less than 128 possible characters. Use 7 bits instead of 8 (12%) For text, some characters are more common than others Use fewer bits for common characters, more bits for infrequently used characters
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Ways to cheat
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DataCompression - Discussion #34 Data Compression...

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