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Data Compression : Why ?
Let's take an image ..."The size of this included image is 84 kB"
But 600 x 400 x 32 bits (2^32 colours = 16 Millions colours) = 7680000 bits = 1 MB !!! (937.5 kB)
No more 12 s but 2 minutes on a 56kbps modem !
84 kB is the compressed image
Compare your lab directory size and the zipped equivalent ... another type of compression
Different type of compression uses different
codec : compressor / decompressor
software routines
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VRarchitect
<
ANU lectures
:
The role of Digitisation
>
[
Contact
]
[
Links
]
[
Prev. : 18/28 : Network Bandwidth (2)
]
[
Up
]
[
Next : 20/28 : Finding Redundancy
]