Databases Reference
In-Depth Information
Weight (lb)
180
x
x
4
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160
x
140
120
x
x
x
2
3
100
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x
80
60
1
x
40
4
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7
Height (in)
F I GU R E 10 . 7
Initial state of the vector quantizer.
Weight (lb)
180
x
x
4
x
160
x
140
3
120
x
x
x
100
x
x
2
80
60
1
x
40
4
5
6
7
Height (in)
F I GU R E 10 . 8
The vector quantizer after one iteration.
The LBG algorithm is conceptually simple, and as we shall see later, the resulting vector
quantizer is remarkably effective in the compression of a wide variety of inputs, both by itself
and in conjunction with other schemes. In the next two sections we will look at some of
the details of the codebook design process. While these details are important to consider
when designing codebooks, they are not necessary for the understanding of the quantization
process. If you are not currently interested in these details, you may wish to proceed directly
to Section
10.4.3
.
