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Figure 2-28 shows the packing process; four 10 bits of pixels A, B, C, and D are divided into
higher 2 bits and lower 8 bits, then converted into five 8 bits of image data.
LSB
MSB
COPYRIGHT © 1999 CANON INC. CANOSCAN FB330/FB630 SERIES REV.0 OCT. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Lower 8 bits of
Higher 2 bits of
pixels A to D
pixels A to D
A
B
C
D
A
E
1
1
1
1
9
1
A
B
C
D
A
E
2
2
2
2
10
2
A
B
C
D
B
E
3
3
3
3
9
3
......
A
B
C
D
B
E
4
4
4
4
10
4
A
B
C
D
C
E
5
5
5
5
9
5
A
B
C
D
C
E
6
6
6
6
10
6
A
B
C
D
D
E
7
7
7
7
9
7
A
B
C
D
D
E
8
8
8
8
10
8
Figure 2-28
CHAPTER 2
2 - 37
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