
i
i
i
i
i
i
i
i
384 17 Denoising in Communications
0
2
4
6
8
10
12
14
16
18
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
MV Bandwidth Ratio (%)
Video Sequence Number
Figure 17.8 The bandwidth percentage used by transmitting motion information in (BPSK, 1/2).
scheme (BPSK, 1/2), and check whether the use of bandwidth is worthy. Figure 17.8
shows the bandwidth ratio and we can see that the amount of motion information
differs greatly among sequences. Sequence #6 (football) has very complex motions,
while Sequence #1 (akiyo) and #11 (news) have simple or small motions.
Then we verify our claim that temporal redundancy should be removed at the en-
coder, and examine in what ...