Page 146 - Video Coding for Mobile Communications Efficiency, Complexity, and Resilience

Section 4.8. E4ciency of Block Matching at Very Low Bit Rates 123

Akiyo @ 7.5 f.p.s., QP = 5, 10, 15, 20, 25, 30
40
38

PSNR Y (dB) 36

34
32
30
INTRA
FDIFF
BMAH
28
0 20 40 60 80 100 120 140 160
Bit rate (kbits/s)
(a) AKIYO
Foreman @ 6.25 f.p.s., QP = 5, 10, 15, 20, 25, 30
38
36
34
PSNR Y (dB) 32

30
28
26
INTRA
FDIFF
BMAH
24
0 50 100 150 200 250
Bit rate (kbits/s)
(b) FOREMAN
Table Tennis @ 7.5 f.p.s., QP = 5, 10, 15, 20, 25, 30
38
36
PSNR Y (dB) 34
32
30
28

26
INTRA
FDIFF
BMAH
24
0 50 100 150 200 250
Bit rate (kbits/s)
(c) TABLE TENNIS
Figure 4.15: E!ciency of block-matching motion estimation at very low bit rates