An Efficient Hierarchical Video Coding Scheme Combining Visual Perception Characteristics
Table 2
Performance of the proposed algorithm compared with H.264/AVC standard.
Video sequence
QP
Time (%)
Bit rate (%)
PSNR-Y (dB)
ROI-PSNR-Y (dB)
Foreman
28
−71.24
+2.19
−0.30
−0.25
32
−71.92
+2.15
−0.29
−0.21
36
−70.81
+2.06
−0.17
−0.15
Hall
28
−83.64
+1.24
−0.21
−0.19
32
−84.27
+1.17
−0.22
−0.14
36
−84.98
+1.12
−0.19
−0.13
Salesman
28
−76.43
+2.12
−0.26
−0.21
32
−75.92
+1.87
−0.20
−0.15
36
−76.01
+1.83
−0.14
−0.12
Car-phone
28
−73.85
+2.84
−0.32
−0.24
32
−73.36
+2.57
−0.21
−0.19
36
−74.96
+1.69
−0.14
−0.12
News
28
−85.47
+2.14
−0.13
−0.11
32
−85.84
+2.13
−0.12
−0.07
36
−85.93
+1.86
−0.09
−0.08
Coastguard
28
−61.24
+2.47
−0.28
−0.24
32
−62.35
+2.13
−0.29
−0.26
36
−62.62
+1.76
−0.21
−0.18
Paris
28
−84.12
+1.07
−0.29
−0.23
32
−84.61
+1.15
−0.22
−0.21
36
−84.97
+1.03
−0.21
−0.17
Silent
28
−80.14
+1.51
−0.24
−0.18
32
−80.86
+1.42
−0.18
−0.15
36
−81.32
+1.17
−0.11
−0.09
Mother and Daughter
28
−83.76
+1.85
−0.18
−0.14
32
−83.89
+1.64
−0.10
−0.10
36
−84.21
+0.09
−0.08
−0.05
Akiyo
28
−85.64
+1.87
−0.11
−0.09
32
−85.76
+1.21
−0.08
−0.07
36
−86.41
+0.08
−0.07
−0.06
Average results
QP
28
−78.55
+1.93
−0.188
−0.153
32
−78.88
+1.74
36
−79.22
+1.27
Description: The symbol “+” means enhancement or increase; symbol “−” means decrement or decrease. PSNR-Y means the peak signal-to-noise ratio of luminance, and it also represents the quality of the reconstructed video image. PSNR-Y means the difference of the PSNR-Y. ROI-PSNR-Y means the non-zero region of the PSNR-Y in visual perception characteristics mark.