Graphics Reference
In-Depth Information
Tabl e 7. 4
Luma BD-rates evaluating objective effects of using deblocking filtering under various
coding conditions
Anchor: disable
deblocking
Test: enable
deblocking
Y BD-rate
Random
Access
(RA)
Low
Delay B
(LB)
Low
Delay P
(LP)
All Intra
(AI)
Class A
Traffic
2.3 %
2.7 %
n/a
n/a
Cropped 4K 2K
PeopleOnStreet
2.0 %
4.4 %
n/a
n/a
Nebuta
1.1 %
1.1 %
n/a
n/a
SteamLocomotive
2.3 %
5.4 %
n/a
n/a
Class B
Kimono
4.1 %
5.7 %
5.9 %
8.0 %
1080p
ParkScene
1.4 %
1.9 %
2.0 %
2.8 %
Cactus
1.3 %
3.4 %
3.7 %
4.5 %
BasketballDrive
1.8 %
3.9 %
3.7 %
4.9 %
BQTerrace
0.3 %
1.1 %
0.6 %
2.3 %
Class C
BasketballDrill
0.7 %
2.1 %
2.1 %
2.8 %
WVGA
BQMall
1.5 %
2.5 %
2.6 %
3.1 %
PartyScene
0.4 %
0.8 %
0.8 %
0.9 %
RaceHorses
1.2 %
2.6 %
2.9 %
3.2 %
Class D
BasketballPass
1.4 %
2.5 %
2.5 %
2.9 %
WQVGA
BQSquare
0.1 %
0.0 %
0.6 %
0.3 %
BlowingBubbles
0.4 %
0.9 %
0.8 %
1.1 %
RaceHorses
0.9 %
2.3 %
2.4 %
2.7 %
Class E
FourPeople
2.3 %
n/a
4.9 %
6.6 %
720p
Johnny
2.2 %
n/a
2.2 %
5.8 %
KristenAndSara
2.1 %
n/a
4.0 %
6.0 %
Class F
BasketballDrillText
0.6 %
2.0 %
1.9 %
2.5 %
ChinaSpeed
0.7 %
1.8 %
1.9 %
2.3 %
SlideEditing
0.3 %
0.3 %
0.5 %
0.7 %
SlideShow
0.8 %
0.9 %
0.8 %
1.1 %
Class summary
Class A
1.9 %
3.4 %
n/a
n/a
Class B
1.8 %
3.2 %
3.2 %
4.5 %
Class C
0.9 %
2.0 %
2.1 %
2.5 %
Class D
0.7 %
1.4 %
1.3 %
1.6 %
Class E
2.2 %
n/a
3.7 %
6.1 %
Class F
0.6 %
1.2 %
1.3 %
1.6 %
Overall summary
All
1.3 %
2.3 %
2.3 %
3.2 %
Decoding time (%)
107 %
104 %
104 %
105 %
bit rate decrease at the same quality depending on the configuration. For certain
classes of sequences, 6 % decrease of bit rate is achieved.
Figure
7.22
compares a part of a decoded picture from the
BasketballDrive
sequence (1080p, 50 fps) in Random Access configuration at QP
D
32 where
the deblocking was applied with the configuration where the deblocking was
turned off. Figure
7.23
shows same comparison for the sequence
KristenAndSara
