BD-rate and Processing Time (4-CTU configuration):
-
Lossy Results:
|
All Intra
|
Random Access
|
Low Delay B
|
|
G/Y
|
B/U
|
R/V
|
G/Y
|
B/U
|
R/V
|
G/Y
|
B/U
|
R/V
|
RGB, text & graphics w/ motion, 1080p
|
−6.4%
|
−6.1%
|
−6.2%
|
−3.7%
|
−3.3%
|
−3.4%
|
−2.4%
|
−2.1%
|
−2.2%
|
RGB, text & graphics w/ motion,720p
|
−3.3%
|
−3.0%
|
−3.0%
|
−2.6%
|
−2.3%
|
−2.3%
|
−0.9%
|
−0.8%
|
−0.9%
|
RGB, mixed content, 1440p
|
−2.5%
|
−2.3%
|
−2.4%
|
−1.7%
|
−1.5%
|
−1.6%
|
−1.0%
|
−0.8%
|
−0.9%
|
RGB, mixed content, 1080p
|
−3.7%
|
−3.4%
|
−3.4%
|
−3.0%
|
−2.4%
|
−2.5%
|
−1.5%
|
−1.2%
|
−1.0%
|
RGB, Animation, 720p
|
0.0%
|
0.0%
|
0.0%
|
−0.1%
|
−0.1%
|
0.1%
|
0.0%
|
0.0%
|
0.0%
|
RGB, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
YUV, text & graphics w/ motion, 1080p
|
−6.2%
|
−5.7%
|
−5.8%
|
−3.3%
|
−2.9%
|
−2.9%
|
−2.0%
|
−1.7%
|
−1.8%
|
YUV, text & graphics w/ motion,720p
|
−3.0%
|
−2.7%
|
−2.9%
|
−2.5%
|
−2.1%
|
−2.2%
|
−0.9%
|
−0.7%
|
−0.5%
|
YUV, mixed content, 1440p
|
−2.4%
|
−2.4%
|
−2.4%
|
−1.8%
|
−1.4%
|
−1.7%
|
−0.9%
|
−0.8%
|
−0.6%
|
YUV, mixed content, 1080p
|
−3.7%
|
−3.1%
|
−3.4%
|
−2.9%
|
−2.4%
|
−2.7%
|
−1.6%
|
−1.1%
|
−1.5%
|
YUV, Animation, 720p
|
0.0%
|
−0.1%
|
0.0%
|
−0.1%
|
0.0%
|
−0.1%
|
0.0%
|
−0.4%
|
−0.1%
|
YUV, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
−0.1%
|
0.0%
|
0.0%
|
0.0%
|
0.2%
|
Enc Time[%]
|
119%
|
103%
|
102%
|
Dec Time[%]
|
106%
|
102%
|
102%
| -
Lossless Results:
|
All Intra
|
Random Access
|
Low Delay B
|
|
Avg.
|
Min
|
Max
|
Avg.
|
Min
|
Max
|
Avg.
|
Min
|
Max
|
RGB, text & graphics w/ motion, 1080p
|
7.1%
|
4.8%
|
11.1%
|
5.3%
|
2.7%
|
8.3%
|
4.4%
|
2.5%
|
6.0%
|
RGB, text & graphics w/ motion,720p
|
2.1%
|
0.5%
|
4.6%
|
1.2%
|
0.3%
|
3.6%
|
0.6%
|
0.2%
|
1.7%
|
RGB, mixed content, 1440p
|
1.1%
|
0.4%
|
1.7%
|
0.2%
|
0.1%
|
0.3%
|
0.1%
|
0.0%
|
0.2%
|
RGB, mixed content, 1080p
|
1.5%
|
1.5%
|
1.5%
|
0.3%
|
0.3%
|
0.3%
|
0.1%
|
0.1%
|
0.1%
|
RGB, Animation, 720p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
RGB, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
YUV, text & graphics w/ motion, 1080p
|
7.4%
|
5.2%
|
11.2%
|
5.6%
|
3.3%
|
8.5%
|
4.9%
|
3.1%
|
6.4%
|
YUV, text & graphics w/ motion,720p
|
2.5%
|
0.6%
|
5.8%
|
1.5%
|
0.3%
|
4.6%
|
0.8%
|
0.2%
|
2.2%
|
YUV, mixed content, 1440p
|
1.2%
|
0.5%
|
1.9%
|
0.2%
|
0.2%
|
0.3%
|
0.2%
|
0.0%
|
0.3%
|
YUV, mixed content, 1080p
|
1.8%
|
1.8%
|
1.8%
|
0.3%
|
0.3%
|
0.3%
|
0.2%
|
0.2%
|
0.2%
|
YUV, Animation, 720p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
YUV, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
Enc Time[%]
|
115%
|
103%
|
103%
|
Dec Time[%]
|
101%
|
103%
|
100%
|
BD-rate and Processing Time (Full-frame Configuration):
-
Lossy Results:
|
All Intra
|
Random Access
|
Low Delay B
|
|
G/Y
|
B/U
|
R/V
|
G/Y
|
B/U
|
R/V
|
G/Y
|
B/U
|
R/V
|
RGB, text & graphics w/ motion, 1080p
|
−3.8%
|
−3.6%
|
−3.6%
|
−2.2%
|
−1.9%
|
−2.0%
|
−1.5%
|
−1.3%
|
−1.3%
|
RGB, text & graphics w/ motion,720p
|
−1.3%
|
−1.1%
|
−1.2%
|
−1.1%
|
−0.9%
|
−0.9%
|
−0.7%
|
−0.6%
|
−0.4%
|
RGB, mixed content, 1440p
|
−1.5%
|
−1.3%
|
−1.4%
|
−1.1%
|
−0.9%
|
−1.0%
|
−0.6%
|
−0.7%
|
−0.7%
|
RGB, mixed content, 1080p
|
−2.2%
|
−1.9%
|
−2.0%
|
−1.6%
|
−1.3%
|
−1.4%
|
−0.6%
|
0.1%
|
−0.4%
|
RGB, Animation, 720p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
−0.1%
|
−0.1%
|
0.0%
|
0.0%
|
RGB, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
−0.1%
|
−0.1%
|
0.0%
|
YUV, text & graphics w/ motion, 1080p
|
−3.7%
|
−3.4%
|
−3.4%
|
−2.0%
|
−1.7%
|
−1.8%
|
−1.3%
|
−1.0%
|
−1.1%
|
YUV, text & graphics w/ motion,720p
|
−1.2%
|
−1.1%
|
−1.2%
|
−0.9%
|
−1.1%
|
−1.0%
|
−0.5%
|
−0.3%
|
−0.3%
|
YUV, mixed content, 1440p
|
−1.4%
|
−1.3%
|
−1.5%
|
−1.0%
|
−1.2%
|
−0.9%
|
−0.7%
|
−0.6%
|
−0.5%
|
YUV, mixed content, 1080p
|
−2.1%
|
−1.7%
|
−2.0%
|
−1.6%
|
−1.4%
|
−1.6%
|
−0.7%
|
−0.4%
|
−1.1%
|
YUV, Animation, 720p
|
0.0%
|
−0.1%
|
0.0%
|
0.0%
|
−0.1%
|
0.0%
|
0.1%
|
−0.4%
|
−0.2%
|
YUV, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.2%
|
0.0%
|
0.0%
|
−0.1%
|
0.0%
|
Enc Time[%]
|
117%
|
103%
|
101%
|
Dec Time[%]
|
101%
|
101%
|
103%
| -
Lossless Results:
|
All Intra
|
Random Access
|
Low Delay B
|
|
Avg.
|
Min
|
Max
|
Avg.
|
Min
|
Max
|
Avg.
|
Min
|
Max
|
RGB, text & graphics w/ motion, 1080p
|
4.6%
|
3.0%
|
7.6%
|
3.2%
|
1.9%
|
5.3%
|
2.7%
|
1.8%
|
3.7%
|
RGB, text & graphics w/ motion,720p
|
1.0%
|
0.3%
|
1.7%
|
0.5%
|
0.2%
|
1.0%
|
0.3%
|
0.2%
|
0.7%
|
RGB, mixed content, 1440p
|
0.7%
|
0.3%
|
1.0%
|
0.1%
|
0.1%
|
0.1%
|
0.1%
|
0.0%
|
0.1%
|
RGB, mixed content, 1080p
|
0.8%
|
0.8%
|
0.8%
|
0.1%
|
0.1%
|
0.1%
|
0.1%
|
0.1%
|
0.1%
|
RGB, Animation, 720p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
RGB, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
YUV, text & graphics w/ motion, 1080p
|
4.6%
|
3.3%
|
7.1%
|
3.4%
|
2.1%
|
5.2%
|
2.8%
|
2.0%
|
3.8%
|
YUV, text & graphics w/ motion,720p
|
1.1%
|
0.4%
|
1.8%
|
0.6%
|
0.2%
|
1.3%
|
0.4%
|
0.2%
|
0.9%
|
YUV, mixed content, 1440p
|
0.7%
|
0.3%
|
1.1%
|
0.1%
|
0.1%
|
0.2%
|
0.1%
|
0.0%
|
0.2%
|
YUV, mixed content, 1080p
|
0.9%
|
0.9%
|
0.9%
|
0.2%
|
0.2%
|
0.2%
|
0.1%
|
0.1%
|
0.1%
|
YUV, Animation, 720p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
YUV, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
Enc Time[%]
|
115%
|
104%
|
102%
|
Dec Time[%]
|
101%
|
101%
|
100%
|
Worst-case Memory Access Bandwidth
|
Per-pixel Memory Access Bandwidth (P)
|
Memory Patterns
Prediction Mode
|
4x1
|
8x1
|
4x2
|
8x2
|
4x4
|
8x8, Bi-prediction
|
9.375
|
11.25
|
10
|
12
|
12.5
|
4x4, IBC
|
2
|
4
|
3
|
6
|
4
|
1x4, ILC
|
4
|
8
|
6
|
12
|
8
|
Test B: Intra Line Copy with Constrained BVs (Withdrawn)
Test C: Self-matching Intra Line Copy
-
Proponent: Tongji University (JCTVC-S0194)
-
X-checker: NCTU/ITRI (JCTVC-S0233)
-
Description: In contrast to the intra line copy proposed of CE4 Test A (JCTVC-S0135), this test additionally relaxes the constraint that the reference lines overlapped with the current CU cannot be used as reference. Two prediction modes are proposed. First, when the reference line is overlapped entirely with the current CU, pixels within the overlapped area is predicted by using the predictor of the reference line. Second, when partial overlapping occurs, pixels of the non-overlapped part will be replicated to predict the pixels in the overlapped part.
-
BD-rate and Processing Time (Full-frame Configuration):
-
Lossy Results:
|
All Intra
|
Random Access
|
Low Delay B
|
|
G/Y
|
B/U
|
R/V
|
G/Y
|
B/U
|
R/V
|
G/Y
|
B/U
|
R/V
|
RGB, text & graphics w/ motion, 1080p
|
−3.8%
|
−3.5%
|
−3.6%
|
−2.2%
|
−1.9%
|
−2.0%
|
−1.4%
|
−1.3%
|
−1.3%
|
RGB, text & graphics w/ motion,720p
|
−1.4%
|
−1.1%
|
−1.2%
|
−1.0%
|
−0.8%
|
−0.8%
|
−0.5%
|
−0.4%
|
−0.4%
|
RGB, mixed content, 1440p
|
−1.5%
|
−1.4%
|
−1.4%
|
−1.1%
|
−1.0%
|
−1.0%
|
−0.7%
|
−0.6%
|
−0.7%
|
RGB, mixed content, 1080p
|
−2.2%
|
−1.9%
|
−2.0%
|
−1.6%
|
−1.3%
|
−1.5%
|
−0.8%
|
0.3%
|
−0.1%
|
RGB, Animation, 720p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
−0.1%
|
−0.1%
|
0.0%
|
−0.1%
|
RGB, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
−0.1%
|
−0.1%
|
0.0%
|
YUV, text & graphics w/ motion, 1080p
|
−3.7%
|
−3.4%
|
−3.4%
|
−2.0%
|
−1.7%
|
−1.7%
|
−1.3%
|
−1.0%
|
−1.1%
|
YUV, text & graphics w/ motion,720p
|
−1.2%
|
−1.1%
|
−1.3%
|
−1.0%
|
−1.2%
|
−1.1%
|
−0.5%
|
−0.3%
|
−0.4%
|
YUV, mixed content, 1440p
|
−1.4%
|
−1.4%
|
−1.4%
|
−1.1%
|
−1.0%
|
−0.9%
|
−0.7%
|
−0.6%
|
−0.3%
|
YUV, mixed content, 1080p
|
−2.1%
|
−1.6%
|
−1.9%
|
−1.7%
|
−1.7%
|
−1.6%
|
−0.8%
|
0.1%
|
−0.3%
|
YUV, Animation, 720p
|
0.0%
|
−0.1%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
−0.5%
|
−0.1%
|
YUV, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.1%
|
0.2%
|
0.0%
|
0.0%
|
−0.1%
|
0.0%
|
Enc Time[%]
|
117%
|
104%
|
148%
|
Dec Time[%]
|
166%
|
157%
|
171%
| -
Lossless Results:
|
All Intra
|
Random Access
|
Low Delay B
|
|
Avg.
|
Min
|
Max
|
Avg.
|
Min
|
Max
|
Avg.
|
Min
|
Max
|
RGB, text & graphics w/ motion, 1080p
|
4.5%
|
2.9%
|
7.5%
|
3.2%
|
1.8%
|
5.4%
|
2.6%
|
1.7%
|
3.8%
|
RGB, text & graphics w/ motion,720p
|
0.9%
|
0.3%
|
1.7%
|
0.4%
|
0.2%
|
1.0%
|
0.3%
|
0.1%
|
0.7%
|
RGB, mixed content, 1440p
|
0.7%
|
0.3%
|
1.0%
|
0.1%
|
0.1%
|
0.2%
|
0.1%
|
0.0%
|
0.1%
|
RGB, mixed content, 1080p
|
0.7%
|
0.7%
|
0.7%
|
0.1%
|
0.1%
|
0.1%
|
0.1%
|
0.1%
|
0.1%
|
RGB, Animation, 720p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
RGB, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
YUV, text & graphics w/ motion, 1080p
|
4.6%
|
3.2%
|
7.3%
|
3.4%
|
2.1%
|
5.4%
|
2.9%
|
2.0%
|
4.0%
|
YUV, text & graphics w/ motion,720p
|
1.1%
|
0.3%
|
1.9%
|
0.5%
|
0.2%
|
1.3%
|
0.4%
|
0.2%
|
0.9%
|
YUV, mixed content, 1440p
|
0.8%
|
0.3%
|
1.2%
|
0.1%
|
0.1%
|
0.2%
|
0.1%
|
0.0%
|
0.2%
|
YUV, mixed content, 1080p
|
0.9%
|
0.9%
|
0.9%
|
0.2%
|
0.2%
|
0.2%
|
0.1%
|
0.1%
|
0.1%
|
YUV, Animation, 720p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
YUV, camera captured, 1080p
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
0.0%
|
Enc Time[%]
|
92%
|
129%
|
130%
|
Dec Time[%]
|
136%
|
177%
|
153%
|
From the discussion:
The CE report (particularly the presentation deck includes a very detailed analysis of the complexity)
Worst case number of context coded bins per pixel increased from 7.62 to 8.25
Worst case memory bandwidth is approximately doubled in the intra case.Worst case memory bandwidth might even be higher than in inter coding with memory patterns 8x4 which were not analysed.
One expert gives the hint that the memory bandwidth with full frame access might be unsolvable, but with restricted range it might be reasonable.
Conclusion:
-
The increase in complexity from the methods investigated in CEis not justified by the compression advantage
-
Consider continuation of CE based on review of non-CE proposals.
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