This proposal presents additional intra-prediction modes designed with the goal of improving prediction performance. (...) Sub-blocks that are coded are reconstructed and used for prediction of subsequent sub-blocks.
In our experiments, the proposed prediction modes are implemented as new 8x8 intra-prediction modes. (...) This mode is different from the existing 4x4 intra-prediction modes since only 1 prediction mode is coded (all 4 sub-blocks use the same prediction mode).
Language:English
Score: 700678.56
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https://www.itu.int/wftp3/av-a...010_07_B_Geneva/JCTVC-B025.doc
Data Source: un
Symbol Prediction techniques for SVC
2.1 Prediction of residual prediction flag
We propose a method to predict residual prediction flag from base layer or spatial neighborhood. (...) Otherwise skip coding of BLFlag.
2.3 Prediction of MotPredFlag
If prediction value from base layer and spatial motion vector prediction value is same, then we can omit MV prediction flag. (...) Decoding process of motion vector prediction
1 When spatial MV prediction and base MV prediction has the same values, then set motion vector prediction flag to 0.
2 Otherwise no change in motion vector prediction flag.
4.
Language:English
Score: 699562.16
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https://www.itu.int/wftp3/av-a...ite/2005_04_Busan/JVT-O063.doc
Data Source: un
Decoding process of SOP
2) The Second Prediction
Inputs to this process are reference first-order residue RFR and second order prediction mode.
Outputs of this process are prediction values of first-order residue, PFR.
The second prediction in SOP may take 4x4 block or 8x8 block as its prediction unit. Nine 4x4 intra prediction modes of H.264/AVC Baseline profile and nine 8x8 intra prediction modes of H.264/AVC High profile can be used as second prediction modes.
Language:English
Score: 699445.3
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https://www.itu.int/wftp3/av-a..._07_B_Geneva/JCTVC-B079_r1.doc
Data Source: un
It achieves the same coding efficiency as angular prediction but with reduced complexity.
1 Introduction
Several different methods for generating predicted samples in intra prediction were incorporated into the TMuC draft [1]. (...) In the TMuC software, revision 21, the following intra prediction methods have been integrated:
· ADI: Arbitrary Directional Intra
· ANG: Angular Prediction for Intra
· CIP: Combined Intra Prediction
· PPI: Planar Prediction for Intra
An experiment was performed to evaluate the performance of these methods.
(...) In the prediction process, only samples from the main array are used for prediction when the angle value is positive.
Language:English
Score: 699370.7
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https://www.itu.int/wftp3/av-a...010_07_B_Geneva/JCTVC-B093.doc
Data Source: un
The prediction set, which is the collection of applicable intra prediction modes for certain PU (prediction unit), varies depending on the size of PU. (...) (a) Derivation of MPM is done using the intermediate prediction set which consists of only nine intra prediction modes. (...) Each intra prediction mode in PM is converted into the one included in the prediction set and having similar property.
Language:English
Score: 698804.35
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https://www.itu.int/wftp3/av-a...010_07_B_Geneva/JCTVC-B063.doc
Data Source: un
All 4x4, 8x8 and 16x16 intra prediction H264/AVC modes compete with new intra prediction modes.
(...) Class
KTA2.7 + new intra prediction
KTA2.7
E
22
1
D
12
1
C
14
1
B1+B2
18
1
A
19
1
Figure 8 : Relative complexity between KTA2.7 + new intra prediction and KTA2.7
4 Ongoing and future works
This document has presented a new intra prediction method based on a weighted template matching. It has led to a prediction based on a linear combination of blocks.
Language:English
Score: 698683.64
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https://www.itu.int/wftp3/av-a..._07_B_Geneva/JCTVC-B078_r1.doc
Data Source: un
Only the shaded area of C can be directly predicted from U with the diagonal prediction mode 1. Extended prediction including UR predicts the rest of C.
For extended prediction we include UR for mode 1 and similarly DL for mode 5.
3 Block Scan Orders
The TML block scan order for 4x4 blocks in Intra prediction is depicted in Figure 3. (...) They compare TML-4 with extended prediction and with the combination of extended prediction and adapted block orders.
Language:English
Score: 698525.7
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https://www.itu.int/wftp3/av-a...video-site/0008_Por/q15k41.doc
Data Source: un
., LTD.
www.huawei.com
ChangcaiChangcaiChangcaiChangcaiChangcaiChangcaiChangcaiChangcai Lai, Yongbing LinLai, Yongbing LinLai, Yongbing LinLai, Yongbing LinLai, Yongbing LinLai, Yongbing LinLai, Yongbing LinLai, Yongbing Lin
New intra prediction using New intra prediction using New intra prediction using New intra prediction using New intra prediction using New intra prediction using New intra prediction using New intra prediction using the correlation between the correlation between the correlation between the correlation between the correlation between the correlation between the correlation between the correlation between pixels and linespixels and linespixels and linespixels and linespixels and linespixels and linespixels and linespixels and lines
HUAWEI TECHNOLOGIES CO., LTD.
(...) Line-based intra prediction (LIP)
Directional prediction of 1x16 and 2x8 partitions
1x16, 16x1, 2x8 and 8x2 partitions are designed
For each partition, nine directional prediction are used similar to
intra prediction in H.264/AVC
DCT of size 1x16, 16x1, 2x8 or 8x2 are applied
HUAWEI TECHNOLOGIES CO., LTD.
(...) Page 6
Intra prediction and interpolation in RIP
1. Block I0 is firstly encoded with conversional block-based intra prediction. 9 intra
prediction modes
2.
Language:English
Score: 698469.73
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https://www.itu.int/wftp3/av-a...10_04_A_Dresden/JCTVC-A025.pdf
Data Source: un
WBP
WBP (Weighted Bidirectional Prediction) combines two AVC intra-frame predictions results by a weighted sum according to the distance between predicted pixel and pixel(s) used for prediction. By combining two predictions, it is expected to predict multi-directional texture and reduce the coding noise of the reference pixels. (...) Annex
5 Tool description
5.1 Bi-directional Intra Prediction (BIP)
Bi-directional Intra Prediction (BIP) is a spatial prediction scheme for intra coding.
Language:English
Score: 698190.14
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https://www.itu.int/wftp3/av-a...010_07_B_Geneva/JCTVC-B042.doc
Data Source: un
Description of video coding
technology proposal by JVC
JCTVC-A108
Outline
Overview of Proposed Codec
Proposed Tools
Motion Representation GTP: Geometric Transform Prediction
DBBD: Decoder-side Block Boundary Decision Motion
Compensation
RMC: Refinement Motion Compensation using Decoder-side
Motion Estimation
Intra-frame Prediction AC Prediction using DC and intra prediction mode
Experimental Results
Conclusion
Overview of Proposed Codec
GTP: Geometric Transform Prediction
DBBD: Decoder-side Block Boundary Decision Motion Compensation
RMC: Refinement Motion Compensation using Decoder-side Motion Estimation
Motion representation Intra-frame prediction
＋
from MPEG-4 AVC tools
（JM16.2 based）
from VCEG tool
(KTA2.6r1 based） New proposed tools
Entropy
decoding Q
-1Input
bitstream T
-1
Mode
selection
＋
Deblocking
filter
QALF
Picture
buffer
Conventional
method
RMC
GTP
DBBD
Conventional
method
AC prediction
using DC and
intra prediction
mode
Output picture Reference
memory
TargetPrediction
Reference
Conventional Inter Prediction
Translation
1 MV is coded/decoded.
(...) RMC
encode pictureref 1 ref 2
mvL0 mvL1
encode picture ref 1
(reference for anchor) ref 2
(anchor)
mvL0 mvL1
mvCol
mvL0
Decoder-side ME
mvL1
encode pictureref 1 ref 2
send mvL0 only
effective for “small spatial or
temporal correlation”
Conventional MC
RMC technique
Temporal Direct
send no vector
effective for “high spatial and temporal correlation”
Bi-predictive
send mvL0 and mvL1
no influence for temporal correlation
average
(DC)
AC-pred signal
current block
ref.
predicted
value
predictive direction
(intra pred. mode)
final residual
intra prediction
final coefficients
Concept of
AC prediction using DC and intra prediction mode
AVC-based intra pred. is performed at first.
AC-pred. signal is obtained from DC and intra pred. mode. (...) Conclusion
Proposed Techniques Motion Representation
GTP: Geometric Transform Prediction
DBBD: Decoder-side Block Boundary Decision Motion
Compensation
RMC: Refinement Motion Compensation using Decoder-side
Motion Estimation
Intra-frame Prediction
AC Prediction using DC and intra prediction mode
JM16.2-based.
Bitrate Reduction average 9.27% for C1 compared with alpha anchor.
average 3.18% for C2 compared with beta anchor.
average 26.49% for C2 compared with gamma anchor.
Language:English
Score: 698124.7
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https://www.itu.int/wftp3/av-a...10_04_A_Dresden/JCTVC-A108.pdf
Data Source: un
