Details
| Original language | English |
|---|---|
| Article number | e11 |
| Journal | APSIPA Transactions on Signal and Information Processing |
| Volume | 7 |
| Issue number | 1 |
| Publication status | Published - 17 Oct 2018 |
Abstract
Intra coding is an essential part of all video coding algorithms and applications. Additionally, intra coding algorithms are predestined for an efficient still image coding. To overcome limitations in existing intra coding algorithms (such as linear directional extrapolation, only one direction per block, small reference area), we propose non-linear Contour-based Multidirectional Intra Coding. This coding mode is based on four different non-linear contour models, on the connection of intersecting contours and on a boundary recall-based contour model selection algorithm. The different contour models address robustness against outliers for the detected contours and evasive curvature changes. Additionally, the information for the prediction is derived from already reconstructed pixels in neighboring blocks. The achieved coding efficiency is superior to those of related works from the literature. Compared with the closest related work, BD rate gains of 2.16% are achieved on average.
Keywords
- HEVC, Image Coding, Intra coding, Prediction, Video coding
ASJC Scopus subject areas
- Computer Science(all)
- Signal Processing
- Computer Science(all)
- Information Systems
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In: APSIPA Transactions on Signal and Information Processing, Vol. 7, No. 1, e11, 17.10.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Non-linear contour-based multidirectional intra coding
AU - Laude, Thorsten
AU - Tumbrägel, Jan
AU - Munderloh, Marco
AU - Ostermann, Jörn
PY - 2018/10/17
Y1 - 2018/10/17
N2 - Intra coding is an essential part of all video coding algorithms and applications. Additionally, intra coding algorithms are predestined for an efficient still image coding. To overcome limitations in existing intra coding algorithms (such as linear directional extrapolation, only one direction per block, small reference area), we propose non-linear Contour-based Multidirectional Intra Coding. This coding mode is based on four different non-linear contour models, on the connection of intersecting contours and on a boundary recall-based contour model selection algorithm. The different contour models address robustness against outliers for the detected contours and evasive curvature changes. Additionally, the information for the prediction is derived from already reconstructed pixels in neighboring blocks. The achieved coding efficiency is superior to those of related works from the literature. Compared with the closest related work, BD rate gains of 2.16% are achieved on average.
AB - Intra coding is an essential part of all video coding algorithms and applications. Additionally, intra coding algorithms are predestined for an efficient still image coding. To overcome limitations in existing intra coding algorithms (such as linear directional extrapolation, only one direction per block, small reference area), we propose non-linear Contour-based Multidirectional Intra Coding. This coding mode is based on four different non-linear contour models, on the connection of intersecting contours and on a boundary recall-based contour model selection algorithm. The different contour models address robustness against outliers for the detected contours and evasive curvature changes. Additionally, the information for the prediction is derived from already reconstructed pixels in neighboring blocks. The achieved coding efficiency is superior to those of related works from the literature. Compared with the closest related work, BD rate gains of 2.16% are achieved on average.
KW - HEVC
KW - Image Coding
KW - Intra coding
KW - Prediction
KW - Video coding
UR - http://www.scopus.com/inward/record.url?scp=85055106687&partnerID=8YFLogxK
U2 - 10.1017/ATSIP.2018.14
DO - 10.1017/ATSIP.2018.14
M3 - Article
AN - SCOPUS:85055106687
VL - 7
JO - APSIPA Transactions on Signal and Information Processing
JF - APSIPA Transactions on Signal and Information Processing
IS - 1
M1 - e11
ER -