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Selective motion vector redundancies for improved error resilience in HEVC
This paper addresses the problem caused by motion vector coding dependencies on the error resilience performance of the emergent High Efficiency Video Coding (HEVC) standard. We propose a method based on the prediction dependency of motion vectors (MV) to select the most relevant ones for redundant...
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| Main Authors: | , , , , , |
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| Format: | Default Conference proceeding |
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2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/2134/22762 |
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| _version_ | 1818172111305310208 |
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| author | Joao Carreira Erhan Ekmekcioglu Ahmet Kondoz Pedro A.A. Assuncao Sergio M.M. Faria Demuni V.S.X. De Silva |
| author_facet | Joao Carreira Erhan Ekmekcioglu Ahmet Kondoz Pedro A.A. Assuncao Sergio M.M. Faria Demuni V.S.X. De Silva |
| author_sort | Joao Carreira (1383906) |
| collection | Figshare |
| description | This paper addresses the problem caused by motion vector coding dependencies on the error resilience performance of the emergent High Efficiency Video Coding (HEVC) standard. We propose a method based on the prediction dependency of motion vectors (MV) to select the most relevant ones for redundant coding with reduced overhead. The spatial dependencies are analysed in the encoder to prioritise the MVs that should be selected for redundancy, based on the number of subsequent dependent coding units. Then, a subset of prioritised MVs is transmitted as redundancy (referred to as side information in the paper), to reduce the use and propagation of mismatched MV predictions in case of transmission errors or data loss. The simulation results show that the proposed MV selection method can effectively identify the most relevant motion field, achieving improved error robustness with a reduced redundancy overhead. Exploiting only 30% of the generated MVs for redundancy, average quality gains of up to 1 dB are achieved compared to a uniform MV selection scheme, and up to 2 dB compared to the original HEVC standard with no redundant encoded information. |
| format | Default Conference proceeding |
| id | rr-article-9465500 |
| institution | Loughborough University |
| publishDate | 2014 |
| record_format | Figshare |
| spelling | rr-article-94655002014-01-01T00:00:00Z Selective motion vector redundancies for improved error resilience in HEVC Joao Carreira (1383906) Erhan Ekmekcioglu (1383846) Ahmet Kondoz (1384131) Pedro A.A. Assuncao (7185191) Sergio M.M. Faria (7185194) Demuni V.S.X. De Silva (7185881) HEVC Error resilience Motion vectors redundancy This paper addresses the problem caused by motion vector coding dependencies on the error resilience performance of the emergent High Efficiency Video Coding (HEVC) standard. We propose a method based on the prediction dependency of motion vectors (MV) to select the most relevant ones for redundant coding with reduced overhead. The spatial dependencies are analysed in the encoder to prioritise the MVs that should be selected for redundancy, based on the number of subsequent dependent coding units. Then, a subset of prioritised MVs is transmitted as redundancy (referred to as side information in the paper), to reduce the use and propagation of mismatched MV predictions in case of transmission errors or data loss. The simulation results show that the proposed MV selection method can effectively identify the most relevant motion field, achieving improved error robustness with a reduced redundancy overhead. Exploiting only 30% of the generated MVs for redundancy, average quality gains of up to 1 dB are achieved compared to a uniform MV selection scheme, and up to 2 dB compared to the original HEVC standard with no redundant encoded information. 2014-01-01T00:00:00Z Text Conference contribution 2134/22762 https://figshare.com/articles/conference_contribution/Selective_motion_vector_redundancies_for_improved_error_resilience_in_HEVC/9465500 CC BY-NC-ND 4.0 |
| spellingShingle | HEVC Error resilience Motion vectors redundancy Joao Carreira Erhan Ekmekcioglu Ahmet Kondoz Pedro A.A. Assuncao Sergio M.M. Faria Demuni V.S.X. De Silva Selective motion vector redundancies for improved error resilience in HEVC |
| title | Selective motion vector redundancies for improved error resilience in HEVC |
| title_full | Selective motion vector redundancies for improved error resilience in HEVC |
| title_fullStr | Selective motion vector redundancies for improved error resilience in HEVC |
| title_full_unstemmed | Selective motion vector redundancies for improved error resilience in HEVC |
| title_short | Selective motion vector redundancies for improved error resilience in HEVC |
| title_sort | selective motion vector redundancies for improved error resilience in hevc |
| topic | HEVC Error resilience Motion vectors redundancy |
| url | https://hdl.handle.net/2134/22762 |