Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10071/14576
Autoria: | Conti, C. Nunes, P. Soares, L. D. |
Data: | 2018 |
Título próprio: | Light field image coding with jointly estimated self-similarity bi-prediction |
Volume: | 60 |
Paginação: | 144 - 159 |
ISSN: | 0923-5965 |
DOI (Digital Object Identifier): | 10.1016/j.image.2017.10.006 |
Palavras-chave: | Light field Plenoptic Holoscopic Integral imaging Image coding HEVC Self-similarity Bi-prediction |
Resumo: | This paper proposes an efficient light field image coding (LFC) solution based on High Efficiency Video Coding (HEVC) and a novel Bi-prediction Self-Similarity (Bi-SS) estimation and compensation approach to efficiently explore the inherent non-local spatial correlation of this type of content, where two predictor blocks are jointly estimated from the same search window by using a locally optimal rate constrained algorithm. Moreover, a theoretical analysis of the proposed Bi-SS prediction is also presented, which shows that other non-local spatial prediction schemes proposed in literature are suboptimal in terms of Rate-Distortion (RD) performance and, for this reason, can be considered as restricted cases of the jointly estimated Bi-SS solution proposed here. These theoretical insights are shown to be consistent with the presented experimental results, and demonstrate that the proposed LFC scheme is able to outperform the benchmark solutions with significant gains with respect to HEVC (with up to 61.1% of bit savings) and other state-of-the-art LFC solutions in the literature (with up 16.9% of bit savings). |
Arbitragem científica: | yes |
Acesso: | Acesso Aberto |
Aparece nas coleções: | IT-RI - Artigos em revistas científicas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
2017_SP-ImComm_FinalPaper_v2.0.pdf | Pós-print | 2,78 MB | Adobe PDF | Ver/Abrir |
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.