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Improved Patch-based View Rendering for Focused Plenoptic Cameras with Extended Depth-of-Field
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| This paper proposes a patch-based framework to improve view rendering from light fields captured by focused plenoptic cameras with extended depth-of-field. A three-step approach is performed to minimise discontinuities across neighbouring patches and to maximise the information captured from different types of micro-lens. Firstly, the useful patch size of each micro-image is determined to limit the contribution of low light intensity regions into the rendered images. Secondly, anisotropic inpainting is applied to smooth the discontinuities between neighbouring patches. Thirdly, a multi-focus image fusion algorithm is used to efficiently combine the information captured by the different types of micro-lens comprising plenoptic cameras with extended depth-of-field. Significant improvements are obtained in the rendered views, by reducing visible discontinuities between adjacent micro-images, while at the same time increasing the average sharpness of image content by 20%, measured by the Energy of Laplacian (i.e., a focus metric), in comparison to the conventional rendering approach, which always selects the best focused lens type. | 318.35 KB | Adobe PDF |
Orientador(es)
Resumo(s)
This paper proposes a patch-based framework to improve view rendering from light fields captured by focused plenoptic cameras with extended depth-of-field. A three-step approach is performed to minimise discontinuities across neighbouring patches and to maximise the information captured from different types of micro-lens. Firstly, the useful patch size of each micro-image is determined to limit the contribution of low light intensity regions into the rendered images. Secondly, anisotropic inpainting is applied to smooth the discontinuities between neighbouring patches. Thirdly, a multi-focus image fusion algorithm is used to efficiently combine the information captured by the different types of micro-lens comprising plenoptic cameras with extended depth-of-field. Significant improvements are obtained in the rendered views, by reducing visible discontinuities between adjacent micro-images, while at the same time increasing the average sharpness of image content by 20%, measured by the Energy of Laplacian (i.e., a focus metric), in comparison to the conventional rendering approach, which always selects the best focused lens type.
Descrição
EISBN - 978-9-0827-9705-3
Date of Conference: 18-21 January 2021
Link para o documento: https://new.eurasip.org/Proceedings/Eusipco/Eusipco2020/pdfs/0000680.pdf
Date of Conference: 18-21 January 2021
Link para o documento: https://new.eurasip.org/Proceedings/Eusipco/Eusipco2020/pdfs/0000680.pdf
Palavras-chave
Patch-based rendering Focused plenoptic camera Extended depth-of-field
Contexto Educativo
Citação
J. N. Filipe, P. A. A. Assuncao, L. M. N. Tavora, R. Fonseca-Pinto, L. A. Thomaz and S. M. M. Faria, "Improved Patch-based View Rendering for Focused Plenoptic Cameras with Extended Depth-of-Field," 2020 28th European Signal Processing Conference (EUSIPCO), Amsterdam, Netherlands, 2021, pp. 680-684, doi: https://doi.org/10.23919/Eusipco47968.2020.9287562.
Editora
IEEE Canada
Licença CC
Sem licença CC