Filipe, Jose N.Assuncao, Pedro A. A.Tavora, Luis M. N.Fonseca-Pinto, RuiThomaz, Lucas A.Faria, Sergio M. M.2026-04-092026-04-092021-01J. 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/Eusipco47968.2020.9287562.978-1-7281-5001-7978-9-0827-9705-32219-5491http://hdl.handle.net/10400.8/16080EISBN - 978-9-0827-9705-3Date of Conference: 18-21 January 2021Link para o documento: https://new.eurasip.org/Proceedings/Eusipco/Eusipco2020/pdfs/0000680.pdfThis 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.engPatch-based renderingFocused plenoptic cameraExtended depth-of-fieldconference paper10.23919/eusipco47968.2020.92875622076-1465