期刊
IEEE SIGNAL PROCESSING LETTERS
卷 26, 期 1, 页码 204-208出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSP.2018.2885213
关键词
Bokeh; camera array; depth of field (DoF); light field (LF); refocusing; superresolution (SR)
资金
- National Natural Science Foundation of China [61401474, 61602499, 61471371]
- Hunan Provincial National Science Foundation [2016JJ3025]
- National Postdoctoral Program for Innovative Talents [BX201600172]
- China Postdoctoral Science Foundation
Camera arrays provide spatial and angular information within a single snapshot. With refocusing methods, focal planes can be altered after exposure. In this letter, we propose a light field refocusing method to improve the imaging quality of camera arrays. In our method, the disparity is first estimated. Then, the unfocused region (bokeh) is rendered by using a depth-based anisotropic filter. Finally, the refocused image is produced by a reconstruction-based superresolution approach where the bokeh image is used as a regularization term. Our method can selectively refocus images with focused region being superresolved and bokeh being esthetically rendered. Our method also enables postadjustment of depth of field. We conduct experiments on both public and self-developed datasets. Our method achieves superior visual performance with acceptable computational cost as compared to the other state-of-the-art methods.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据