Which side of the focal plane are you on?

Sellent, Anita; Favaro, Paolo (2014). Which side of the focal plane are you on? In: 2014 IEEE International Conference on Computational Photography (ICCP) (pp. 1-8). IEEE 10.1109/ICCPHOT.2014.6831818

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Defocus blur is an indicator for the depth structure of a scene. However, given a single input image from a conventional camera one cannot distinguish between blurred objects lying in front or behind the focal plane, as they may be subject to exactly the same amount of blur. In this paper we address this limitation by exploiting coded apertures. Previous work in this area focuses on setups where the scene is placed either entirely in front or entirely behind the focal plane. We demonstrate that asymmetric apertures result in unique blurs for all distances from the camera. To exploit asymmetric apertures we propose an algorithm that can unambiguously estimate scene depth and texture from a single input image. One of the main advantages of our method is that, within the same depth range, we can work with less blurred data than in other methods. The technique is tested on both synthetic and real images.

Item Type: Conference or Workshop Item (Paper)
Division/Institute: 08 Faculty of Science > Institute of Computer Science (INF)
UniBE Contributor: Sellent, Anita and Favaro, Paolo
Subjects: 000 Computer science, knowledge & systems
500 Science > 510 Mathematics
Publisher: IEEE
Language: English
Submitter: Paolo Favaro
Date Deposited: 27 Apr 2015 15:38
Last Modified: 05 Oct 2015 09:20
Publisher DOI: 10.1109/ICCPHOT.2014.6831818
BORIS DOI: 10.7892/boris.67331
URI: http://boris.unibe.ch/id/eprint/67331

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