Sub-pixel Layout for Super-Resolution with Images in the Octic Group

• Main Authors: Shi, Boxin (Contributor), Zhao, Hang (Contributor), Ben-Ezra, Moshe (Contributor), Yeung, Sai-Kit (Author), Fernandez-Cull, Christy (Contributor), Shepard, R. Hamilton (Contributor), Barsi, Christopher (Contributor), Raskar, Ramesh (Contributor)
• Other Authors: Lincoln Laboratory (Contributor), Massachusetts Institute of Technology. Media Laboratory (Contributor), Program in Media Arts and Sciences (Massachusetts Institute of Technology) (Contributor)
• Format: Article
• Language: English
• Published: Springer-Verlag Berlin Heidelberg, 2015-01-13T20:59:35Z.
• Subjects: Article
• Online Access: Get fulltext

13th European Conference, Zurich, Switzerland, September 6-12, 2014, Proceedings, Part I
This paper presents a novel super-resolution framework by exploring the properties of non-conventional pixel layouts and shapes. We show that recording multiple images, transformed in the octic group, with a sensor of asymmetric sub-pixel layout increases the spatial sampling compared to a conventional sensor with a rectilinear grid of pixels and hence increases the image resolution. We further prove a theoretical bound for achieving well-posed super-resolution with a designated magnification factor w.r.t. the number and distribution of sub-pixels. We also propose strategies for selecting good sub-pixel layouts and effective super-resolution algorithms for our setup. The experimental results validate the proposed theory and solution, which have the potential to guide the future CCD layout design with super-resolution functionality.
United States. Air Force (Assistant Secretary of Defense for Research & Engineering Contract #FA8721-05-C-0002)
SUTD-MIT International Design Centre (Joint Postdoctoral Programme)
Singapore University of Technology and Design (SUTD StartUp Grant ISTD 2011 016)
Singapore. Ministry of Education (MOE Academic Research Fund MOE2013-T2-1-159)