The Light Field Attachment: Turning a DSLR into a Light Field Camera Using a Low Budget Camera Ring

Abstract
We propose a concept for a lens attachment that turns a standard DSLR camera and lens into a light field camera. The attachment consists of 8 low-resolution, low-quality side cameras arranged around the central high-quality SLR lens. Unlike most existing light field camera architectures, this design provides a high-quality 2D image mode, while simultaneously enabling a new high-quality light field mode with a large camera baseline but little added weight, cost, or bulk compared with the base DSLR camera. From an algorithmic point of view, the high-quality light field mode is made possible by a new light field super-resolution method that first improves the spatial resolution and image quality of the side cameras and then interpolates additional views as needed. At the heart of this process is a super-resolution method that we call iterative Patch- And Depth-based Synthesis (iPADS), which combines patch-based and depth-based synthesis in a novel fashion. Experimental results obtained for both real captured data and synthetic data confirm that our method achieves substantial improvements in super-resolution for side-view images as well as the high-quality and view-coherent rendering of dense and high-resolution light fields.

Citation
Wang Y, Liu Y, Heidrich W, Dai Q (2016) The Light Field Attachment: Turning a DSLR into a Light Field Camera Using a Low Budget Camera Ring. IEEE Transactions on Visualization and Computer Graphics: 1–1. Available: http://dx.doi.org/10.1109/tvcg.2016.2628743.

Acknowledgements
This work was supported by the National key foundation for exploring scientific instrument No.2013YQ140517, the National NSF of China grant No.61522111 and No.61531014.

Publisher
Institute of Electrical and Electronics Engineers (IEEE)

Journal
IEEE Transactions on Visualization and Computer Graphics

DOI
10.1109/tvcg.2016.2628743

Additional Links
http://ieeexplore.ieee.org/document/7744676/

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