Abstract
Light field (LF) has proven to be promising in immersive representation of the real world. However, a major limitation of micro-lens array based LF camera is the low spatial resolution, due to the inherent trade-off between angular and spatial dimensions. In this paper, we propose a framework to show that a single high-resolution (HR) RGB image effectively improves the performance of LF spatial super-resolution. We adopt an end-to-end convolutional neural network, which takes a low-resolution (LR) light field image (LFI) and a single HR center view as inputs. The LFI provides the information about LF structure in angular domain, while the HR center view provides more details in spatial domain. Experimental results on 57 test LFIs with various challenging natural scenes demonstrate that our algorithm outperforms current state-of-the-art methods.
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