12 January 2018 Hyperspectral light field image denoising
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Abstract
Hyperspectral light field (HSLF) images with enriched spectral and angular information provide better representation of real scenes than conventional 2D images. In this paper, we propose a novel denoising method for HSLF images. The proposed method consists of two main steps. First, we generalize the intrinsic tensor sparsity (ITS) measure previously used for 3D hyperspectral image denoising to the 5D HSLF, by using the global correlation along the spectral dimension and the nonlocal similarity across the spatial and angular dimensions. Second, we further exploit the spatial-angular correlation by integrating light field super-resolution (SR) into the denoising process. In this way, the 5D HSLF can be better recovered. Experimental results validate the superior performance of the proposed method in terms of both objective and subjective quality on a self-collected HSLF dataset, in comparison with directly applying the state-of-the-art denoising methods.
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Yun Liu, Yun Liu, Na Qi, Na Qi, Zhen Cheng, Zhen Cheng, Dong Liu, Dong Liu, Zhiwei Xiong, Zhiwei Xiong, "Hyperspectral light field image denoising", Proc. SPIE 10620, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology, 106201E (12 January 2018); doi: 10.1117/12.2295065; https://doi.org/10.1117/12.2295065
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