Hyperspectral Image Reconstruction Using a Deep Spatial-Spectral Prior

Lizhi Wang, Chen Sun, Ying Fu, Min H. Kim, Hua Huang; The IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2019, pp. 8032-8041

Abstract


Regularization is a fundamental technique to solve an ill-posed optimization problem robustly and is essential to reconstruct compressive hyperspectral images. Various hand-crafted priors have been employed as a regularizer but are often insufficient to handle the wide variety of spectra of natural hyperspectral images, resulting in poor reconstruction quality. Moreover, the prior-regularized optimization requires manual tweaking of its weight parameters to achieve a balance between the spatial and spectral fidelity of result images. In this paper, we present a novel hyperspectral image reconstruction algorithm that substitutes the traditional hand-crafted prior with a data-driven prior, based on an optimization-inspired network. Our method consists of two main parts: First, we learn a novel data-driven prior that regularizes the optimization problem with a goal to boost the spatial-spectral fidelity. Our data-driven prior learns both local coherence and dynamic characteristics of natural hyperspectral images. Second, we combine our regularizer with an optimization-inspired network to overcome the heavy computation problem in the traditional iterative optimization methods. We learn the complete parameters in the network through end-to-end training, enabling robust performance with high accuracy. Extensive simulation and hardware experiments validate the superior performance of our method over the state-of-the-art methods.

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[bibtex]
@InProceedings{Wang_2019_CVPR,
author = {Wang, Lizhi and Sun, Chen and Fu, Ying and Kim, Min H. and Huang, Hua},
title = {Hyperspectral Image Reconstruction Using a Deep Spatial-Spectral Prior},
booktitle = {The IEEE Conference on Computer Vision and Pattern Recognition (CVPR)},
month = {June},
year = {2019}
}