AQF: Assessing the Quality of Hyperspectral Reconstruction with a Learnable Metric

This paper proposes a learnable metric to measure the reconstruction quality of hyperspectral images obtained by computational hyperspectral imaging. Computational hyperspectral imaging aims to obtain low-cost hyperspectral images through consumer camera. While many hyperspectral reconstruction models have been developed for this purpose, conventional image and spectral quality metrics are insufficient to measure the scientific value of the reconstructed HSI cube. This paper proposes an adaptive quality fusion metric (AQF), adaptively aggregating the quality measures from point-wise, spatial-wise and spectral-wise aspects to assess the scientific value preserved by the reconstructed HSI. The proposed AQF metric uses weight parameters generated by a modified hypernetwork to determine the contribution for the three aspects given paired of groundtruth HSI and reconstructed HSI. Experimental results show its compatibility with existing metrics while accurately measuring the scientific information retained by the reconstructed HSI for hyperspectral applications.