Deep demosaicking for multispectral filter arrays

We propose a novel demosaicking method for multispectral filter arrays based on a deep convolutional neural network. The proposed method first interpolates mosaicked multispectral images utilizing a bilinear approach, then applies a residual network to initial demosaicked images. The residual network consists of various three-dimensional convolutional layers and a rectified linear unit for describing the features of a multispectral data cube. Experimental results reveal that the proposed method outperforms conventional demosaicking methods.