Multispectral demosaicking algorithm based on inter-channel correlation

Conventional RGB image acquisition employs an image capturing system that utilizes color filter array (CFA) technology; however, it is limited in its ability to represent visible colors. Multispectral imaging based on filter array architecture is required for general image capturing because of its exquisite color representation system. However, it has several issues associated with spatial and spectral resolution. In this paper, we propose a new demosaicking method that improves reconstructed image quality by considering inter-channel correlation. Our proposed method strengthens the cross-correlation of demosaicked channels by repeating interpolations. Experimental results show that our proposed method generates better quality reconstructed images than conventional methods.