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High spectral and high spatial resolution imaging is necessary in optical imaging. However, the filter wheel imaging system which is composed of band pass filters obtains discrete spectral information, with high spatial resolution, but low spectral resolution. This paper proposes a novel high spectral resolution imaging approach based on dual-camera system with filter wheel, to reconstruct high spectral and high spatial resolution images from a limited number of spectral images. The proposed architecture comprises three key components: design of dual-camera system with filter wheel (DCS-FW), establish the mapping relationship between RGB image and spectral images, achieve spectrum reconstruction by interpolation. The proposed system combines useful information from both cameras. And the conservation of energy is used to achieve the mapping relationship between RGB image and spectral images, which we used to establish interpolating compensation computational reconstruction. Both simulation and experiments are adopted to verify the validness of our approach, the results show that our method achieves an accurate and robust high spectral resolution reconstruction while maintaining spatial resolution.

High Spectral Resolution Imaging Based on Dual-Camera System With Filter Wheel