Traditional fluorescence microscopy with conventional optics suffers from the trade-off between the resolution, field-of-view (FOV) and miniaturization. Computational imaging techniques overcome these limitations by leveraging miniature optics and enabling strong multiplexing. However, the shift-variant degradation caused by miniaturized lenses poses computational and memory challenges. In this work, we developed a Multi-channel FourierNet that learns the global shift variant filters in the frequency domain without any prior knowledge, providing consistent performance on a large-scale FOV. Additionally, we validate the effectiveness of our network by visualizing the correspondence between the saliency map and the truncated PSFs from different viewpoints. We demonstrate the network fueled by simulation data can perform real-time reconstruction on biological samples. We believe this innovative approach holds great promise for advancing computational imaging techniques across diverse applications.
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