Keywords: Machine Learning/Artificial Intelligence, Image ReconstructionDeep learning-based image reconstruction has two known practical issues: (a) sensitivity to data perturbations, and (b) poor generalization. An approach to addressing these issues is to use classical signal models to assist/constrain deep learning. This paper performs a systematic analysis of the role of signal models in model-assisted deep learning-based reconstruction. Our results show that signal models (e.g., subspace model or sparse model) can substantially reduce the sensitivity of deep learning-based reconstruction to data perturbations; they can also help improve generalization capability.
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