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Diffusion Probabilistic Models for Compressive SAR Imaging

2025-04-23 · Odysseas Pappas, Perla Mayo, Andrew Austin, Alin Achim

Compressed sensing Synthetic Aperture Radar (SAR) image formation, formulated as an inverse problem and solved with traditional iterative optimization methods can be very computationally expensive. We investigate the use of denoising diffusion probabilistic models for compressive SAR image reconstruction, where the diffusion model is guided by a poor initial reconstruction from sub-sampled data obtained via standard imaging methods. We present results on real SAR data and compare our compressively sampled diffusion model reconstruction with standard image reconstruction methods utilizing the full data set, demonstrating the potential performance gains in imaging quality.

📄 PDF Abstract BibTeX arXiv:2504.17053

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compressed sensingDenoisingImage Reconstruction

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Diffusion Diffusion models generate samples by gradually removing noise from a signal, and their training objective can be expressed as a reweighted variational lower-bound…

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