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Haofan Wu, Theodoros N. Arvanitis and Le Zhang are with the School of Engineering, College of Engineering and Physical Sciences, University of Birmingham, Birmingham, United Kingdom. Le Zhang is also with William Harvey Research Institute, NIHR Barts Biomedical Research Centre, Queen Mary University London, London, United Kingdom.Nay Aung, Steffen E. Petersen are with William Harvey Research Institute, NIHR Barts Biomedical Research Centre, Queen Mary University London, London, United Kingdom, and Barts Heart Centre, St Bartholomew鈥檚 Hospital, Barts Health NHS Trust, West Smithfield, London, United Kingdom.Joao A. C. Lima is with Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.Corresponding Author: Le Zhang (l.zhang.16@bham.ac.uk)
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Latent diffusion models can be significantly improved by matching the power spectral density between images and latents, unifying previous observations of over-noisy or over-smoothed latents under a single "Spectrum Matching Hypothesis."
