Author

Federico Putamorsi

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Preprint Sep 2026

SPARK: Input-Conditioned Sparse Activation Modulation for Frozen DiT-based Super-Resolution

SPARK is introduced, a lightweight input-conditioned controller that predicts bounded per-channel affine transformations for only the selected channels, while keeping the SR backbone and VAE frozen.

Federico Putamorsi, Leonardo Zini, M. Cornia et al. · 0 citations