arXiv Computer Vision By Linfeng Ye, Zhixiang Chi, Shayan Mohajer Hamidi, En-hui Yang, Konstantinos N. Plataniotis

CARA: Collision-Aware Resolution Adaptation for Multiresolution Hash Encoding Based Image Fitting

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CARA (Collision-Aware Resolution Adaptation) is a technique that dynamically assigns resolution levels in multiresolution hash encodings to balance information load across hash tables, thereby reducing hash collisions and improving parameter efficiency. It also introduces an invertible pixel‑shuffle transform to redistribute spatial information and lower hash load factors without enlarging tables. Experiments on Kodak images, gigapixel natural images, and a newly curated uncompressed whole‑slide image dataset show that CARA consistently enhances the fidelity‑parameter trade‑off, matching state‑of‑the‑art performance with only 27.76% of the parameters and achieving up to 6.11 dB PSNR improvement at comparable parameter counts.

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