SnapPix: Efficient-Coding--Inspired In-Sensor Compression for Edge Vision

Weikai Lin, Tianrui Ma, Adith Boloor, Yu Feng, Ruofan Xing, Xuan Zhang, Yuhao Zhu·April 06, 2025

Summary

SNAPPIX is an in-sensor compression system for edge vision, enhancing energy efficiency in weak compute scenarios. It uses coded exposure to compress raw pixels, learning an exposure pattern based on efficient coding theory. SNAPPIX co-designs the downstream vision model, proposing hardware augmentations for lightweight in-sensor compression. Evaluated on action recognition and video reconstruction, SNAPPIX outperforms state-of-the-art methods, reducing energy consumption by up to 15.4 times.

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