STEMPix: A Phase-Transition-Material-Based Pixel Sensor for Resolving Edge-Movement Direction
This paper proposes a spatio-temporal edge-movement direction pixel (STEMPix) for generating compact direction-aware edge movement information inside a CMOS-compatible image sensor array. The proposed design targets specialized sensing applications where local boundary movement is more important than full-frame intensity reconstruction. Instead of transferring full multi-bit frames for external processing, STEMPix generates a 3-bit local edge direction code (LEDC) by combining pixel-level temporal change information with neighboring-pixel spatial edge information. We design the architecture using a two-tier organization, where the photodiode layer is separated from the computation layer t...
| Authors | Md Rahatul Islam Udoy, Sumeet Kumar Gupta, Deep Jariwala et al. |
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| Primary category | cs.ET |
| Published | 3 September 2026 |
| Last updated at source | 3 September 2026 |
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