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STEMPix: A Phase-Transition-Material-Based Pixel Sensor for Resolving Edge-Movement Direction

2026-09-07 12:00 Science 🔥 40.2 heat score
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On September 7, 2026, the research paper STEMPix was published on arXiv cs.CV. It introduced a new type of pixel sensor based on Phase-Transition-Material. This sensor aims to address the limitations of traditional imaging techniques in capturing the direction of edge movements, using the physical properties of Phase-Transition-Material to more accurately determine the direction of object edges.

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A arXiv cs.CV en 2026-09-07 12:00

STEMPix: A Phase-Transition-Material-Based Pixel Sensor for Resolving Edge-Movement Direction

本文提出一种基于相变材料的像素传感器(STEMPix),用于在 CMOS 兼容图像传感器阵列内生成紧凑的方向感知边缘运动信息。该设计针对局部边界运动比全帧强度重建更重要的专用传感应用,通过结合像素级时间变化信息与邻域像素空间边缘信息,生成 3 位本地边缘方向码(LEDC),替代向外部传输全多比特帧。架构采用两层组织,将光电二极管层与计算层分离以保留光收集面积并容纳阵列内处理电路。经 HSPICE 瞬态仿真评估,实现水平栅格间距 1.73 μm、垂直栅格间距 2.36 μm、几何填充因子 95.47%,平均活动切换能耗为每次 LEDC 操作 0.465 fJ。该方案支持全局快门捕获和动态阈值功能,表明 STEMPix 可为边缘运动感知传感系统提供紧凑且可扩展的前端表示。