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320 × 240 SPAD 直接飞行时间图像传感器和摄像机,基于像素内相关性和开关电容器平均值

Maarten Kuijk¹, Ayman Morsy¹, Thomas Lapauw¹

¹ETRO.RDI, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.

Sensors (Basel, Switzerland)

|November 13, 2025

概括

相关联辅助直飞时间 (CA-dToF) 成像现在可以在320x240 SPAD传感器上使用. 这种新的方法实现了高达6米的亚厘米精度深度传感,克服了以前的局限性.

科学领域:

光子学和传感技术的技术.
数字成像系统数字成像系统

背景情况:

传统的飞行时间传感器在数据处理和通信方面遇到瓶.
像素内处理对于SPAD阵列的高效深度传感至关重要.

研究的目的:

在大格式的SPAD传感器上演示相关联辅助直飞时间 (CA-dToF) 成像.
为了实现高精度深度传感,降低数据处理开销.

主要方法:

使用320x240的SPAD阵列与集成的高速定时电路.
使用与光脉冲同步的直角三角波的像素内采样.
应用指数移动平均 (EMA) 到模拟电压用于飞行时间提取.

主要成果:

在6米的检测范围内,实现了亚厘米深度的精度.
证明有效的非相关的噪声源的平均值,只留下射击噪声.
在具有低光子检测效率 (PDE) 的QVGA传感器上成功实现了CA-dToF.

结论:

CA-dToF是一种可行的技术,用于使用SPAD阵列进行高分辨率,远程深度传感.
像素内处理显著提高dToF系统的效率和可扩展性.
这一进步为更复杂的深度传感摄像头应用铺平了道路.

关键词:

3D-ToF可以使用3D-ToF.在CA-dToF中使用.李达尔 (LiDAR) 是一个在线游戏.这就是SPAD SPAD的意思.深度感应感应深度感应深度指数级移动平均线指数级移动平均线开关电容器的电容器已经切换了.

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