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JSSC 2009第7期Other0.35μm CMOS

Single-Photon Synchronous Detection Cristiano Niclass Member IEEE Claudio Favi

提出一种全数字成像技术,同步检测光的相位和强度,用于重构场景深度图。
最大非线性误差低于12 cm,重复性误差3.8 cm
单光子检测同步检测深度图CMOS图像增强
创新点1:单光子同步检测技术(方法创新):该技术首次实现了光相位和强度的同步检测,通过全数字成像技术,显著提高了光子检测的精度和效率,实验验证了相位预测的准确性。
创新点2:全集成摄像头设计(系统创新):采用0.35μm CMOS工艺设计并制造了全集成摄像头,集成了调制光源和光子飞行时间捕获功能,实现了场景深度图的重建,最大非线性误差低于12cm。
创新点3:被动模式下的图像增强(方法创新):在被动模式下,通过反射模式的差分图进行高级图像处理,显著提升了2D场景的图像质量,最大重复性误差仅为3.8cm。
创新点4:调制光源与光子飞行时间捕获(电路创新):设计了调制光源和光子飞行时间捕获电路,实现了目标反射光子的独立捕获,为深度测量提供了高精度的数据支持。
Abstract
Phase and intensity of light are detected simulta- neously using a fully digital imaging technique: single-photon synchronous detection. This approach has been theoretically and experimentally investigated in this paper. We designed a fully integrated camera implementing the new technique that was fabricated in a 0.35 m CMOS technology. The camera demonstrator features a modulated light source, so as to inde- pendently capture the time-of-flight of the photons reflected by a target, thereby recons