用标准CMOS传感器进行飞行时间成像的极化调节光学同质体
Ayaka Ebisu1, Takahito Aoto2, Tsuyoshi Takatani3
1Deggree Programs in Systems and Information Engineering, University of Tsukuba, Tsukuba 305-8573, Japan.
Sensors (Basel, Switzerland)
|April 28, 2025
概括
这项研究引入了一种新的间接飞行时间 (iToF) 深度成像系统,使用偏振调节的光学同点检测. 这种新的方法克服了传统iToF传感器的分辨率限制,实现了高分辨率的深度成像.
科学领域:
- 光学和光子学 在光学和光子学.
- 计算机视觉 计算机视觉
- 传感器技术 传感器技术
背景情况:
- 间接飞行时间 (iToF) 成像对于深度传感至关重要,从光信号相差计算深度.
- 由于像素电路的限制,传统的iToF传感器面临着空间分辨率和光收集效率之间的权衡.
- 在iToF像素中的电相关性阻碍了小型化和性能扩展.
研究的目的:
- 提出一种新的iToF深度成像系统,克服传统传感器的局限性.
- 使用标准CMOS传感器实现高分辨率的iToF深度成像.
- 为了提高噪声阻力和灵敏度,用于深度成像的相差估计.
主要方法:
- 开发了一种iToF系统,利用极化调制的光学同位素检测.
- 采用共振光弹性调制器用于极化状态调制.
- 集成了一个标准的CMOS图像传感器和一个偏振摄像头,用于光学相关性和减少测量.
- 使用雪崩光二极管和CMOS传感器验证的相差估计.
主要成果:
- 在雪崩光二极管和CMOS传感器设置中成功估计了相位差异.
- 在具有挑战性的条件下证明了准确的深度估计:低信号噪声比,时间强度变化和斑点噪声.
- 拟议的系统可通过随时可用的传感器实现高分辨率的iToF深度成像.
结论:
- 基于偏振调节的光学同流体检测的新型iToF系统有效地克服了分辨率效率的权衡.
- 这种方法允许使用标准的CMOS传感器进行高分辨率的深度成像,从而提高了抗噪声和灵敏度.
- 该系统对各种领域的先进深度传感应用充满希望.
相关概念视频
01:18Imaging Biological Samples with Optical Microscopy
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
01:26Phase Contrast and Differential Interference Contrast Microscopy
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...