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相关概念视频

The Retina01:32

The Retina

69.2K
The retina is a layer of nervous tissue at the back of the eye that transduces light into neural signals. This process, called phototransduction, is carried out by rod and cone photoreceptor cells in the back of the retina.
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Anatomy of the Eyeball01:20

Anatomy of the Eyeball

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The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
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Vision01:24

Vision

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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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Visual System01:26

Visual System

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Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
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相关实验视频

Updated: Jul 16, 2025

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors
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Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

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IRIS:在图像传感器中集成视网膜功能

Zihan Yin1, Md Abdullah-Al Kaiser1, Lamine Ousmane Camara2

  • 1Information Sciences Institute, University of Southern California, Los Angeles, CA, United States.

Frontiers in neuroscience
|September 18, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了由视网膜启发的新型神经形态图像传感器. 这些传感器实现了先进的运动检测,用于在动态环境中实时决策.

关键词:
潜伏式检测检测 潜伏式检测检测电路设计 电路设计图像传感器 图像传感器 图像传感器这是一个神经形态传感器.对象的运动灵敏度 对象的运动灵敏度视网膜启发的传感器传感器

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Using Retinal Imaging to Study Dementia
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相关实验视频

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科学领域:

  • 神经科学是一个神经科学.
  • 计算机工程 计算机工程
  • 电气工程 电气工程

背景情况:

  • 神经形态图像传感器模仿生物视网膜进行视觉计算.
  • 早期的传感器实现了视网膜的基本功能;先进的下游处理在很大程度上仍未被探索.
  • 最近在视网膜电路上的发现为传感器开发提供了新的机会.

研究的目的:

  • 开发一种技术电路联合设计,用于在神经形态图像传感器中实现先进的运动计算.
  • 在传感器的输出阶段整合物体运动灵敏度和迫在眉的检测.
  • 为了实现基于视觉的系统的实时,节能决策.

主要方法:

  • 使用了技术电路联合设计方法.
  • 模拟了Globalfoundries 22nm技术节点上的拟议电路.
  • 利用半导体芯片堆叠技术的进步.

主要成果:

  • 证明了实现对象运动灵敏度和迫在眉的检测的可行性.
  • 验证了视网膜启发的电路可以在现有的图像传感平台上制造.
  • 展示了使用先进芯片堆叠集成的潜力.

结论:

  • 拟议的图像传感器 (IRIS) 技术中的综合视网膜功能可实现先进的运动处理.
  • 使用当前的半导体制造能力,可以制造IRIS技术.
  • 这一进步有望增强需要低带宽,实时决策的机器视觉应用.