Polarization image sensor-based laser scanner for reflective metals: architecture and implementation

2021 ◽  
Author(s):  
Jaime Marco-Rider ◽  
Lars Tingelstad ◽  
Olav Egeland
Keyword(s):  
Laser Scanner ◽  
Image Sensor ◽  
Polarization Image

Bioinspired Focal-Plane Polarization Image Sensor Design: From Application to Implementation

2014 ◽  
Vol 102 (10) ◽  
pp. 1435-1449 ◽  
Author(s):  
Milin Zhang ◽  
Xiaotie Wu ◽  
Nan Cui ◽  
Nader Engheta ◽  
Jan Van der Spiegel
Keyword(s):  
Focal Plane ◽  
Image Sensor ◽  
Sensor Design ◽  
Polarization Image

scholarly journals A Research and Application of the Processing Methods of Railway Measurement Based on Self-Mobile Scanning Measurement System

2020 ◽  
Author(s):  
Jiancai Zhang ◽  
Hang Mu ◽  
Feng Han ◽  
Shumin Han
Keyword(s):  
Measurement System ◽  
High Speed ◽  
Automatic Segmentation ◽  
Laser Scanner ◽  
Region Growing ◽  
Image Sensor ◽  
Operating Conditions ◽  
Secondary Development ◽  
Railway Line ◽  
Region Growing Segmentation

With the gradual improvement of China’s railway net, the opening of international railways as well as the continuous growth of railway operating mileage, the workload of remeasuring railways is increasing. The traditional methods of remeasuring railways can not meet current high-speed and high-density operating conditions anymore in terms of safety, efficiency and quality, so a safer and more efficient measurement method is urgently needed.This thesis integrated various sensors on a self-mobile instrument, such as 3D laser scanner, digital image sensor and GNSS_IMU, designing a set of intelligent and integrated self-mobile scanning measurement system. This thesis proposed region growing segmentation based on the reflection intensity of point cloud. Through the secondary development of CAD, the menu for automatic processing of self-mobile scanning measurement system is designed to realize rail automatic segmentation, extraction of rail top points, fitting of plane parameters of railway line, calculation of curve elements and mileage management.The results show that self-mobile scanning measurement system overcomes the shortcomings of traditional railway measurement to some extent, and realizes intelligent measurement of railways.

Integrated real-time polarization image sensor based on UV-NIL and calibration method

2022 ◽  
pp. 1-1
Author(s):  
Chuanlong Guan ◽  
Ran Zhang ◽  
Jinkui Chu ◽  
Ze Liu ◽  
Yuanyi Fan ◽  
...  
Keyword(s):  
Real Time ◽  
Calibration Method ◽  
Image Sensor ◽  
Polarization Image

An AER based CMOS polarization image sensor with photo-aligned micropolarizer array

2009 ◽  
Author(s):  
Wu Xiajun ◽  
Xiaojin Zhao ◽  
Amine Bermak ◽  
Farid Boussaid
Keyword(s):  
Image Sensor ◽  
Polarization Image

Dual-layer metal-grid polarizer for polarization image sensor in 65-nm CMOS technology

2012 ◽  
Author(s):  
Kiyotaka Sasagawa ◽  
Norimitsu Wakama ◽  
Daisuke Okabayashi ◽  
Toshihiko Noda ◽  
Takashi Tokuda ◽  
...  
Keyword(s):  
Cmos Technology ◽  
Image Sensor ◽  
Metal Grid ◽  
Polarization Image

scholarly journals DoFP-ML: A Machine Learning Approach to Food Quality Monitoring Using a DoFP Polarization Image Sensor

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 150282-150290
Author(s):  
Maen Takruri ◽  
Abubakar Abubakar ◽  
Noora Alnaqbi ◽  
Hessa Al Shehhi ◽  
Abdul-Halim M. Jallad ◽  
...  
Keyword(s):  
Machine Learning ◽  
Food Quality ◽  
Image Sensor ◽  
Quality Monitoring ◽  
Learning Approach ◽  
Machine Learning Approach ◽  
Polarization Image

scholarly journals An Angle of Polarization (AoP) Visualization Method for DoFP Polarization Image Sensors Based on Three Dimensional HSI Color Space

Sensors ◽  
2019 ◽  
Vol 19 (7) ◽  
pp. 1713
Author(s):  
Hui Wang ◽  
Haofeng Hu ◽  
Xiaobo Li ◽  
Zijian Guan ◽  
Wanshan Zhu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Real Time ◽  
Color Space ◽  
Three Dimensional ◽  
Image Sensor ◽  
Image Sensors ◽  
Human Vision ◽  
Visualization Method ◽  
Polarization Image ◽  
Hsi Color Space

A demand for division of focal plane (DoFP) polarization image sensors grows rapidly as nanofabrication technologies become mature. The DoFP sensor can output real time data of polarization information. In this paper, a novel visualization method for angle of polarization (AoP) is proposed for DoFP polarization image sensors. The data characteristics of AoP are analyzed, and strategies for a visualization method are proposed which conforms to the characteristics of AoP data. According to these strategies, we propose a visualization method for AoP data based on three dimensional HSI color space. This method uses intensity and saturation to characterize the magnitude of the angle between the polarization direction and the horizontal direction wherein the hue indicates the deflection direction. It is shown by the numerical simulation that the noise in the AoP image can be suppressed by our visualization method. In addition, the real-world experiment results are consistent with the numerical simulation and verify that the AoP image obtained by our method can suppress the influence of characterization noise, and the image is simple and intuitive, which is advantageous to human vision. The proposed method can be directly used for the commercialized DoFP polarization image sensor to display real-time AoP data.

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