Essays about: "infrared sensor"

Showing result 6 - 10 of 80 essays containing the words infrared sensor.

1. 6. The use of hyperspectral sensors for quality assessment : A quantitative study of moisture content in indoor vertical farming

   University essay from Mälardalens universitet/Akademin för innovation, design och teknik

   Author : Arezo Ahaddi; Zeineb Al-Husseini; [2023]
   Keywords : Hyperspectral Imaging; lettuce; moisture content; NIR; near-infrared spectroscopy; shelf life; quality assessment; vertical farming; MicroNIR;

   Abstract : Purpose: This research will study how hyperspectral sensoring can assess the moisture content of lettuce by monitoring its growth in indoor vertical farming. Research questions: “What accuracy can be achieved when using hyperspectral sensoring for assessing the moisture content of lettuce leaves grown in vertical farming?” “How can vertical farming contribute to sustainability in conjunction with integration of NIR spectroscopy?” Methodology: This study is an experimental study with a deductive approach in which experiments have been performed using the hyperspectral technologies singlespot sensor and the hyperspectral camera Specim FX17 to collect spectral data. READ MORE

3. 7. Image Fusion of Infrared and Visible Images for Computer Vision Tasks

   University essay from Uppsala universitet/Institutionen för informationsteknologi

   Author : Emil Friðriksson; [2023]
   Keywords : ;

   Abstract : Reliable perception in all type of weather conditions is an integral part of autonomous vehicles. In recent years, infrared cameras have become more accessible resulting in increased research and a handful of publicly available datasets that provide image pairs of infrared and visible images. READ MORE

4. 8. Focal Spot Optimization Using Spatial Light Modulation and a Phase Retrieval Algorithm

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Robert Petersen; [2023]
   Keywords : Spatial Light Modulation; Phase Retrieval Algorithm; Focal Spot Optimization; Adaptive Optics; Wavefront Sensing; Lasers; Physics and Astronomy; Technology and Engineering;

   Abstract : Aberrations to the wavefront of a laser beam reduce the quality of the focal spot and are generally undesired. This project is aimed at determining the aberrations of laser beams by using a phase retrieval algorithm and to show that it is possible to correct the aberrations with a spatial light modulator to optimize the focal spot. READ MORE

5. 9. A Positioning System for Landing a UAV on a UGV in a GNSS-Denied Scenario

   University essay from Linköpings universitet/Institutionen för systemteknik

   Author : Tim Wiik; [2022]
   Keywords : Sensor fusion; UAV; UGV; NIR-LED; Extended kalman filter; Unmanned Aerial Vehicle; Unmanned Ground Vehicle; Autonomous Landing; GNSS-denied Scenario;

   Abstract : A system of an unmanned aerial vehicle (UAV) collaborating with an unmanned ground vehicle (UGV) for use in for example surveillance, reconnaissance, transport and target acquisition is studied. The project investigates the problem of estimating the relative position, velocity and orientation between the UAV and the UGV required to autonomously land the UAV on the UGV during movement. READ MORE

6. 10. Investigation and evaluation of optical distance sensors

   University essay from Uppsala universitet/Signaler och system

   Author : Olof Wigzell; [2022]
   Keywords : optics; radiometry; senssor; microcontroller; irradiance; circuit design; calibration; validation;

   Abstract : Optical sensors are among the sensors that are often used for distance measurements. An optical distance sensor is basically made of a light emitter (Tx) such as a light emitting diode (LED), a light receiver (Rx) such as a photosensitive transistor, and a circuit supporting the operation of the Tx and Rx. READ MORE