Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 16 of 16 for “"Imaging Sensor"”.
-
High-Resolution Low-Noise Polarization Imaging Sensor for Astronomical Applications
<p>Polarization imaging is useful to the field of astronomy because the polarization state caused by reflections, scattering events, and magnetic fields can be used to infer properties such as shape and index of refraction about celestial bodies. This work presents a low-noise high-resolution …
-
Real-Time Nitrogen Detection System of Corn Crop Using a Multi -Spectral Imaging Sensor
Real-time N-deficiency was estimated by using NDVI and mapped relative to unstressed healthy plants. The MSIS system provided a measure of crop response that correlated with plant SPAD measurements (-0.93 for G channel and -0.88 for R channel). The system had smaller measurement variation than the …
-
Creating cohesive video with the narrative-informed use of ubiquitous wearable and imaging sensor networks
In today's digital era, elements of anyone's life can be captured, by themselves or others, and be instantly broadcast. With little or no regulation on the proliferation of camera technology and the increasing use of video for social communication, entertainment, and education, we have undoubtedly …
-
An investigation into the design of a satellite based stereo imaging sensor and the use of automatic image matching in the production of digital elevation models
… are the design of a micro-satellite based stereo imaging sensor and the automatic matching of digital stereo images for automatic cartography applications. The two problems are related; they are both components of a stereo vision system. The research was initially motivated by the decision of the …
-
Design, development and characterization of an integrated multispectral polarimetric sensor system
In this thesis, a new type of integrated imaging sensor is introduced to detect multispectral and polarimetric signatures in an infrared scene. The sensor is a stack consisting of an infrared detector array, and an array of multispectral and polarimetric filters. In this first phase of the …
-
Ground Sensor Based Variable Rate Nitrogen Management
Integrating the multi-spectral imaging sensor with a variable-rate nitrogen application system, can provide the fundamental means for performing site-specific variable-rate nitrogen side-dressing applications. Using the estimated SPAD values to support sensor-based variable rate nitrogen …
-
A laboratory study of the 'shoreline' detected in video imagery
… simulate varying swash zone characteristics and sensor-target geometry found in digital images collected by ARGUS coastal imaging systems. Using a hyperspectral sensor, reflectance data were integrated over the respective red, blue and green wavelengths corresponding to a standard ARGUS video …
-
Compact Optical Sensing Systems for pH and Other Substances Detection - Theory and Implementation
… of importance in research and industry. Optical sensors based on contact imaging realize the chemical detection in compact, efficient and inexpensive ways. In the first project real-time optical pH sensor based on complementary metal–oxide–semiconductor (CMOS) contact imaging and microfluidics, …
-
Pipe Inspection Automation with Mobile Ground Vehicles
… the way to control this locomotion unit and an imaging sensor in order to acquire information to make decisions. This is why three experiments are presented, 1) a robotic platform to scan pipes with collimated laser-lines in a go-stop fashion, 2) a robotic platform on a moving plane, which is …
-
Synthetic Materials with Redox-Triggers for Imaging and Drug Delivery
… site-targeted drug delivery system and selective imaging reporters. We developed stimuli-sensitive materials with two different redox switches including trimethyl-locked quinone propionic acid and nitrobenzyl moieties. Novel redox-sensitive polymeric nanoparticles and micelles were prepared from a …
-
Explorations in Monocular Distance And Ranging (MODAR) Techniques for Real-World Applications
… such that the distance between the lens and the imaging sensor in the camera was varied to change the optical power of the lens. This setup suffered from several limitations but provided significant insight into the fundamental principles governing depth-from-focus retrieval. Finally, 12mm, f/6, …
-
Development and characterisation of Monolithic Active Pixel Sensor prototypes for the upgrade of the ALICE Inner Tracking System
… of seven layers of Monolithic Active Pixel Sensors (MAPS) with high granularity, which will fulfil the material budget, readout and radiation hardness requirements for the upgrade. Intensive R&D has been carried out in the last four years on MAPS in the framework of the ALICE ITS upgrade. …
-
Viewpoint estimation in medical imaging
In medical imaging, the appearance of a certain body part on a radiograph depends not only on the position but also on the orientation of the X-ray imaging system with respect to the patient. Given a 2D image of a 3D scene, the problem of viewpoint estimation aims to determine the position and the …
-
Remote detection of forest structure in the White Mountains of New Hampshire: An integration of waveform lidar and hyperspectral remote sensing data
… Hampshire using NASA's airborne Laser Vegetation Imaging Sensor (LVIS). High-resolution spectral imagery from 1997 and 2003 was likewise acquired using NASA's Airborne Visible/Infrared Imaging Spectrometer (AVIRIS). USDA Forest Service Northeastern Research Station (USFS NERS) 2001-2003 inventory …
-
Methods and algorithms for quantitative analysis of metallomic images to assess traumatic brain injury
… methods for a novel application of metallomic imaging mass spectrometry (MIMS) to biological tissue. Unlike traditional modalities used to assess neuropathology, that suffer from limited sensitivity and analytical capacity, MIMS uses a mass spectrometer -- an analytical instrument for measuring …
-
Bio-Inspired Multi-Spectral Imaging Sensors and Algorithms for Image Guided Surgery
<p>Image guided surgery (IGS) utilizes emerging imaging technologies to provide additional structural and functional information to the physician in clinical settings. This additional visual information can help physicians delineate cancerous tissue during resection as well as avoid damage to …