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 10 of 10 for “"non-uniform illumination"”.
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The effects of non-uniform illumination on the performance of series connected photovoltaic arrays
… electrical power by using an SCPA. Fiber optic illumination is non-uniform and the current generated by an SCPA is limited by the photocell with the least amount of illumination. This thesis addresses the effects of Gaussian and step-index multi-mode optical fiber illumination on the performance …
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Algorithm optimization for real-time volumetric particle tracking velocimetry under non-uniform illumination for airflow studies
The student, Yu Zhao, submitted this Dissertation for approval on 2022-04-18 at 14:09.
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Image Quality Analysis in Dual-Source CT
… regions and increases the presence of noise. An non uniform illumination anomaly is found in the images obtained in the dual mode of the scanner. Although the z-axis resolution has strongly improve, the noisy character of the DSCT brings a step back in terms of xy-resolution. The use of this of …
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Techniques for Ocular Biometric Recognition Under Non-ideal Conditions
… under unconstrained conditions (e.g., non-uniform illumination, occlusions, motion blur, image resolution, etc.). This dissertation develops techniques to perform iris and ocular recognition under challenging conditions. The first contribution is an image-level fusion scheme to improve …
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Efficient Processing of Corneal Confocal Microscopy Images. Development of a computer system for the pre-processing, feature extraction, classification, enhancement and registration of a sequence of corneal images.
… quality of the individual images (blurring, non-uniform illumination within images, variable illumination between images and noise), and there are also difficulties posed for automatic processing caused by eye movements in both lateral and axial directions during the scanning process. Aiding …
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Efficient Processing of Corneal Confocal Microscopy Images. Development of a computer system for the pre-processing, feature extraction, classification, enhancement and registration of a sequence of corneal images
… quality of the individual images (blurring, non-uniform illumination within images, variable illumination between images and noise), and there are also difficulties posed for automatic processing caused by eye movements in both lateral and axial directions during the scanning process. Aiding …
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Advanced Characterization of Defects in Silicon Wafers and Solar Cells
… new approach of photoluminescence imaging using non-uniform illumination is developed in order to achieve accurate quantitative charge carrier lifetime image for non-uniform samples. This approach can potentially be combined with injection dependent lifetime spectroscopy for a spatially resolved …
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Development and Evaluation of Whole Slide Hyperspectral Confocal Fluorescence and Brightfield Macroscopy
… at the image seams, as well as introducing non-uniform illumination of the entire specimen. A further limitation often encountered in biomedical fluorescence microscopy is the high background due to the autofluorescence (AF) of endogenous compounds within cells and tissues. Often, AF can …
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Adaptive vision based scene registration for outdoor augmented reality
… environmental conditions due to variable illumination and weather. The majority of existing literature tests algorithms under the assumption of ideal or 'normal' imaging conditions. To ensure robustness under as many circumstances as possible it is also important to evaluate the systems …
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A study on image change detection methods for multiple images of the same scene acquired by a mobile camera.
… movement, considerable background clutter, illumination variation, tiny sizes of fence wires and non-uniform illumination that occurs across fence wires. There are several issues that arise from these kinds of multiple outdoor images. The issues are: (1) parallax (the apparent displacement …