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 20 of 66 for “"Image processing algorithms"”.
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Image Processing Algorithms for Diagnostic Analysis of Microcirculation
… of this study is to design an automated image processing system to segment microvessels, estimate the density of blood vessels in video recordings, and identify the distribution of blood flow. The proposed algorithm consists of two main stages: video processing and image segmentation. The …
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2D and 3D surface image processing algorithms and their applications
This doctoral dissertation work aims to develop algorithms for 2D image segmentation application of solar filament disappearance detection, 3D mesh simplification, and 3D image warping in pre-surgery simulation. Filament area detection in solar images is an image segmentation problem. A …
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Development of Advanced Image Processing Algorithms for Bubbly Flow Measurement
… the flow patterns are complicated in recorded image data. The segmentation and reconstruction of overlapping bubbles in these images is a challenging task. This dissertation provides a complete set of image processing algorithms for bubbly flow measurement. The developed algorithm can deal with …
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Noise-Enhanced and Human Visual System-Driven Image Processing: Algorithms and Performance Limits
<p>This dissertation investigates the problem of image processing based on stochastic resonance (SR) noise and human visual system (HVS) properties, where several novel frameworks and algorithms for object detection in images, image enhancement and image segmentation as well as the method to …
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Efficient design and implementation of image processing algorithms on reconfigurable hardware using Handel-C
Computer manipulation of images is generally defined as Digital Image Processing (DIP). DIP is used in variety of applications, including video surveillance, target recognition, and image enhancement. These applications are usually implemented in software but may use special purpose hardware for …
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Investigating image processing algorithms for provision of information in rock art sites using mobile devices
… to the visitor. This is done via a content based image retrieval system with the aid of image processing. We investigate 3 image processing algorithms for digital recognition of rock art images on mobile devices. The ubiquitous nature and recent technological advances has made mobile devices the …
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Development of image processing algorithms for automatic segmentation and selection of swine postural behaviors used in an interactive environmental control
… environmental control. The challenges from image segmentation and image selection of swine postural behavior for this control scheme require the study reported in this thesis. Image segmentation algorithm based on multithresholding was employed with the assistance of background reference …
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Curve evolution and estimation-theoretic techniques for image processing
… robust, computationally efficient, and global image processing algorithms. Such image processing algorithms are not only useful, but in high demand within the image processing arena. Recently, curve evolution and estimation-theoretic approaches to image processing have received considerable …
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SUPERRESOLUTION PHOTONICS
… include spatial mode demultiplexing as well as image processing algorithms like Center of Gaussians.
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The application of optimal transputer architecture to concurrent processing in the implementation of vision processing algorithms
Repetitive low level image processing transformations can be performed at high speeds by SIMD arrays, DSP and dedicated VLSI devices. These strategies cannot be adppted with more complex and time consuming data dependent algorithms. A flexible and programmable component must be used, and the use of …
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Aircraft Detection and Tracking Using UAV-Mounted Vision System
… are mounted. In the thesis, we consider several algorithms, including Kalman filters and particle filters, for stabilization. We provide detailed theoretical discussions of these filters as well as their implementations. The second one is reliable detection and tracking of aircraft using image …
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Vision-Aided Navigation for GPS-Denied Environments Using Landmark Feature Identification
… the development of vision-aided navigation algorithms that utilize processed images from a monocular camera as an alternative to GPS. The vision-aided navigation approach explored in this thesis entails defining a set of inertial landmarks, the locations of which are known within the …
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ROAD : Rapid Optical Asteroid Detection
… Discrete Radon Transform (3DRT), efficient image processing algorithms capable of identifying streaks at the detection limit in video of the night sky. Tilt and the 3DRT are asymptotically optimal algorithms for the blind search problem, which seeks to identify near-Earth asteroids of …
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New tools to enable children to manipulate images through computer programming
… proposes a programmable toolkit for building image filters to make the concepts of basic image processing accessible and engaging to children. The toolkit was developed in the context of Scratch, a media-centric programming environment intended for children. For this thesis, I redesigned the …
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Improvements on low-cost high-resolution CT system
… The goal of this thesis is to show that good CT image quality can be achieved with low cost CT systems while maintaining high resolution and keeping the collection time for a scan to a minimum (s;I hour). The CT system that is used for most of the work in this thesis is a third generation CT …
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Mueller-matrix-based analysis for second-harmonic generation imaging
… of biological structures. Invoking quantitative image analysis techniques facilitates the assessment of tissues in varying states. This thesis presents a quantitative description of the relative structural difference in collagen-based tissues by second harmonic generation (SHG) imaging techniques …
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Image processing for biological experiments on a mobile phone
… of a TLC plate is performed though a series of image processing algorithms on the Android smartphone. For drugs with a single active pharmaceutical ingredient (API) that absorbs ultraviolet (UV) light, the mobile phone-based detection system is able to discern 5% drug concentration differences, …
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BYU micro-SAR: A very small, low-power LFM-CW Synthetic Aperture Radar
… some differences from the typical strip map SAR processing model that must be addressed in signal processing algorithms. This thesis presents a derivation of the LFM-CW signal model and the associated image processing algorithms used for the uSAR developed at BYU. A data simulator for the BYU …
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