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 29 for “"Peak Detection"”.
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Analysis of grey level weighted Hough transforms
… space quantizing errors, and Hough space peak detection strategy. One way to improve the accuracy of the transform is to weight each pixel’s Hough space sinusoid by an amount which reflects the pixel’s grey level contribution to an image space feature. This paper examines the behavior of …
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Data mining in computational proteomics and genomics
… by investigating two important problems, namely peak detection and structure matching. Peak detection is useful for biological pattern discovery while structure matching finds many applications in clustering and classification. The first part of this dissertation focuses on elastic peak detection …
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Post-Processing Method for Determining Peaks in Noisy Strain Gauge Data with a Low Sampling Frequency
… interference. This thesis proposes a peak detection algorithm, written in MATLAB, that can parallel process the 40,000 trips recorded in this naturalistic driving study. This algorithm uses an iterative LOWESS regression to eliminate the offset from zero when the strain gauge is not …
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MALDI-TOF MS Data Processing Using Wavelets, Splines and Clustering Techniques.
… baseline correction, normalization, and peak detection and alignment for biomarker discovery.</p>
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Vision systems for a mobile robot based on line detection using the Hough Transform and artificial neural networks.
… It proposes a number of vision systems based on detection of straight lines in images captured by a robot using the Hough transform and artificial neural networks as core algorithms. The Hough transform is a robust method for detection of basic features (Boyce et al 1987). However, it is so …
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AUTOMATED CURVED HAIR DETECTION AND REMOVAL IN SKIN IMAGES TO SUPPORT AUTOMATED MELANOMA DETECTION
… successful treatment rate; therefore early detection is crucial and several computer-aided methods have been developed to assist dermatologists. In skin images removing hairs without altering the lesion is important to effectively apply detection algorithms. This thesis focuses on the use of …
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Automatic Arterial Wall Detection and Diameter Tracking Using M-mode Ultrasound
… with a single ultrasound transducer in M-mode.Detection of the region containing the artery walls is obtained using a machine learning trained classifier. Artery lumen diameter is estimated using peak detection and correlation technique.The proposed algorithm is first tested on M-mode signal …
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The Development of an Adaptive Control System for a Phase-Locked Excitation (PhLEX) Method for Advanced Wind Turbine Blade Fatigue Testing
… in Simulink, which utilizes PID control and peak detection. A Simulink model of a wind turbine blade was incorporated for initial control system design. The use of Hardware-ln-the-Loop (HIL) and Software-ln-the-Loop (SIL) testing methods will be employed for fault testing before the full …
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The effects of a 1.8 GHz continuous electromagnetic fields on mucociliary transport of human nasal mucosa
… using an optical flow technique with the peak detection method. The 1.8 GHz EMF-exposed group showed a decreased CBF when compared to the control group. In the cytotoxicity assay, the difference in survival rates was not found between the two groups. In the EMF-exposed group, protein …
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Multi-Domain Coincidence Processing and Memory Architecture for Real-Time Geiger Mode LiDAR
… orientation-compensated histogram generation and peak detection to filter the LiDAR data stream, removing redundancy and spurious outputs. The multi-processor design, employing custom logic in concert with multiple CPUs, offers a reduction in system size, weight, and power [SWaP] by several orders …
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Portable Micro-Gas Chromatography with Multidimensional Compound Identification Analysis
… obtained from the setup for signal filtering and peak detection is described in this thesis. A multidimensional analysis for compound identification in complex mixtures is presented.
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An Instantaneous Frequency Based Approach to Estimate Heart Rate and Calculate Heart Rate Variability Metrics
… calculated using the interval between R peaks in an EKG signal. Consequently, heart rate measurements rely on the presence of distinctive R peaks and the accurate detection of them. The study is motivated by the drawbacks associated with using R peaks to calculate instantaneous heart …
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Ultra-wideband Radar Detection of Breathing Rate: A Comparative Evaluation
… Fast Fourier Transformation (FFT) and Peak Detection. Results suggest great potential for the Walabot coupled with the FFT technique. However, the system requires further testing to address all of the research challenges. Overall, this work provides important steps toward using the …
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Detection, identification and localization of R/C electronic devices through their unintended emissions
"The accurate and reliable detection of unintended emissions from radio receivers has a broad range of commercial and security applications. This thesis presents detection, identification, and localization methods for multiple RC electronic devices in a realistic environment. First, a Hurst …
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Modular GC: A Fully Integrated Micro Gas Chromatography System
… chromatograms, including baseline correction and peak detection, are implemented on a microcontroller board and tested extensively as a part of this work. A novel algorithm for multidimensional analysis for the identification of co-eluting compounds in complex samples is implemented with a …
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Postglacial Reconstruction of Fire History from a Small Lake in Southwest Yukon using Sedimentary Charcoal and Pollen
… signal to noise index of 6.2, suggesting the peaks are significant and detectable from the slowly varying background level and the record is suitable for peak detection. Macroscopic charcoal analysis indicates an active fire history throughout the record, with 90 fires occurring throughout the …
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Structure Solution Using Precession Electron Diffraction and Diffraction Tomography
… reciprocal space following an automated peak detection process. The factors which complicate the process of unit cell determination are discussed, and an algorithm designed for autoindexing “obstinate” lists of X-ray reflections was found to be able to determine the unit cells accurately. …
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Multi-photon decay mode spectroscopy of positronium
… system was selected such that the effect of peak pulse pile-up was minimised (to less than 3%), while maximising the full-energy peak detection efficiency at 511 keV (to 3%). For this work, locally-produced 22Na radioactive sources were used as positron emitters, which enabled the formation …
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DM EMI Noise Analysis for Single Channel and Interleaved Boost PFC in Critical Conduction Mode
… the investigation of the principle of the quasi-peak detection is proposed to predict the DM EMI noise of the CRM PFC. The developed prediction method is verified by measurement results and the predicted DM EMI noise is good to evaluate the EMI performance. Based on the noise prediction, the …
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Quality of heart rate variability features obtained from ballistocardiograms
… necessary to record BCGs and to perform BCG peak detection to obtain HBIs with the least possible error, (ii) determines an allowable range for HBI error by studying the effects of this error on HRV quality in the context of HRV-based sleep staging, and (iii) compares the determined …
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