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.
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Showing 1 to 20 of 23 for “"co-occurrence matrix"”.
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An automated system for the classification and segmentation of brain tumours in MRI images based on the modified grey level co-occurrence matrix
… remains challenging due to high variability and complexity of the brain tumours. Visual examination of MRI scans to diagnose brain tumours is the accepted standard. However due to the large number of MRI slices that are produced for each patient this is becoming a time consuming and slow process …
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Image Quality Analysis Using GLCM
Gray level co-occurrence matrix has proven to be a powerful basis for use in texture classification. Various textural parameters calculated from the gray level co-occurrence matrix help understand the details about the overall image content. The aim of this research is to investigate the use of the …
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A Mixed Emotions Framework And Its Applications In Affective Computing
Traditionally, computer vision has categorized displayed emotions into seven basic categories.: sadness, happiness, anger, fear, disgust, surprise, and neutral. This approach is restrictive because human emotions do not always fall neatly into these seven categories but often cross categorical …
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Krūties vėžio magnetinio rezonanso vaizdo tekstūros analizė /
… and to identify precise radiomic features that could develop new non-invasive breast cancer diagnostic approaches, oriented at genetics. Methods: A prospective analysis of MRI radiomic features and genetic data from 42 patients diagnosed with invasive ductal carcinoma was performed. The cohort …
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A Vegetation Analysis on Horn Island, Mississippi, ca. 1940 Using Characteristic Dimensions Derived from Historical Aerial Photography
… barrier island chain in the northern Gulf of Mexico located approximately 18kn off the coast of Mississippi. This island’s habitats have undergone many transitions over the last several decades. The goal of this study was to quantify habitat change over a seventy year period using historical black …
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Computer Vision Based Analysis of Broccoli for Application in a Selective Autonomous Harvester
… majority of agriculture production in developed countries has gone from family farms to industrial operations. With the advent of large-scale farming, the automation of basic farming operations has increasingly made practical and economic sense. Broccoli, which is still harvested by hand, is one …
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Textural Analysis of Historical Aerial Photography to Determine Change In Coastal Marsh Extent: Site of the Present-Day Grand Bay National Estuarine Research Reserve (GBNERR), Mississippi, 1955-2014
<p>Coastal marshlands are among the world’s most highly productive ecosystems but they have diminished greatly in the past several decades owing to sea-level rise and direct anthropogenic influences. An effective means of quantifying loss or gain in marsh area is through the use of aerial image …
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Early Forest Fire Detection Using Texture Analysis of Principal Components from Multispectral Video
<p>The aim of this study is to incorporate the spectral, temporal and spatial attributes of a smoke plume for Early Forest Fire Detection. Image processing techniques are used on multispectral (red, green, blue, mid-wave infrared, and long-wave infrared) video to segment and indentify the presence …
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Detection of prostate cancer using multi-parametric magnetic resonance
… to detect prostate cancer was developed by combining information from 3 different MR methodologies: T2-weighted, T2-mapping, and Line Scan Diffusion lmaging(LSDI). From these MR sequences, 4 sets of image intensities were obtained: T2-weighted(T2W) from T2-weighted imaging, Apparent …
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Development of an image based technique for assessment of colorectal epithelial integrity and function in an ovine model
… alteration in permeability may lead to or be a consequence of several disease states. Confocal endomicroscopy (CE) is an emerging technology capable of assessing mucosal permeability and structure during endoscopy. Chapter 2 assesses the alteration in rectal permeability in an ovine model …
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PROFILING EFFUSION CELLS BY QUANTITATIVE ANALYSIS OF MORPHOLOGY AND DIFFRACTION IMAGING PATTERNS
… diagnosis of cancers and patient management. Conventional PPE cytology of a PPE sample is labor intensive and its efficacy depends heavily on the experience of trained specialists in addition to low sensitivity. In this dissertation research project, we focused our effort on application of a …
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Non-contact Methods for Detecting Hot-mix Asphalt Nonuniformity
… quantify the presence of this problem in newly constructed pavements. Current practices are usually based on visual inspections that identify non-uniform surface texture areas. An automatic process that reduces subjectivity would improve the quality-assurance procedures of HMA pavements. …
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Morphological granulometry for texture analysis
This thesis concerns the analysis of digital texture images, using techniques from mathematical morphology and regression modelling for the classification of texture images. It investigates the use of granulometric moments, arising from the morphological pattern spectrum, as texture descriptors to …
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Quantitative Texture Analysis and Automated Segmentation of Patellar Tendon Sonographic Images on Collegiate Athletes
Patellar tendinopathy, a common cause of anterior knee pain, is primarily due to degenerative changes in the patellar tendon resulting from repetitive stress. While the tendon itself is the primary focus, damage can also manifest in surrounding tissues, such as the subcutaneous tissue and the fat …
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Computer vision and texture analysis for characterization of X-ray images of rocks
X-ray micro-computed tomography (micro-CT) has provided us digital twins of physical rocks. Digital twins are raw grayscale micro-CT images that contain information regarding rock-microstructure. These raw micro-CT images are then transformed into their segmented counterparts, which attempt to …
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Remote sensing characterisation of the forest-tundra ecotone
… forest and Arctic tundra, the Forest-tundra ecotone (FTE), is an area of high ecological and climatological significance. Satellite remote sensing has the potential to enable accurate circumarctic mapping and characterisation of both latitudinal and altitudinal FTEs. This study aims at a …
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Temporal, spatial, spectral and polarisation characteristics of the SAR backscatter from regenerating tropical forests
… of an accurate global carbon budget and the consequent ability to understand and predict future environmental change is dependent on knowing the strength of terrestrial sinks and sources of carbon. Regenerating tropical forests are one of the major terrestrial carbon sinks as they are found …
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Comparison of spatial and spectral properties of Landsat-8 and Sentinel-2 data for mapping plant chlorophyll-a
… capacity to ensure proper flow of ecosystem services. Nowadays, with a rapid increase in human population and deforestation chl-a in higher plants remain at risk from degradation. Aim The study sought to compare the spatial and spectral properties Landsat-8 and Sentinel-2 in …
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Morphological quantitation software in breast MRI: application to neoadjuvant chemotherapy patients
… the image can be obtained. Texture analysis is commonly used in image classification of aerial and satellite photography, studies have also focussed on utilising texture in MRI especially in the brain. Recent research has focussed on other organs such as the breast wherein lesion morphology is …
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The Mechanism of Action of Hyaluronan Therapy as a Treatment for Osteoarthritis and the Assessment of Osteoarthritic Articular Cartilage Using Ultrasound
… irreversible osteoarthritic damage develops. By combining molecular characterisation, ex vivo cartilage experiments, and advanced ultrasound imaging, the research aims to improve understanding of HA therapy and to evaluate ultrasound as an accessible diagnostic tool for OA.</p><p dir="ltr"><b>HA …
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