Sökning: "graph-cut"

Hittade 5 avhandlingar innehållade ordet graph-cut.

  1. 1. Water–fat separation in magnetic resonance imaging and its application in studies of brown adipose tissue

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jonathan Andersson; Uppsala universitet.; [2019]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; brown adipose tissue; magnetic resonance imaging; water–fat signal separation; graph-cut; positron emission tomography; 18F-fludeoxyglucose; infrared thermography; machine learning; artificial neural networks; deep learning; convolutional neural networks; Radiology; Radiologi;

    Sammanfattning : Virtually all the magnetic resonance imaging (MRI) signal of a human originates from water and fat molecules. By utilizing the property chemical shift the signal can be separated, creating water- and fat-only images. LÄS MER

  2. 2. Machine Vision for Road Pavement Applications Bitumen Coverage and Grain Size Estimation

    Detta är en avhandling från Lunds Universitet, Centre for Mathematical Sciences

    Författare :Hanna Källén; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : In this thesis some research questions regarding durability and quality of roads has been investigated. The questions are analyzed from an image analysis point of view and aims to be a complement to existing methods for analyzing asphalt. LÄS MER

  3. 3. Salient Region Detection Methods with Application to Traffic Sign Recognition from Street View Images

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Keren Fu; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; normalized cut; traffic sign recognition; saliency propagation; color distribution; continuous conditional random field; manifold; Salient region detection; adaptive graph edge weights; color contrast; geodesics;

    Sammanfattning : In the computer vision community, saliency detection refers to modeling the selective mechanism in human visual attentions. Outputs of saliency detection algorithms are called saliency maps, which represent conspicuousness levels of different scene areas. LÄS MER

  4. 4. Dynamic Programming for Ultrasound Image Analysis of Atherosclerosis

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Peter Holdfeldt; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; atherosclerotic plaque; ultrasound; classification; dynamic programming; carotid artery; image analysis; edge detection; graph cuts;

    Sammanfattning : Cardiovascular diseases, due to atherosclerosis, are among the most common causes of death in the industrialized world. Atherosclerotic plaque composition as well as arterial diameter and wall thickness can be used to predict the risk of cardiovascular disease. These risk factors can be assessed non-invasively by ultrasound. LÄS MER

  5. 5. Analysis of Medical Images : Registration, Segmentation and Classification

    Detta är en avhandling från Centre for Mathematical Sciences, Lund University

    Författare :Matilda Landgren; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : A large number of medical examinations involve images in some way. Images can be used for diagnostics, follow-up studies and treatment planning. In this thesis mathematical methods have been developed and adapted in order to analyze medical images. LÄS MER