Sökning: "Segmentation"

Visar resultat 1 - 5 av 264 avhandlingar innehållade ordet Segmentation.

  1. 1. Analysis of Wnt ligands and Fz receptors in Ecdysozoa Investigating the evolution of segmentation

    Detta är en avhandling från Uppsala : Uppsala University, Department of Earth Sciences

    Författare :Mattias Hogvall; Uppsala universitet.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Segmentation; Onychophora; Wnt genes; Frizzled; Hox genes; Priapulida; Biology with specialization in Evolutionary Organismal Biology; Biologi med inriktning mot evolutionär organismbiologi;

    Sammanfattning : .... LÄS MER

  2. 2. Improving Multi-Atlas Segmentation Methods for Medical Images

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Jennifer Alvén; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Supervised learning; semantic segmentation; multi-atlas segmentation; conditional random fields; label fusion; feature-based registration; image registration; random decision forests; convolutional neural networks; medical image segmentation;

    Sammanfattning : Semantic segmentation of organs or tissues, i.e. delineating anatomically or physiologically meaningful boundaries, is an essential task in medical image analysis. One particular class of automatic segmentation algorithms has proved to excel at a diverse set of medical applications, namely multi-atlas segmentation. LÄS MER

  3. 3. Segmentation and fitting for geometric reverse engineering : processing data captured by a laser profile scanner mounted on an industrial robot

    Detta är en avhandling från Örebro : Örebro universitet

    Författare :Mohamed Rahayem; Örebro universitet.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geometric Reverse Engineering; Industrial robot; Laser profile scanner; Segmentation; Fitting; TECHNOLOGY; TEKNIKVETENSKAP; TECHNOLOGY Other technology Mechanical engineering; TEKNIKVETENSKAP Övriga teknikvetenskaper Maskinteknik; Maskinteknik; Mechanical Engineering;

    Sammanfattning : Geometric Reverse Engineering (GRE) is the problem of creating CAD models of real objects by measuring point data from their surfaces. The GRE process is usually divided into four sub processes, data capturing, preprocessing, segmentation, fitting and finally CAD model creation. To automate the GRE process the sub processes need to be integrated. LÄS MER

  4. 4. Segmentation and Visualisation of Human Brain Structures

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Roger Hult; Uppsala universitet.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bildanalys; segmentation; visualisation; brain; cortex; hippocampus; autoradiography; MRI; PET; ROI; Bildanalys; TECHNOLOGY Information technology Image analysis; TEKNIKVETENSKAP Informationsteknik Bildanalys; Computerized Image Analysis; datoriserad bildanalys;

    Sammanfattning : In this thesis the focus is mainly on the development of segmentation techniques for human brain structures and of the visualisation of such structures. The images of the brain are both anatomical images (magnet resonance imaging (MRI) and autoradigraphy) and functional images that show blood flow (functional magnetic imaging (fMRI), positron emission tomography (PET), and single photon emission tomograpy (SPECT)). LÄS MER

  5. 5. Segmenting and Tagging Text with Neural Networks

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Yan Shao; Uppsala universitet.; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; neural networks; sequence labelling; multilinguality; word segmentation; sentence segmentation; morpheme segmentation; transliteration; joint word segmentation and POS tagging;

    Sammanfattning : Segmentation and tagging of text are important preprocessing steps for higher-level natural language processing tasks. In this thesis, we apply a sequence labelling framework based on neural networks to various segmentation and tagging tasks, including sentence segmentation, word segmentation, morpheme segmentation, joint word segmentation and part-of-speech tagging, and named entity transliteration. LÄS MER