Essays about: "level-set segmentation"

Showing result 1 - 5 of 7 essays containing the words level-set segmentation.

  1. 1. A Gaussian Mixture Model based Level Set Method for Volume Segmentation in Medical Images

    University essay from Linköpings universitet/Beräkningsmatematik; Linköpings universitet/Tekniska fakulteten

    Author : Grayson Webb; [2018]
    Keywords : Probablistic level set methods; Gaussian mixture models; image segmentation; volume segmentation; medical images;

    Abstract : This thesis proposes a probabilistic level set method to be used in segmentation of tumors with heterogeneous intensities. It models the intensities of the tumor and surrounding tissue using Gaussian mixture models. READ MORE

  3. 2. Segmentation of high frequency 3D ultrasound images for skin disease characterization

    University essay from KTH/Teknisk informationsvetenskap

    Author : Adrien Anxionnat; [2017]
    Keywords : level-set segmentation; active contours; optimization; statistical modeling; Blitz ;

    Abstract : This work is rooted in a need for dermatologists to explore skin characteristicsin depth. The inuence of skin disease such as acne in dermal tissues is stilla complex task to assess. Among the possibilities, high frequency ultrasoundimaging is a paradigm shift to probe and characterizes upper and deep dermis. READ MORE

  4. 3. Design, Evaluation and Implementation of a Pipeline for Semi-Automatic Lung Nodule Segmentation

    University essay from Linköpings universitet/Datorseende

    Author : Lukas Berglin; [2016]
    Keywords : ;

    Abstract : Lung cancer is the most common type of cancer in the world and always manifests as lung nodules. Nodules are small tumors that consist of lung tissue. They are usually spherical in shape and their cores can be either solid or subsolid. Nodules are common in lungs, but not all of them are malignant. READ MORE

  5. 4. Calving Events Detection and Quantification from Time-lapse Images : A Case Study of Tunabreen Glacier, Svalbard

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Sigit Adinugroho; [2015]
    Keywords : ;

    Abstract : A fully automated method for detecting and measuring calving regions of a glacier is an important tool to gather massive statistical data of calving events. A new framework to achieve the goals is presented in this thesis. First, time-lapse images are registered to the first image in the set. READ MORE

  6. 5. Automatic Segmentation of Tissues in CT Images of the Pelvic Region

    University essay from Linköpings universitet/Institutionen för medicinsk teknik; Linköpings universitet/Tekniska högskolan

    Author : Martin Kardell; [2014]
    Keywords : Image segmentation; Computed tomography; Pelvic region; Prostate; Thresholding; Region growing; Atlas segmentation; Deformable models;

    Abstract : In brachytherapy, radiation therapy is performed by placing the radiation source into or very close to the tumour. When calculating the absorbed dose, water is often used as the radiation transport and dose scoring medium for soft tissues and this leads to inaccuracies. READ MORE