Sökning: "local image variance"

Hittade 5 uppsatser innehållade orden local image variance.

  1. 1. Optimization of Non-Local Means filtration for Cone Beam Computed Tomography

    H-uppsats,

    Författare :Lina Berneryd; [2019-07-03]
    Nyckelord :Matematik; Grundläggande vetenskaper; Mathematics; Basic Sciences;

    Sammanfattning : Cone Beam Computed Tomography (CBCT) is a medical imaging technique used to visualize the internals of an object from a set of X-ray images. The X-ray images are taken with a cone shaped X-ray beam at many angles around the object being visualized. The images are then back projected through a volume forming a 3D representation of the object. LÄS MER

  3. 2. The Optimal Hardware Architecture for High Precision 3D Localization on the Edge. : A Study of Robot Guidance for Automated Bolt Tightening.

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Jacob Edström; Pontus Mjöberg; [2019]
    Nyckelord :Computer Vision; Robot Guidance; Automated Assembly; Edge Computing; Cloud Computing; Cluster Computing; Deep Learning; Industrial Robots; Flexible Automation.; Datorseende; Robotstyrning; Automatiserad Montering; Edge-beräkning; Molnberäkning; Klusterberäkning; Djupinlärning; Industrirobotar; Flexibel Automatisering.;

    Sammanfattning : The industry is moving towards a higher degree of automation and connectivity, where previously manual operations are being adapted for interconnected industrial robots. This thesis focuses specifically on the automation of tightening applications with pre-tightened bolts and collaborative robots. LÄS MER

  4. 3. Automating Geographic Object-Based Image Analysis and Assessing the Methods Transferability : A Case Study Using High Resolution Geografiska SverigedataTM Orthophotos

    Magister-uppsats, Högskolan i Gävle/Samhällsbyggnad, GIS

    Författare :Isak Hast; Asmelash Mehari; [2016]
    Nyckelord :automatic training area selection; scale parameterisation; multiresolution segmentation; classification rule-sets; positional accuracy;

    Sammanfattning : Geographic object-based image analysis (GEOBIA) is an innovative image classification technique that treats spatial features in an image as objects, rather than as pixels; thus resembling closer to that of human perception of the geographic space. However, the process of a GEOBIA application allows for multiple interpretations. LÄS MER

  5. 4. Developing a Semi-Automatised Tool for Grading Brain Tumours with Susceptibility-Weighted MRI

    Master-uppsats, Umeå universitet/Institutionen för fysik; Umeå universitet/Radiofysik; Umeå universitet/Centrum för medicinsk teknik och fysik (CMTF)

    Författare :Maria Duvaldt; [2015]
    Nyckelord :Glioma grading; astrocytoma; suceptibility-weighted imaging; SWI; local image variance; intratumoural susceptibility signal; ITSS;

    Sammanfattning : Gliomas are a common type of brain tumour and for the treatment of a patient it is important to determine the tumour’s grade of malignancy. This is done today by a biopsy, a histopathological analysis of the tumourous tissue, that is classified by the World Health Organization on a malignancy scale from I to IV. LÄS MER

  7. 5. Evaluation of pixel based and object based classification methods for land cover mapping with high spatial resolution satellite imagery, in the Amazonas, Brazil

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Linnea Jonsson; [2015]
    Nyckelord :support vector machine; maximum likelihood; SPOT-5; classification; geography; physical geography; RBF-kernel; OBIA; multiresolution segmentation; Earth and Environmental Sciences;

    Sammanfattning : In the state of Acre, Brazil, there is ongoing land use change, where inhabitants of this part of the Amazonian rainforest practice shifting agriculture. Practicing this type of agriculture is, according to the SKY Rainforest Rescue organization, damaging to forest ecosystems. LÄS MER