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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 1 to 2 of 2 (0.055 seconds)

Spelling suggestions: "subject:"image artifacts"" "subject:"lmage artifacts""

1

Optimization of Fast MR Imaging Technologies using the Case-PDM to Quantitatively Assess Image Quality

Miao, Jun 08 March 2013 (has links)
No description available.
Biomedical Engineering
Medical Imaging
Perceptual difference model
Image quality
Image artifact
Magnetic Resonance Imaging
Reconstruction Algorithm
Observer Study
2

Odstraňování artefaktů JPEG komprese obrazových dat / Removal of JPEG compression artefacts in image data

Lopata, Jan January 2014 (has links)
This thesis is concerned with the removal of artefacts typical for JPEG im- age compression. First, we describe the mathematical formulation of the JPEG format and the problem of artefact removal. We then formulate the problem as an optimization problem, where the minimized functional is obtained via Bayes' theorem and complex wavelets. We describe proximal operators and algorithms and apply them to the minimization of the given functional. The final algorithm is implemented in MATLAB and tested on several test problems. 1

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