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Coregistration of DKI MRI data with high b-values
Krejčí, Ladislav ; Gajdoš, Martin (referee) ; Vojtíšek, Lubomír (advisor)
Magnetic resonance (MRI), DKI data, DTI data, CHARMED b-value, coregistration, voxels, image processing, registration methods, registration software
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Coregistration of DKI MRI data with high b-values
Krejčí, Ladislav ; Gajdoš, Martin (referee) ; Vojtíšek, Lubomír (advisor)
This semestral thesis deals with several options of medical images registration. Basic properties of DKI data are presented in the begining. In the following chapters it is focused on methods, which are removing motion distortion and geometrical inaccuracies. These methods are oversampling, transformation smoothing and optimalization. Software doing registration itself is also covered in this thesis. Methods of comparing registration success rates are described in the end.
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Coregistration of diffusion weighted MRI data with high b-values
Špaček, Vojtěch ; Říha, Pavel (referee) ; Vojtíšek, Lubomír (advisor)
This bachelor thesis deals with the coregistration of diffusion-weighted MRI data with high b-values. The aim is to compare selected coregistration methods on real data and to quantify the quality of the output. The theoretical part presents the principle of diffusion imaging, the effect of b-value on the image and different methods of data preprocessing with a focus on the possibilities of coregistration of images with varying contrast. In addition, available software tools and methods for assessing the quality of coregistration are introduced. In the practical portion of the paper, preprocessing of diffusion data, including coregistration by the selected methods, is performed and the quality is analyzed using statistical measures.
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Coregistration of DKI MRI data with high b-values
Krejčí, Ladislav ; Gajdoš, Martin (referee) ; Vojtíšek, Lubomír (advisor)
Magnetic resonance (MRI), DKI data, DTI data, CHARMED b-value, coregistration, voxels, image processing, registration methods, registration software
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Coregistration of DKI MRI data with high b-values
Krejčí, Ladislav ; Gajdoš, Martin (referee) ; Vojtíšek, Lubomír (advisor)
This semestral thesis deals with several options of medical images registration. Basic properties of DKI data are presented in the begining. In the following chapters it is focused on methods, which are removing motion distortion and geometrical inaccuracies. These methods are oversampling, transformation smoothing and optimalization. Software doing registration itself is also covered in this thesis. Methods of comparing registration success rates are described in the end.
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Coregistration of airborne laser scanning data and aerial images
Pokorný, Tomáš ; Potůčková, Markéta (advisor) ; Hofman, Petr (referee)
Coregistration of airborne laser scanning data and aerial images Abstract This thesis is dealing with the co-registration of aerial laser scanning and aerial images. Theoretical part with research of current methods puts emphasis on methods suitable for remote sensing datasets. Part of the thesis is about pre-processing data for co-registration and DSM production. Selection of co- registration methods for remote sensing is based on previous researches. Selected co-registration methods are applied on datasets from EuroSDR research project and ČÚZK dataset. Application is realised by programming codes and functions that were created for this purpose in Matlab. Possibilities of usage, advantages and disadvantages of methods are being mentioned in the next parts of the thesis with emphasis on time of the computation and final accuracy. The function programmed in Matlab allows comparison of co-registration methods and allows the user to decide which of the co- registration methods to use on input datasets. Discussion section describes the possibilities of method extensions and problematic parts across the whole co-registration process. Keywords: co-registration, laser, scanning, images, photogrammetry, remote sensing, coordinate, image matching.
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