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Quality assessment of retinal images
Tvarůžek, Marek ; Jiřík, Radovan (referee) ; Kolář, Radim (advisor)
This thesis deals with the properties of retinal images, which are taken with a digital fundus camera. The basic image processing operations are described and applied on biomedical images. Based on these operations, the algorithm for image quality assessment is designed and implemented in Matlab. The quality metrics quantify the focusing. The proposed methods are tested on two datasets and the results are presented and discussed.
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Speckle noise suppression methods in ultrasound images
Tvarůžek, Marek ; Harabiš, Vratislav (referee) ; Mézl, Martin (advisor)
This diploma thesis deals with the methods of despeckling in ultrasound images. Ultrasound imaging and related artifacts are described in more details. Ultrasound imaging has its pros and cons, where speckle noise is a disadvantage to be solved. Models of origin of this specific noise are referred too. Practical part of this thesis aims on filtering speckled images by basic and advanced filtering methods as are linear filtering, median filtering, application of Frost filter, QGDCT, geometric filtering, anisotropic diffusion filtering and filtering based on wavelet transformation. Results are compared on the basis of objective criteria.
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Hardware realization of hospital information system
Tvarůžek, Marek ; Harabiš, Vratislav (referee) ; Fedra, Petr (advisor)
Aim of this work is orientation with hardware realization of the hospital system Clinicom and reading through of software possibilities Redundant Array of Independent Disks (RAID) in operating system CentOS. The practical part includes proposal and realization of disk array RAID type 1 and testing functionality during simulated failure of harddisk and restoration of functionality array during the next adding of harddisk. In the end of this bachelor thesis is compare of bit rate before and after creation of disk array RAID 1 via shell.
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Hardware realization of hospital information system
Tvarůžek, Marek ; Harabiš, Vratislav (referee) ; Fedra, Petr (advisor)
Aim of this work is orientation with hardware realization of the hospital system Clinicom and reading through of software possibilities Redundant Array of Independent Disks (RAID) in operating system CentOS. The practical part includes proposal and realization of disk array RAID type 1 and testing functionality during simulated failure of harddisk and restoration of functionality array during the next adding of harddisk. In the end of this bachelor thesis is compare of bit rate before and after creation of disk array RAID 1 via shell.
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Quality assessment of retinal images
Tvarůžek, Marek ; Jiřík, Radovan (referee) ; Kolář, Radim (advisor)
This thesis deals with the properties of retinal images, which are taken with a digital fundus camera. The basic image processing operations are described and applied on biomedical images. Based on these operations, the algorithm for image quality assessment is designed and implemented in Matlab. The quality metrics quantify the focusing. The proposed methods are tested on two datasets and the results are presented and discussed.
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|
|
Speckle noise suppression methods in ultrasound images
Tvarůžek, Marek ; Harabiš, Vratislav (referee) ; Mézl, Martin (advisor)
This diploma thesis deals with the methods of despeckling in ultrasound images. Ultrasound imaging and related artifacts are described in more details. Ultrasound imaging has its pros and cons, where speckle noise is a disadvantage to be solved. Models of origin of this specific noise are referred too. Practical part of this thesis aims on filtering speckled images by basic and advanced filtering methods as are linear filtering, median filtering, application of Frost filter, QGDCT, geometric filtering, anisotropic diffusion filtering and filtering based on wavelet transformation. Results are compared on the basis of objective criteria.
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