Metody potlačení strukturního šumu typu spekle
Autor: | Teplý, Lukáš |
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Jazyk: | čeština |
Předmět: |
vlnkový filtr
Kuanův filtr mediánový filtr median filter Kuan filter Wiener filter spekle Doppler speckle geometric filter artifacts linear filter Ultrazvuk wavelet filter noise Frostův filtr artefakty geometrický filtr Lee filter Leeův filtr šum difusion filter lineární filtr Wienerův filtr Ultrasound Frost filter difuzní filtr |
Druh dokumentu: | masterThesis |
Popis: | Ultrasound investigation is one of meaningful imaging at present. Advantages of ultrasound are, that it hasn´t side effects as a rtg radiation and it is noninvasive. Ultrasound diagnostic is exploited in all branch of medicine (urology, cardiology, orthopeadist, gynecology etc.) to display organs, tissues and cavities of the human body. We use display in 2D, 3D and most modern display in 4D. We can encounter with many kinds of artifact. Artifacts are described more closely at 3rd chapter. Speckle noise deteriorates informative yiled of ultrasound picture. We try to remove speckle noise by simpler methods or more complex methods of filtration. These methods are described at 5th chapter. Programme for speckle filtering from pictures is part of this master´s thesis. |
Databáze: | Networked Digital Library of Theses & Dissertations |
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