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Detection of malignant melanoma in histological sample using deep neural networks
Frey, Adam ; Lokoč, Jakub (vedoucí práce) ; Straka, Milan (oponent)
The aim of this thesis is to create a classification method for detection of ma- lignant melanoma in high-resolution digital images. Deep convolutional neural networks were used for this task. At first, a short overview of malignant melanoma and ways to detect it is presented. Deep convolutional neural networks are also introduced with a special attention given to models used further in this work. Several ways to generate samples from the provided histological images are discussed, and several experiments are evaluated to decide how to maximize the accuracy of employed classification methods. The thesis then focuses on several neural network structures used for image classification and their possible utiliza- tion for the given task. The emphasis is laid on the transfer learning, a method used for modifying already trained models for different tasks. This method is then used for training several classifiers. Further on, several methods for the visualization of model results are discussed with some of them implemented. The experiments show promising results on par with other studies dealing with similar problems. Several possibilities for further development are listed in the conclusion.
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Gaussovské filtry s rotujícím jádrem
Vintr, Tomáš ; Martišek, Dalibor (oponent) ; Druckmüller, Miloslav (vedoucí práce)
Tato práce má za cíl vytvořit teorii gaussovských 1D filtrů s rotující maskou, díky které bychom měli být schopni naprogramovat algoritmus pro snížení šumu a zvýraznění struktury paprsků v digitálním obraze sluneční koróny. Část původního obrázku sluneční koróny a obrázků vzniklých filtrací pomocí algoritmů zde popsaných lze nalézt v příloze.
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