Master's Thesis
Blood vessel segmentation in retinal image data
Final Thesis 2.07 MB Appendix 5.29 kBAuthor of thesis: Ing. Johana Vančurová
Acad. year: 2018/2019
Supervisor: Ing. Jan Odstrčilík, Ph.D.
Reviewer: Ing. Martin Mézl, Ph.D.
Abstract:This master´s thesis deals with blood vessel segmentation in retinal image data. The theoretical part is focused on the basic description of anatomy and physiology of the eye and methods of observing the back of the eye. This thesis also describes the principles of classical and convolutional neural networks and segmentation techniques that are used to segment blood vessel in retinal images. In the practical part, a segmentation method using convolutional neural network U-net is implemented. This neural network is trained on the three datasets. Two datasets include images from experimental video ophthalmoscope. Because it impossible to compare the results of these two datasets with any other methods of retinal blood vessel segmentation, U-net is trained on other dataset that is HRF database. This dataset includes fundus images. The results of testing on this dataset serves for comparing results with other methods of retinal blood vessel segmentation.
Experimental video ophthalmoscope, neuron, neural network, convolution, segmentation, U-net, fundus images
Date of defence
05.06.2019
Result of the defence
Defended (thesis was successfully defended)
Grading
B
Process of defence
Studentka prezentovala výsledky své práce a komise byla seznámena s posudky. Doc. Kolář položil dotaz na rozdílnost velikosti obrázků mezi testovanými datasety. Dále se dotazoval na formy augmentace, které byly v práci použity. Ing. Ronzhina se zeptala, zda studentka zkoumala jednotlivé příznaky, které neuronová síť hodnotila. Proč by učení na nekvalitních datech mohlo dávat dobré výsledky. Proč se pro učení sítí používají právě i nekvalitní data. Studentka obhájila diplomovou práci a odpověděla na otázky členů komise a oponenta.
Language of thesis
Czech
Faculty
Department
Study programme
Biomedical Engineering and Bioinformatics (BTBIO-F)
Field of study
Biomedical Engineering and Bioinformatics (F-BTB)
Composition of Committee
doc. Ing. Radim Kolář, Ph.D. (předseda)
Ing. Jan Odstrčilík, Ph.D. (místopředseda)
Ing. Marina Filipenská, Ph.D. (člen)
RNDr. Petr Fuchs, Ph.D. (člen)
Ing. Jiří Sekora, MBA (člen)
Supervisor’s report
Ing. Jan Odstrčilík, Ph.D.
Grade proposed by supervisor: A
Reviewer’s report
Ing. Martin Mézl, Ph.D.
Grade proposed by reviewer: C