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Improvement of Methods for Detection and Classification of Damages in Fingerprint Images
Foltyn, Lukáš ; Heidari, Mona (oponent) ; Kanich, Ondřej (vedoucí práce)
This study aims to improve existing methods for detecting and classifying damage in fingerprint images by leveraging previous works conducted by students at Brno University of Technology. The work is built upon three applications: line damage (scars, hairs, creases) generator, moisture generator, and application containing multiple different models for fingerprint damage detection and classification. The three best-performing models - Faster-RCNN ResNet50, Faster-RCNN ResNet101, and CenterNet ResNet101 - were selected for further improvement. The work describes the creation of a dataset using undamaged synthetic fingerprint images, with the aforementioned damages introduced artificially. Efforts to improve the prediction accuracy of the models were based on more accurate annotation of bounding boxes and adjusting the hyperparameters. While the work yielded some improvements, the results are not consistently successful across all models and damage types.
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