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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Detecting a Partially Obscured Face in Image Data
 Kedra, David ; Sakin, Martin (referee) ; Goldmann, Tomáš (advisor)
This bachelor thesis deals with the analysis of problems related to detecting partially occluded faces in camera systems and discusses current machine learning detectors. The aim was to find solutions useful for detecting hardly visible faces. For this reason, artificial occlusions were generated into datasets for training the YOLOv7, YOLOv7-tiny and RetinaNet models. A computer application that uses these detectors is presented. The models are compared with existing solutions in terms of quality and speed. The trained models perform better on most test datasets. YOLOv7 is the most accurate on the modified WIDER FACE and UFDD datasets with average precisions of 86 % and 89 % at a minimum IoU of 50 %. On the third dataset with face masks, the existing detector RetinaFace outperformes the others. According to the speed/quality ratio, YOLOv7-tiny is the most effective.
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