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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Automated Metadata Extraction From Document Images
 Křivánek, Jakub ; Vaško, Marek (referee) ; Kohút, Jan (advisor)
This Bachelor thesis addresses the problem of extracting structured data from scans of documents from Czech libraries. The aim of the thesis is to simplify the time-consuming manual process for librarians. I focused on creating datasets from documents of Czech libraries and on detecting metadata on these datasets. I created one dataset for books and another for periodicals. Detection was performed by classifying lines read from the documents. This utilized a fully connected neural network and a network employing a Transformer Encoder. The second method of metadata detection is based on object detection in document scans using the YOLOv8 model. Detection using the fully connected neural network achieves an F1 score of 0.83 on the book dataset and 0.78 on the periodicals dataset. The Transformer Encoder network achieves F1 scores of 0.84 on the book dataset and 0.59 on the periodicals dataset. The YOLO model achieves an F1 score of 0.86 (confidence at 0.549) on the book dataset and 0.7 (confidence at 0.336) on the periodicals dataset.
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