Title: Typové zařazení hradu Skála u Přeštic
Other Titles: Typological classification of the Skála castle, near Přeštice
Authors: Gabriel, František
Kursová, Lucie
Citation: VČELÁK, P., KRYL, M., KRATOCHVÍL, M., KLEČKOVÁ, J. Identification and classification of DICOM files with burned-in text content. International Journal of Medical Informatics, 2019, roč. 126, č. JUN 2019, s. 128-137. ISSN 1386-5056.
Issue Date: 2019
Publisher: Elsevier
Document type: článek
URI: 2-s2.0-85063996088
ISSN: 0231-5823
Keywords in different language: castle;Middle Ages;castle core
Abstract: Označení ganerbenburg považují někteří autoři za dispoziční typ hradů. Článek upozorňuje na chybnost tohoto přístupu a doporučuje užívání jiného druhového jména a jeho definici.
Abstract in different language: Background: Protected health information burned in pixel data is not indicated for various reasons in DICOM. It complicates the secondary use of such data. In recent years, there have been several attempts to anonymize or de-identify DICOM files. Existing approaches have different constraints. No completely reliable solution exists. Especially for large datasets, it is necessary to quickly analyse and identify files potentially violating privacy. Methods: Classification is based on adaptive-iterative algorithm designed to identify one of three classes. There are several image transformations, optical character recognition, and filters; then a local decision is made. A confirmed local decision is the final one. The classifier was trained on a dataset composed of 15,334 images of various modalities. Results: The false positive rates are in all cases below 4.00%, and 1.81% in the mission-critical problem of detecting protected health information. The classifier's weighted average recall was 94.85%, the weighted average inverse recall was 97.42% and Cohen's Kappa coefficient was 0.920. Conclusion: The proposed novel approach for classification of burned-in text is highly configurable and able to analyse images from different modalities with a noisy background. The solution was validated and is intended to identify DICOM files that need to have restricted access or be thoroughly de-identified due to privacy issues. Unlike with existing tools, the recognised text, including its coordinates, can be further used for de-identification.
Rights: Plný text je přístupný v rámci univerzity přihlášeným uživatelům.
© Elsevier
Appears in Collections:Články / Articles (NTIS)
Články / Articles (KIV)

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/35858

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