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Telfor Journal
2019, vol. 11, br. 1, str. 30-34
jezik rada: engleski
vrsta rada: neklasifikovan
doi:10.5937/telfor1901030N


Radiography calibration marker detection using Hough transformation
(naslov ne postoji na srpskom)

Projekat

Razvoj dijaloških sistema za srpski i druge južnoslovenske jezike (MPNTR - 32035)
Razvoj multivarijabilnih metoda za analitičku podršku biomedicinskoj dijagnostici (MPNTR - 32040)

Sažetak

(ne postoji na srpskom)
In this paper we analyse the possibility of simple detection of circular radiography markers. To detect the marker, we utilised the Hough transform. Two approaches were analysed: with detecting image edges and without image edge detection where pixel gradient was used in the Hough voting process, i.e. to increase the accumulator values. Approaches were evaluated on 13 clinical radiography images. It was shown that the approach that detects image edges spatially matches the reference circles only 0.22 % less than manual annotation values, whereas the approach that uses just the gradient magnitudes spatially matches the reference circles 3.2 % less than manual annotations.

Ključne reči

digital radiography; image delineation; magnification detection; radiography marker

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