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Telfor Journal
2017, vol. 9, br. 1, str. 43-48
jezik rada: engleski
vrsta rada: neklasifikovan
doi:10.5937/telfor1701043O


Thresholding approach to radiography image processing acceleration
(naslov ne postoji na srpskom)
University of Novi Sad, Faculty of Technical Sciences, Department of Power, Electronics and Telecommunications, Novi Sad

e-adresa: vladimir.ostojic@uns.ac.rs, djordje.starcevic@uns.

Projekat

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

Sažetak

(ne postoji na srpskom)
An approach for detecting low-value Laplacian pyramid coefficients which can be used to accelerate radiography image processing is presented. The acceleration is achieved through modifying Laplacian pyramid construction algorithm. Detection of low-value coefficients in lower pyramid layers is based on corresponding low-value higher layer coefficients which are lower than the threshold. Detected coefficients are then omitted in pyramid calculation and by the radiography image enhancement algorithm. Clinical radiography images are used to evaluate the proposed approach. Structural similarity index (SSIM) is employed to measure similarity between images processed with and without proposed acceleration. Threshold value analysis shows that high image quality with a mean SSIM of 0.995 can be achieved with mean processing time reduction of 4.62 %.

Ključne reči

digital radiography; image processing; Laplacian pyramid; multi-scale methods

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