Avtor/Urednik		Ikica, Andrej; Prelesnik, Uroš; Ikica, Branko
Naslov		Primerjava 2-D in 3-D slik vidnega polja v načinu "threshold" z deferenčno metodo
Prevedeni naslov		Comparing 2-D and 3-D campus images in threshold mode using difference method
Tip		članek
Vir		Inform Med Slov
Vol. in št.		Letnik 10, št. 1
Leto izdaje		2005
Obseg		str. 73-8
Jezik		slo
Abstrakt		In this article we present methods for processing campus data of a patient. The data is received from HFA (Humphrey Field Analyser). HFA works in two modes: threshold and screening mode. We focused our work on threshold mode, where HFA provides numerical values (intensities) of campus. We capture HFA data, process it and display it in 2-D or 3-D space. Possibility to compare different campuses of patients is essential to medical staff. It is a powerful tool for diagnostics. We developed two different methods for comparing campuses. First is based on comparison of two different images of campus, where difference is computed for every pixel in image. Second method compares image of a campus with an "optimal" surface of campus, campus of an average patient. Optimal surface varies with patient's age, so we have to modify it in a regular way.
Izvleček		V članku opisujemo metode za obdelavo podatkov o vidnem polju pacienta, ki jih vrača naprava HFA (Humphrey Field Analyser). Ta naprava deluje v dveh načinih: "threshold" in "screening". V članku opisujemo "threshold" način preiskave pacienta, kjer nam naprava vrača različne vrednosti vidnega polja v decibelih. Te podatke zajamemo, jih obdelamo ter prikažemo v dvo- ali tri-dimenzionalnem prostoru. Za zdravnika je ključnega pomena primerjava posameznih vidnih polj pacienta, saj lahko na podlagi le-te postavi pravilno diagnozo (glavkom, tumor...). Razvili smo dve metodi primerjave vidnih polj. Prva temelji na primerjavi poljubnih dveh slik vidnega polja, kjer v vsaki točki izračunamo medsebojno razliko vrednosti. Druga metoda temelji na primerjavi vidnega polja z optimalno ploskvijo. Ker se le-ta s starostjo spreminja, jo je potrebno prilagajati glede na starost pacienta.
Deskriptorji		VISUAL FIELDS PERIMETRY DIAGNOSIS, COMPUTER-ASSISTED