Naslov
Gradient of B-splines in Volume Rendering

Autori
Mihajlović, Željka ; Budin, Leo ; Radej, Joško

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference, MELECON 2004 / Matijasevic, M. ; Pejcinovic, B. ; Tomsic, Z. ; Butkovic, Z. - Zagreb, 2004, 239-242

Skup
12th IEEE Mediterranean Electrotechnical Conference, MELECON 2004

Mjesto i datum
Dubrovnik, Hrvatska, 12.05.2004. - 15.05.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
reconstruction; gradient; B-splines; volume rendering

Sažetak
This paper deals with surface reconstruction and the gradient reconstruction in the volume rendering. In the volume rendering procedure, reconstruction according discrete set of samples is required. Due to the reconstruction procedure alias artifacts, in the final image, could not be neglected. In this paper we focus our attention on the gradient reconstruction based on the surface reconstruction. For the surface reconstruction we use the cubic B-splines and for the gradient reconstruction corresponding derivative. If the noise is present in the input data the approximation B-spline is used, and the interpolation B-spline is used for the input signal without the noise. The shading procedure requires normal estimation. Two approaches are used for normal estimation. The classic approach for normal estimation is central difference calculation, and we propose derivative calculation of the reconstruction B-spline function. We show that calculation of the normal vector has important influence on the alias artifacts in the result.

Izvorni jezik
Engleski

Znanstvena područja
Računarstvo

POVEZANOST RADA