Original scientific paper

https://doi.org/10.21278/TOF.482058923

Hierarchical Spline in the Representation of a Model with an Extremely Rough Surface

Andrijana Ćurković orcid.org/0000-0003-2340-5767 ; Faculty of Science, University of Split, Split, Croatia
Milan Ćurković orcid.org/0000-0003-0100-7928 ; FESB, Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture, University of Split, Split, Croatia
Domagoj Samardžić ; FESB, Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture, University of Split, Split, Croatia

Abstract

This paper presents the application of hierarchical splines on the representation of models with extremely rough surfaces. The displacement between the smooth spline and the rough shape is stored as a set of images, where the displacement scalar is approximated using all three channels of the image (red, green, and blue). This type of surface representation allows easy and fast scientific analysis, interactive web display, and a significant reduction in the size of the extremely rough shapes. By using hierarchical splines over B-spline in combination with a compact displacement representation, we aim to achieve the same displacement quality of the whole surface, taking care that the model does not require much memory and is suitable for fast rendering. The focus of the study is on models from cultural heritage, without diminishing the importance of applying the approach to models from other areas.

Keywords

hierarchical spline; displacement mapping; cultural heritage; downsizing memory space; rough surface

Hrčak ID:

316390

URI

https://hrcak.srce.hr/316390

Publication date:

25.2.2024.

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