Title: Comparative analysis on seed point placement and magnitude-based visual enhancement for streamlines generation

Authors: Yusman Azimi Yusoff; Farhan Mohamed; Mohd Shahrizal Sunar; Ali Selamat; Nor Azrini Jaafar

Addresses: UTM-IRDA Media and Game Innovation Centre of Excellence (MaGICX), Institute of Human Centered Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia; School of Computing, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia ' UTM-IRDA Media and Game Innovation Centre of Excellence (MaGICX), Institute of Human Centered Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia; School of Computing, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia ' UTM-IRDA Media and Game Innovation Centre of Excellence (MaGICX), Institute of Human Centered Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia; School of Computing, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia ' UTM-IRDA Media and Game Innovation Centre of Excellence (MaGICX), Institute of Human Centered Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia; School of Computing, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia ' UTM-IRDA Media and Game Innovation Centre of Excellence (MaGICX), Institute of Human Centered Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia; School of Computing, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia

Abstract: This paper presents an improved seed point placement to locate initial seed points based on magnitude value. The vector field is separated in to grid to ensure the uniformity in generating streamlines and broader streamlines coverage, thus reducing poor visualisation information especially near to visualisation boundary. An evaluation using mean square error is conducted to evaluate the improvement in term of streamlines placement uniformity. Result shows that proposed method able to come out with lower mean square error value compared to evenly-spaced in across different separation distance, resulting better streamlines control to produce uniform visualisation result. Finally, the proposed method can be improved in many aspects to come out with a better visualisation result in two and possibly three dimension flow visualisation.

Keywords: metadata; seed point placement; seed point distribution; streamlines; streamlines enhancement; flow visualisation.

DOI: 10.1504/IJDET.2019.103362

International Journal of Digital Enterprise Technology, 2019 Vol.1 No.4, pp.388 - 404

Received: 09 Jan 2018
Accepted: 23 Jun 2018
Published online: 05 Nov 2019 *

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