Streamline similarity analysis using bag-of-features

Yifei Li; Chaoli Wang; Ching-Kuang Shene

doi:10.1117/12.2038253

3 February 2014 Streamline similarity analysis using bag-of-features

Yifei Li, Chaoli Wang, Ching-Kuang Shene

Proceedings Volume 9017, Visualization and Data Analysis 2014; 90170N (2014) https://doi.org/10.1117/12.2038253
Event: IS&T/SPIE Electronic Imaging, 2014, San Francisco, California, United States

Abstract

Streamline similarity comparison has become an active research topic recently. We present a novel streamline similarity comparison method inspired by the bag-of-features idea from computer vision. Our approach computes a feature vector, spatially sensitive bag-of-features, for each streamline as its signature. This feature vector not only encodes the statistical distribution of combined features (e.g., curvature and torsion), it also contains the information on the spatial relationship among different features. This allows us to measure the similarity between two streamlines in an efficient and accurate way: the similarity between two streamlines is defined as the weighted Manhattan distance between their feature vectors. Compared with previous distribution based streamline similarity metrics, our method is easier to understand and implement, yet producing even better results. We demonstrate the utility of our approach by considering two common tasks in flow field exploration: streamline similarity query and streamline clustering.

Citation Download Citation

Yifei Li, Chaoli Wang, and Ching-Kuang Shene "Streamline similarity analysis using bag-of-features", Proc. SPIE 9017, Visualization and Data Analysis 2014, 90170N (3 February 2014); https://doi.org/10.1117/12.2038253

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