Measuring similarity between geo-tagged videos using largest common view

This Letter presents a novel problem for discovering similar trajectories based on the field of view of the video data. The problem is important for many societal applications such as grouping moving objects, classifying geo-images, and identifying the interesting trajectory patterns. Prior works consider only either spatial locations or spatial relationship between two line-segments. However, these approaches show a limitation to find similar moving objects with common views. In this Letter, the authors propose a new algorithm that can group both spatial locations and points of view to identify similar trajectories. The authors also propose novel methods that reduce the computational cost for the proposed work. Experimental results using real-world datasets demonstrate that the proposed approach outperforms prior work and reduces the computational cost.