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Table-tennis umpiring presents many challenges where technology can be judiciously applied to enhance decision-making, especially in the service facet of the game. This paper presents a system to automatically detect and track the ball during table-tennis services to enable precise judgment over their legitimacy. The system comprises a suite of algorithms that adaptively exploit spatial and temporal...
We describe a method for generating an informative wide-view image using images captured by a moving camera. The generated image allows for events in the scene observed by the camera to be understood easily. Our method does not use 3D shape information explicitly. Instead, it employs the trajectory of feature points across multiple images and generates a composite image by taking into account the...
We proposes an unsupervised method to address video object extraction (VOE) in uncontrolled videos, i.e. videos captured by low-resolution and freely moving cameras. We advocate the use of dense optical-flow trajectories (DOTs), which are obtained by propagating the optical flow information at the pixel level. Therefore, no interest point extraction is required in our framework. To integrate color...
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