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Register a new userSPIN: A High Speed, High Resolution Vision Dataset for Tracking and Action Recognition in Ping Pong
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Steven Schwarcz
Publication date
2019
fields
Informatics Engineering
and research's language is
English
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We introduce a new high resolution, high frame rate stereo video dataset, which we call SPIN, for tracking and action recognition in the game of ping pong. The corpus consists of ping pong play with three main annotation streams that can be used to learn tracking and action recognition models -- tracking of the ping pong ball and poses of humans in the videos and the spin of the ball being hit by humans. The training corpus consists of 53 hours of data with labels derived from previous models in a semi-supervised method. The testing corpus contains 1 hour of data with the same information, except that crowd compute was used to obtain human annotations of the ball position, from which ball spin has been derived. Along with the dataset we introduce several baseline models that were trained on this data. The models were specifically chosen to be able to perform inference at the same rate as the images are generated -- specifically 150 fps. We explore the advantages of multi-task training on this data, and also show interesting properties of ping pong ball trajectories that are derived from our observational data, rather than from prior physics models. To our knowledge this is the first large scale dataset of ping pong; we offer it to the community as a rich dataset that can be used for a large variety of machine learning and vision tasks such as tracking, pose estimation, semi-supervised and unsupervised learning and generative modeling.
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Air pollutants, such as particulate matter, strongly impact human health. Most existing pollution monitoring techniques use stationary sensors, which are typically sparsely deployed. However, real-world pollution distributions vary rapidly in space and the visual effects of air pollutant can be used to estimate concentration, potentially at high spatial resolution. Accurate pollution monitoring requires either densely deployed conventional point sensors, at-a-distance vision-based pollution monitoring, or a combination of both. This paper makes the following contributions: (1) we present a high temporal and spatial resolution air quality dataset consisting of PM2.5, PM10, temperature, and humidity data; (2) we simultaneously take images covering the locations of the particle counters; and (3) we evaluate several vision-based state-of-art PM concentration prediction algorithms on our dataset and demonstrate that prediction accuracy increases with sensor density and image. It is our intent and belief that this dataset can enable advances by other research teams working on air quality estimation.
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