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In this paper, we present a method for detecting individuals in crowd by clustering a group of feature points belonging to the same person. In our approach, a feature point is considered to contain three attributes: the motion trajectory in video sequence, the sparse local appearance around point in current frame, and the structure relationship with body center related with local appearance. We exploit...
Sperm motility analysis is an indispensable test in male infertility diagnosis. The current microscopic method cannot select the sperm of specific velocity for further in vitro Fertilization (IVF) usage or research purposes. Here, we report a novel and simple microfluidic device capable of balancing sperm's swimming speed with local flow velocity. The results suggested that sperm motility was quantitatively...
Existing face liveness detection algorithms adopt behavioural challenge-response methods that require user cooperation. To be verified live, users are expected to obey some user unfriendly requirement. In this paper, we present a multispectral face liveness detection method, which is user cooperation free. Moreover, the system is adaptive to various user-system distances. Using the Lambertian model,...
This study examined the effects of human redundancy arrangements on performance in the execution of computerized emergency operating procedures. It was found that there was significant difference in completion time but no significant differences in error rate or subjective workload between single-operator and two-operator setups. For the two-operator setup, an unbalanced workload was found. Team completion...
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