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Detecting fine-grained human action from video sequence is challenging. In this work, we propose to decompose this difficult analytic problem into two sequential tasks with increasing granularity. Firstly, we infer the coarse interaction status, i.e., which object is being manipulated and where the interaction occurs. To address the issue of frequent mutual occlusions during manipulation, we propose...
We propose to decompose the fine-grained human activ- ity analysis problem into two sequential tasks with increas- ing granularity. Firstly, we infer the coarse interaction sta- tus, i.e., which object is being manipulated and where it is. Knowing that the major challenge is frequent mutual oc- clusions during manipulation, we propose an "interaction tracking" framework in which hand/object...
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