Automatic Reasoning about Causal Events in Surveillance Video

被引：0

作者：

Neil M. Robertson

Ian D. Reid

机构：

[1] Heriot-Watt University,School of Engineering and Physical Sciences

[2] University of Oxford,Department Engineering Science

来源：

EURASIP Journal on Image and Video Processing | / 2011卷

关键词：

Reasoning Process; Causal Reasoning; Semantic Label; Reasoning Engine; Urban Scene;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We present a new method for explaining causal interactions among people in video. The input to the overall system is video in which people are low/medium resolution. We extract and maintain a set of qualitative descriptions of single-person activity using the low-level vision techniques of spatiotemporal action recognition and gaze-direction approximation. This models the input to the "sensors" of the person agent in the scene and is a general sensing strategy for a person agent in a variety of application domains. The information subsequently available to the reasoning process is deliberately limited to model what an agent would actually be able to sense. The reasoning is therefore not a classical "all-knowing" strategy but uses these "sensed" facts obtained from the agents, combined with generic domain knowledge, to generate causal explanations of interactions. We present results from urban surveillance video.

引用

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