首页> 外文会议>Conference on Storage and Retrieval for Media Databases 2001 Jan 24-26, 2001, San Jose, USA >Object-Based Video Description: From Low Level Features to Semantics
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Object-Based Video Description: From Low Level Features to Semantics

机译:基于对象的视频描述:从低级功能到语义

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摘要

We present a generic model to describe image and video content by a combination of semantic entities and low level features for semantically meaningful and fast retrieval. The proposed model includes semantic entities such as Object, Event and Actors to express relations between the first two. The use of Actors entity increases the efficiency of certain types of search, while the use of semantic and linguistic roles increases the expression capability of the model. The model also contains links to high-level media segments such as actions and interactions, and low level media segments such as elementary motion and reaction units, as well as low-level features such as motion parameters and trajectories. Based on this model, we propose image and video retrieval combining semantic and low-level information. The retrieval performance of our system is tested by using query-by-annotation, query-by-example, query-by-sketch, and a combination of them.
机译:我们提出了一个通用模型,通过语义实体和低级特征的组合来描述图像和视频内容,以实现语义上的有意义和快速的检索。所提出的模型包括语义实体,例如对象,事件和参与者,以表达前两者之间的关系。使用Actor实体可以提高某些类型搜索的效率,而使用语义和语言角色则可以提高模型的表达能力。该模型还包含指向诸如动作和交互之类的高级媒体段的链接,以及诸如基本运动和反作用单元之类的低级媒体段的链接,以及诸如运动参数和轨迹之类的低级特征的链接。在此模型的基础上,我们提出了将语义和底层信息相结合的图像和视频检索。我们通过使用按注释查询,按示例查询,按草图查询以及它们的组合来测试我们系统的检索性能。

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