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Video event processing method based on and-or graph

A technology of video event and processing method, which is applied in the field of video event processing based on AND or graph, can solve problems such as inability to identify and judge events, and achieve the effect of reducing work intensity

Inactive Publication Date: 2014-03-26
BEIHANG UNIV
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  • Claims
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Problems solved by technology

However, the solutions in the prior art cannot judge the occurrence of events based on some obvious actions or object recognition for video events with a long shooting distance and a combination of multiple people and multiple actions.

Method used

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  • Video event processing method based on and-or graph
  • Video event processing method based on and-or graph
  • Video event processing method based on and-or graph

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Embodiment Construction

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] Since the human visual system usually uses a decomposition method to understand things, the ins and outs of events can be divided into three stages: the beginning period, the progress period and the end period, corresponding to the three time periods before, during and after. Since each time period contains a series of actions, it can be described in the form of an AND or graph, which is a tree-like graph structure and is often used to solve ...

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Abstract

The invention discloses a video event processing method based on an and-or graph. The method includes defining a video event needed to be processed to be a motion combination participated by a single person or multiple persons and having connection, and defining node type, node distribution mode and relation among nodes of the and-or graph in the video event; on the basis of the defined node type, node distribution mode and relation among the nodes of the and-or graph, expressing the video event; using an inference method combining bottom-up and top-down to infer the occurrence process of an event in the video event. By the video event processing method, a commentary text of video content can be automatically generated according to an inference result of the video event, so that on one hand, a video editor or a video commentator can be helped to reduce working intensity in the field of video rebroadcast, and on the other hand, a good video content understanding method is provided for video retrieval related application.

Description

technical field [0001] The invention relates to the technical field of video processing, in particular to a video event processing method based on an AND-OR graph. Background technique [0002] At present, understanding and analyzing human motion in video is a very hot research field in recent years, such as video surveillance, video rebroadcasting, content-based video indexing and retrieval, and other applications that rely on the recognition and analysis of video events. In order to complete this work, some key technologies have achieved good research results, including object tracking, human action recognition, human behavior classification, etc. The results of these key technologies are the premise of video event understanding. Since the human mind is more inclined to understand what the people in the video are doing, giving the story line of the video event can attract people's attention more than just giving a few words. Especially in the application field of TV broad...

Claims

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Application Information

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IPC IPC(8): G06F9/45
Inventor 陈小武赵沁平蒋恺张宇
Owner BEIHANG UNIV
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