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A Method for Recognition of Abnormal Personnel Behavior Based on Space Transformation

A recognition method and a technology of space conversion, which is applied in the field of abnormal behavior recognition of personnel based on space conversion, can solve the problems of high computational complexity and achieve the effects of low complexity, reduced complexity, and small memory space

Active Publication Date: 2012-02-22
北京蓝色星河软件技术发展有限公司
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Problems solved by technology

The method based on probabilistic network has better robustness to small changes in time and space of behavior sequence, which is the reason for its wide application, but the disadvantage is high computational complexity

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  • A Method for Recognition of Abnormal Personnel Behavior Based on Space Transformation
  • A Method for Recognition of Abnormal Personnel Behavior Based on Space Transformation
  • A Method for Recognition of Abnormal Personnel Behavior Based on Space Transformation

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Embodiment Construction

[0034] The present invention will be further explained below in conjunction with the accompanying drawings of the specification.

[0035] The present invention is a method for identifying abnormal behaviors of persons based on space conversion. The workflow of the method is as follows: figure 1 Shown.

[0036] Step 1: Background modeling. The background model should be adapted to maintain a stable state in a short period of time, and it should be automatically adjusted according to changes in the external environment. The algorithm uses a time-interval frame extraction method to build this model, such as figure 2 Shown.

[0037] The background frame is obtained through the accumulation of video frames and the median filtering method. First determine a time interval (FR) to extract random frames, and then determine a total number of extracted frames FT to store the frame information required by the model; according to these accumulated frames, the pixels at the corresponding positio...

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Abstract

The invention belongs to the technical field of video image processing, in particular to a method for identifying abnormal behavior of people based on space transformation. The method steps are: background modeling, used to obtain a stable background that can adapt to the environment; foreground extraction, used to extract foreground information; using the background frame obtained by background modeling as the background, using the current frame and its For comparison, according to the setting of the threshold, the corresponding foreground binarized image is obtained; 3D space calibration is used to convert the 2D plane into a 3D height space; foreground behavior recognition is used to distinguish the abnormal behavior of the foreground information. The invention has high anti-interference and recognition accuracy; meanwhile, compared with other recognition algorithms realizing the same function, it has less computation and faster running time. The invention can greatly reduce the cost.

Description

Technical field [0001] The invention belongs to the technical field of video image processing, and particularly refers to a method for identifying abnormal behaviors of persons based on space conversion. Background technique [0002] At present, human behavior recognition is one of the most active research topics in the field of computer vision. Its core is to use image processing, computer vision, pattern recognition and other technologies to detect, identify, track people from image sequences and understand their behavior And description, it has a wide range of application prospects and potential economic value in advanced human-computer interaction, security monitoring, video conferencing, medical diagnosis, and content-based image storage and retrieval, which inspires a large number of domestic and foreign scientific researchers and Strong interest from related businesses. A large number of related research projects have been carried out in Europe and Japan abroad. Many dom...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06T7/00G06K9/68
Inventor 贺才广吕楠赵雄
Owner 北京蓝色星河软件技术发展有限公司
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