Smoking detection method based on two-dimensional curved surface fitting

A detection method and technology of two-dimensional curved surfaces, which are applied in the fields of instruments, character and pattern recognition, computer parts, etc., can solve the problems of inconspicuous smoke and inability to meet the real-time performance of the system, so as to reduce product costs, be feasible and simple, and reduce errors. The effect of reporting
CN109800640APending Publication Date: 2019-05-24TIANJIN UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2019-05-24

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Abstract

The invention discloses a smoking detection method based on two-dimensional curved surface fitting, and the method comprises the following steps: obtaining 68 key points, selecting 7 specific key points from the 68 key points, drawing a five-sense-organ frame based on the specific key points, and determining a smoking region of interest; carrying out image graying processing on the region of interest of smoking to obtain a binary image, carrying out connected region extraction on the basis of the binary image to obtain a rectangular region, and establishing a two-dimensional Gaussian functionon the rectangular region; substituting the point and the gray value of the connected region into a two-dimensional Gaussian function, fitting by using a least square method to obtain the variance ofthe central point and the bright spot, determining the central point and the radius of the bright spot according to the calculated central point and the variance, and further judging according to a threshold value to realize smoking detection. According to the invention, the smoking behavior of a driver in the driving process is detected from the perspective of vision, a warning prompt is given out, and various requirements in practical application are met.
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Description

technical field

[0001] The invention relates to the field of behavior detection of visual features, in particular to a smoking detection method based on two-dimensional surface fitting. Background technique

[0002] In recent years, with the development of the economy, the number of vehicles per capita in the world has increased year by year, and the incidence of traffic accidents has also increased. Traffic accidents have become a common concern of the society. Among the causes of many traffic accidents, in addition to overloading, speeding and drunk driving, driver fatigue, smoking and distracted behaviors such as playing with mobile phones are also very common safety hazards. However, if the abnormal behavior of the driver during driving can be detected in advance and corresponding warnings are given in advance, then the driver can be aware of possible dangers, thereby reducing the risk of driving, thereby reducing the occurrence of traffic accidents .

[0003] Most of ...

Claims

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