Well lid theft detection method

The invention discloses a well lid theft detection method. The method comprises the steps of obtaining a video sequence image containing a well lid from a monitoring device; determining an ellipse coinciding with the edge of the well lid through an image processing algorithm; performing calculation...

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Bibliographic Details
Main Authors MAO HE, HAN MINGYAN, ZOU ZEDONG, ZHOU JIAN, LONG XUEJUN
Format Patent
LanguageChinese
English
Published 22.02.2017
Subjects
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Summary:The invention discloses a well lid theft detection method. The method comprises the steps of obtaining a video sequence image containing a well lid from a monitoring device; determining an ellipse coinciding with the edge of the well lid through an image processing algorithm; performing calculation according to features in an ellipse range of the video sequence image to obtain a reference feature value; obtaining the video sequence image from the monitoring device at an interval of first preset time, and performing calculation according to the features in the ellipse range of the video sequence image to obtain a comparison feature value; performing comparison to obtain a difference value between the comparison feature value and the reference feature value, if the difference value is greater than a reference error value, adding 1 to an accumulator, and if the difference value is smaller than the reference error value, resetting the accumulator; and if a count of the accumulator exceeds a reference threshold, o
Bibliography:Application Number: CN20161812920