Method for detecting and classifying events of a s

专利名称：Method for detecting and classifying events

of a scene that include firing threat typeevents

发明人：Thierry Midavaine,Olivier Garin申请号：US15110937申请日：20150205公开号：US09953226B2公开日：20180424

专利附图：

摘要：The subject of the invention is a method for detecting and classifying events ofa scene by means of a single-pupil imaging system equipped with a VisNIR detector in the

0.6 μm-1.1 μm band and with an SWIR detector, which comprises steps of acquiringsynchronized VisNIR and SWIR successive 2D images, of displaying the VisNIR images, andof processing these images, which consists in: comparing the SWIR images so as todetermine, for each pixel, the variation in illumination from one SWIR image to anotherand the peak value of these SWIR illuminations, if this variation in SWIR illumination isgreater than a threshold, then an event associated with said pixel is detected and: itsdate, its temporal shape and its duration are determined, in the VisNIR images, thecoordinates are determined of the corresponding pixel for which: the variation in theillumination from one VisNIR image to another and the peak value of these VisNIRilluminations are calculated, and these variations in SWIR and VisNIR illumination and theirpeak values are compared so as to estimate a temperature of the event, the distance ofthe corresponding point of the scene is estimated so as to calculate the intensity of theevent on the basis of the SWIR and VisNIR illuminations and on the basis of this distance,the total energy of the event is estimated on the basis of its temporal shape and of itsintensity, the event is classified as a function of its duration, its temperature, its intensityand its energy, the previous steps are repeated for another pixel of the SWIR images.

申请人：THALES

地址：Courbevoie FR

国籍：FR

代理机构：Baker & Hostetler LLP

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