公开(公告)号：US20230417599A1

公开(公告)日：2023-12-28

申请号：US18318024

申请日：2023-05-16

Applicant: Axis AB

Inventor： Thomas WINZELL ,  Ann-Sofie Rase ,  Jesper Bengtsson ,  Tuong Lam

IPC: G01J5/02 ,  G01J5/0803 ,  G01J5/08 ,  G06T7/13 ,  G06T7/90

CPC classification number: G01J5/027 ,  G01J5/0803 ,  G01J5/0859 ,  G06T7/13 ,  G06T7/90 ,  G06T2207/20104 ,  G06T2207/30192

Abstract: A device for monitoring a heap of material, comprises circuitry for executing a plurality of functions. A region of interest function, in a thermal video stream captured by a thermal video camera, defines a region of interest covering the heap of material. A reference spatial property setting function, from pixels within a video frame of the thermal video stream, determines a spatial property of the heap of material; and sets the determined spatial property as a reference spatial property. A region of interest adjusting function determines a respective sample spatial property for regions in the thermal video stream; and adjusts the region of interest such that regions exhibiting a sample spatial property above a threshold are included by the region of interest. A temperature monitoring function over time and within the region of interest, monitors a temperature measure; and if it exceeds a predetermined threshold, generates an alarm event.