US 11,988,792 B2
Multimodal imaging sensor calibration method for accurate image fusion
Hung Kwan Chen, Pok Fu Lam (HK); and Chi Hung Tong, Pok Fu Lam (HK)
Assigned to Logistics and Supply Chain Multi Tech R&D Centre Limited, Pok Fu Lam (HK)
Appl. No. 17/255,136
Filed by Logistics and Supply Chain MultiTech R&D Centre Limited, Pok Fu Lam (HK)
PCT Filed Jun. 29, 2018, PCT No. PCT/CN2018/093675
§ 371(c)(1), (2) Date Dec. 22, 2020,
PCT Pub. No. WO2020/000367, PCT Pub. Date Jan. 2, 2020.
Prior Publication US 2021/0271922 A1, Sep. 2, 2021
Int. Cl. G01V 11/00 (2006.01); G01S 13/88 (2006.01); G06F 18/25 (2023.01); G06V 20/52 (2022.01)
CPC G01V 11/00 (2013.01) [G01S 13/886 (2013.01); G01S 13/887 (2013.01); G06F 18/253 (2023.01); G06V 20/53 (2022.01)] 29 Claims
OG exemplary drawing
 
1. A crowd surveillance device comprising:
a multi-sensor system connected to a processing device, wherein the processing device comprises
an image fusion module for receiving images from the multi-sensor system, transforming and fusing images into a fused image;
an image analytic module for extracting each individual target and identifying any concealed object on the individual target,
an alert triggering module for triggering an alert in the event a concealed object on the individual target is identified,
wherein the multi-sensor system comprises a passive millimetre wave sensor, a RGB imaging device, a depth sensor, and a thermal sensor, and
wherein the image analytic module is adapted to analyse a series of time lapse fused images generated by the image fusion module for tracing the individual target and identifying any concealed object on the individual target.