Patent ID: 11948183
Assignee: EVERSEEN LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. A system for detecting a shopping cart-based loss incident in a retail store, the system comprising:
a processing system configured to:
receive and decode a video stream comprising one or more video frames from a video camera to obtain one or more motion vectors therefrom,
wherein the video stream includes an H.264 video stream encoded using the one or more motion vectors;

filter the one or more motion vectors according to a position and an orientation of each motion vector from the one or more motion vectors to extract one or more substantially horizontal orientated motion vectors located in a pre-defined region of a cash register lane;
compare a sum of intensity values of the extracted substantially horizontal orientated motion vectors with a threshold value;
detect motion of a shopping cart within the pre-defined region of the cash register lane bounded by a pre-defined tracking start point and a pre-defined tracking end point when the sum of intensity values exceeds the threshold value;
track a location of the shopping cart till the shopping cart reaches the pre-defined tracking end point, upon detection of motion of the shopping cart;
dynamically classify the shopping cart in one of a plurality of classification statuses, based on recognition of one or more items present in the shopping cart, till the shopping cart reaches the pre-defined tracking end point; and
generate an alert signal, when the shopping cart is classified in a pre-defined classification status from the plurality of classification statuses, at an alert threshold point between the pre-defined tracking start and end points.