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

Claim 16:
17. A non-transitory computer readable medium configured to store a program causing a processing system of a computer to detect a cart-based loss incident in a retail store, said program configured to:
decode a video stream comprising one or more video frames 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.