System and method for detecting scan irregularities at self-checkout terminals

A method for detecting a scan irregularity in scanning of one or more items by a user using a scanner, the method comprising:

• receiving a video stream of a scanning zone in real-time from at least one video camera, wherein the scanning zone is a region in a field of view of the scanner;
• processing each image frame of the video stream for detecting one or more visual scan intervals in one or more image frames, wherein the detected visual scan interval is a series of image frames in a time interval of the received video stream during which an item is identified, in the series of image frames, in the scanning zone scanned by the scanner;
• processing each detected visual scan interval based on a set of pre-defined rules to generate a processed visual scan interval which includes a scan action, and wherein the processed visual scan interval is generated based, at least, on a computed glass motion coverage of the one or more image frames of the visual scan interval;
• detecting a scan irregularity in the check-out process when an item identified, for scanning in the processed visual scan interval, is absent from a list of items generated by the scanner during the corresponding time interval;
• and
• providing an alert regarding the scan irregularity at a user computing device.

A non-transitory computer readable medium configured to store a program, that when executed by a processor of a computer, causes the processor to detect a scan irregularity in scanning of one or more items by a user using a scanner said program configured to:

• receive a video stream of a scanning zone in real-time from at least one video camera, wherein the scanning zone is a region in a field of view of a scanner;
• process each image frame of the video stream for detecting one or more visual scan intervals in one or more image frames, wherein the detected visual scan interval is a series of image frames in a time interval of the received video stream during which an item is identified, in the series of image frames, in the scanning zone scanned by the scanner;
• process each detected visual scan interval based on a set of pre-defined rules to generate a processed visual scan interval which includes a scan action, and wherein the processed visual scan interval is generated based, at least, on a computed glass motion coverage of the one or more image frames of the visual scan interval;
• detect a scan irregularity in the check-out process when an item identified, for scanning in the processed visual scan interval, is absent from a list of items generated by the scanner during the corresponding time interval;
• and
• provide an alert regarding the scan irregularity at a user computing device.