Re-Scan Detection at Self-Check-Out Machines

An imaging system for operating an indicia reader, the imaging system comprising:

• the indicia reader, wherein the indicia reader has a scanning region and a controller communicatively coupled to a memory;
• and
• a microprocessor and computer-readable media storing machine readable instructions that, when executed, cause the microprocessor to:
• detect, by the controller, a first object in the scanning region;
• capture one or more images of the first object to create first image data associated with the first object, the first image data being stored in the memory;
• determine that a successful decode of an indicia associated with the first object has not occurred;
• responsive to the determining, retrieve the first image data associated with the first object from the memory;
• generate, using the first image data, an embedding of the first image data;
• detect by the controller, a second object in the scanning region;
• retrieve one or more support samples from an image database, wherein each support sample is an embedding of second image data associated with an object class based on the second object;
• compare the embedding of the first image data to each support sample of the one or more support samples;
• and
• responsive to determining, based on the comparing, that the embedding of the first image data does not match any of the each support sample of the one or more support samples, perform at least one of:
• (i) generating an alert, (ii) preventing a transaction from being finalized, (iii) preventing a subsequent scan event, or (iv) logging a determination of an object mismatch.