Imaging used to reconcile cart weight discrepancy

A method of validating a transaction in a self-checkout system at a check-out location, the method comprising:

• weighing a plurality of items on a scale and tracking weight changes as one or more items are added to or removed from said scale;
• acquiring an image of each item placed on said scale with one or more image sensors;
• and
• using at least one processor:
• receiving an updated weight measurement of all items placed on said scale based on said weight change tracking,
• identifying each item placed on said scale based on said acquired image,
• determining an expected cumulative weight of all items placed on said scale based on said acquired image for each item, and
• comparing said expected cumulative weight with said updated weight measurement;
• identifying an item by its barcode pattern;
• and
• recommending using said barcode pattern to identify one or more items responsive to said comparing.

A non-transitory computer readable medium comprising instructions for use at a self-checkout at a retail establishment, the computer readable medium containing instructions that when executed by at least one processor cause the at least one processor to perform the following:

• receive an updated weight measurement of all items placed on a scale based on weight change tracking as one or more items are added to or removed from said scale;
• identify each item placed on said scale based on an acquired image of each item;
• determine an expected cumulative weight of all items placed on said scale based on said acquired image for each item;
• compare said expected cumulative weight with said updated weight measurement;
• identify an item by its barcode pattern;
• and
• recommend using said barcode pattern to identify one or more items responsive to said comparing.