A refrigerator appliance may include a cabinet, a door, an image module, and a drawer assembly. The cabinet may include an inner liner defining a chilled chamber. The door may be rotatably hinged to the cabinet to provide selective access to the chilled chamber. The image module may be mounted to the cabinet and have a field of view within the chilled chamber. The drawer assembly may be disposed within the field of view of the image module. The drawer assembly may include an assembly frame supported on the inner liner, a slidable drawer movably attached to the assembly frame to move relative thereto, and a plurality of weight sensors mounted on the assembly frame apart from the slidable drawer to detect a weight of one or more objects received on the drawer assembly.