Patent ID: 11911799
Assignee: UNITED STATES POSTAL SERVICES
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 6:
7. A computer-readable, non-transitory storage medium storing instructions that, when executed by a hardware processor of a sensing system, cause the hardware processor to execute operations for detecting a delivery item using a light detector and a camera positioned at a sensing location along a moving surface that moves the delivery item that is on the moving surface, the operations comprising:
receiving a light status signal from the light detector, the light status signal having a first state if a light beam directed across the moving surface at the sensing location is detected at the light detector, which indicates absence of the delivery item, or a second state if the light beam is not detected at the light detector, which indicates presence of the delivery item;
receiving image data from the camera, the image data including images at the sensing location;
determining whether the light status signal is erroneous in indicating the absence of the delivery item or the presence of the delivery item at the sensing location based on the image data; and
modifying the light status signal when the light status signal is erroneous.