A system for continuously imaging a surface of an object is provided. The system includes a drum mounted to a support frame and having an inner periphery and a hollow body for receiving the object therethrough. The hollow body has input end and output end sections, and a central rotation axis extending through the input and output end sections. The drum is drivable to rotate about the central rotation axis in a conveying mode. The system includes an optical assembly including a light source and a detector mounted to the drum, such that the optical assembly rotates along with the drum in the conveying mode. The system also includes a processor configured for processing a signal representative of a resulting light emanating from the object, thereby continuously generating an unwrapped image of the surface of the object and planarly representing the surface of the object.