| 摘要 |
An inspection system and method for optically inspecting substantially the entire circumference of a cylindrical surface (12), such as a cigarette is provided. The system includes first and second moveable supports (10, 20) for supporting and transporting the cigarette so that a first side "T" of the cylindrical surface of the cigarette is presented to a first visual inspection apparatus (24) and a second side B, which includes at least those portions of the cylindrical surface of the cigarette not included in the first side, is presented to a second visual inspection apparatus (14). Each visual inspection apparatus includes an illumination source (132) for illuminating the presented side of the cigarette's surface. Each illumination source is configured to direct light onto the cigarette's surface substantially in the direction of the longitudinal axis of the cigarette at a low, acute angle OCI with respect to the longitudinal axis. An image of each presented side of the cigarette is captured using an image capture device, which is preferably a time domain and integration (TDI) camera (14, 24). The system also includes multiple inspection system processors for processing the captured images.
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