| 摘要 |
<p>A radiographic inspection apparatus (11) for large containers, vehicles and structures having a movable frame (27) which can straddle the container (15) or object being inspected. The straddling frame has opposed parallel sides which carry a source (71) of penetrating radiation and a detector array (75). The source or sources and detectors are moved along the length of a container while radiographic image data is being sequentially recorded. By summing or collecting the sequence of data over the length of a container as the straddling frame moves along, a full two-dimensional radiographic image of the container may be obtained. Radiographic images may be enhanced either by providing uniform motion for the straddling frame or by measuring non-uniform motion and compensating corresponding regions of the radiographic image.</p> |
