| 摘要 |
Tomographic images of an object or scene (A-F) are produced by an analysis of two or more stereographic images of the scene including shifting one image laterally with respect to another and logically summing the image data sets. Several image processing, edge enhancement and edge extraction algorithms may be applied to the images in digitised video data form to provide wire-frame or skeleton type representations of each of the original images. Tomographic images of planes not parallel with the image plane (or normal to the camera axes) may be produced by changing the magnification of one image prior to logical summing (Fig 4). The images may be generated by three video cameras arranged on two orthogonal axes (Fig 6) for elimination of spurious coincidences. The images are preferably produced using X-rays. <IMAGE> |
