US Patent 7656995 Imaging of materials

An apparatus and method for obtaining an image of an object. The apparatus comprises a radiation source and a series of two to five linear detectors spaced therefrom to define a scanning zone; means to cause an object to move relative to and through the scanning zone; a direct image generation apparatus to generate an image from the output of a linear detector; an intermediate image generation apparatus configured to generate at least one intermediate image from an adjacent pair of linear detectors, by processing the output of the pair of detectors and generating an image representative of an output intermediate between the two said detector outputs; the image apparatus adapted such that at least five and preferably at least six images are generated in total; an image display adapted successively to display such images and thus display the monocular movement parallax between the images.