Advanced tomographic reconstruction

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Tomography allow users to obtain three-dimensional (3D) pictures of the internal structure of a material, possibly while it is being deformed under a stress or temperature. Tomographic imaging works by taking multiple two-dimensional (2D) x-ray transmission images of an object; each image directly analogous to a conventional medical x-ray but in this case with a much higher spatial resolution. The object is rotated a small amount (less than a degree) with an image collected at each position. A computational algorithm is then used to produce a 3D model of the structure by combining all the 2D images. This proposal is to obtain the software and hardware capable of a new approach for this step, going from multiple 2D images to the 3D object. This new approach will be particularly suited to dealing with situations with noisy images, or where a full 360 degree rotation of the object is not possible.