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Process for the reconstruction of a 3D image with contrast and resolution improvements and application of said process to the production of an attentuation cartography of an object
Process for the reconstruction of a 3D image with contrast and resolution improvements and application of said process to the production of an attentuation cartography of an object
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机译：具有对比度和分辨率改进的3D图像重建方法，以及该方法在物体的注视制图制作中的应用
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摘要
A three-dimensional image of an object is constructed by a process using values assumed by a property of the object in an array of elementary volumes of the object. The process determines the measured projections of the property and reconstructs the three-dimensional image of the object by iteration. The iteration includes steps of carrying out a reconstruction of a first three dimensional image of the object, estimating local parameters defining an anisotropic model of the object as a function of the reconstructed three-dimensional image, deducing calculated projections of the property passing through at least one elementary volume, comparing at least one calculated projection with the measured projection in order to deduce therefrom a projection difference, determining a weighting factor, and performing an updating of each elementary volume.
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