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2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel
We propose an extension of the Filtered Back-Projection (FBP) algorithm for reconstruction of attenuation images in Computed Tomography (CT). In our scheme, the standard filtering of projections with windowed ramp kernel is replaced by an adaptive, spatially-variant linear filter, based on a structured bank of 2D convolution kernels. In addition, the proposed scheme includes a post-processing step of image filtering by convolution with a 2D adaptive filter. Both filters are trained fordoi:10.1109/eeei.2008.4736585 fatcat:hwbnpb3mrfburpsnps4ewrqjl4