Enhancement of Signal-to-Noise Ratio in Magnetic Resonance Imaging Using Adaptive Template Filtering
نویسندگان
چکیده
Method There have been several adaptive approaches to improve SNR without much degradation of resolution. e.g., adaptive filter based on the local statistics with 1-D and 2D linear least square error algorithm (LLSE), 2-D adaptive recursive filter, and nonlinear anisotropic filters. Since these algorithms assume a fixed template or only a few templates according to mostly 4 directions, they have limitations in adapting to general complex edges. of(k,l) = max{ O,of(k,I)-0,:)
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