The Filter tool
offers the following image filters:
▪Gaussian Smooth 3D spatial filter with a full-width at half maximum (FWHM) in mm;
▪Median Smooth 3D spatial filter with a width in mm;
▪Non-local Means 3D non-local means image denoising filter with Low, Medium and Strong settings;
▪Canny Deriche Edge 2D edge enhancing spatial filter;
▪Median Frames 1D smoothing filter in the time domain for dynamic images.
▪Gaussian Frames 1D smoothing filter in time domain for dynamic images.
▪Despike MAD9 Frames 1D despiking filter in the time domain based on 9-points neighborhood. If value differs from the median more than MAD (Median Absolute Deviation) it is replaced by the median
▪HYPR-LR Smooth 4D complex denoising method for the dynamic PET series.
▪Gaussian Smooth 4D Gaussian smoothing with kernel in spatial and temporal dimension.