Iterative smoothed residuals: a low-pass filter for smoothing with controlled shrinkage
Mark D. Wheeler, Katsushi Ikeuchi · IEEE Transactions on Pattern Analysis and Machine Intelligence · 1996
We present a linear smoothing operator which has low-pass characteristics similar to a Butterworth filter and limited spatial extent similar to a Gaussian. The smoothing operator also has closed forms in the spatial and frequency domains which facilitate analysis and implementation. A formula is derived that allows us to explicitly control shrinkage.