SPIP™ has the following spatial filters implemented in the Filter module, which will be described in the following.
Gaussian Standard deviation Smoothing
Highpass (Unicrisp - Laplacian)
Laplacian of the Gaussian /Mexican Hat
Gradient (Roberts, Prewitt, Sobel, Pixel Difference )
ISO 11562 Gaussian profile filter for surface analysis
ISO 13565 Deep Valley - Gaussian profile filter for surface analysis
Median filtering, for noise removal
Outlier Objects Filter for recovery of areas covered by contamination and spike elimination
Local Mean equalization
Local Standard Deviation equalization