Binary images 4 Boolean functions 4 Classification accuracy 4 Computer vision 4 Filtered images 4 Image quality 4 Input image 4 Noiseless images 4 Noisy versions 4 Non-linear filters 4 Nonlinear filter Nonlinear filtering 4 Quality indices 4 SAR Images 4 SAR image filtering 4 Stack filters 4 Synthetic aperture radar 4 Synthetic aperture radar images 4 speckle noise 4 stack filters 4