JSTOR Daily

Does Median Filtering Truly Preserve Edges Better than Linear Filtering?

Image processing researchers commonly assert that "median filtering is better than linear filtering for removing noise in the presence of edges." Using a straightforward large-n decision-theory ...
Embedded

Using nonlinear Kalman filtering to estimate signals

It appears that no particular approximate [nonlinear] filter is consistently better than any other, though . . . any nonlinear filter is better than a strictly linear one. 1 The Kalman filter is a ...
Optics

Ultra-Narrow Linear Variable VIS Bandpass Filter

Delta Optical Thin Film has lifted the application range of variable filters to new levels by introducing a new powerful type of linear variable filter (LVF). Since Delta Optical Thin Film offered the ...
EDN

Median filters – An efficient way to remove impulse noise

The combination of brushed DC motors and small-signal sensors, whether on a robot platform or some other electrical machine system, can be a challenging proposition. The several-orders-of-magnitude ...
Optics

Ultra-Narrow Linear Variable VIS Bandpass Filter

Delta Optical Thin Film has lifted the application range of variable filters to new levels by introducing a new powerful type of linear variable filter (LVF) Since Delta Optical Thin Film A/S offered ...