How to measure smoothness of a signal

1. How do you measure smoothness?
2. How do you evaluate the smoothness of a curve?
3. What is signal smoothing?
4. How do you smooth a digital signal?

How do you measure smoothness?

In laboratory tests, smoothness is traditionally measured by air-leakage methods, such as Parker PrintSurf, Sheffield, Bekk, or Bendtsen tests. Surface profilometry based on either a diamond tip or laser beam has also long been used in the laboratory.

How do you evaluate the smoothness of a curve?

Hence, the correct measure to compare smoothness in these cases is the radius of the followed curves. The curved paths' objective can be directly described as maximizing the radius, where a greater radius implies a greater smoothness.

What is signal smoothing?

In smoothing, the data points of a signal are modified so individual points higher than the adjacent points (presumably because of noise) are reduced, and points that are lower than the adjacent points are increased leading to a smoother signal.

How do you smooth a digital signal?

The easiest way to smooth a signal is by moving window average. A more advanced way is to use a Savitzky-Golay filter.