For a local enhancement using mean and variance, there is one condition: σs(x, y) ≤ k2DG, where, MDG is global standard deviation, k2 a positive constant and σs(x, y) a measure of contrast at point (x, y). Then, which fact is true for k2 if its values is greater than 1.0?

Question

For a local enhancement using mean and variance, there is one condition:

Answer 1

The condition for a local enhancement using mean and variance is that the local mean and local variance of the region should differ from the global mean and variance. This difference indicates that the region has unique characteristics, making it suitable for enhancement, as it allows adjustments to better highlight local details against the general image background.