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 variance should be significantly different from the global variance. This allows the enhancement to target areas with unique texture or contrast, improving visibility of details in regions that deviate from the overall image characteristics.