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 must be below a specific threshold. This ensures that the area has relatively low contrast or uniform intensity, making it suitable for enhancement. When this condition is met, local enhancement techniques can adjust the brightness and contrast to bring out more details effectively.