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 less than 1.0?

Question

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

Answer 1

For a local enhancement using mean and variance, there is one condition: the local variance must be higher than the global variance. This ensures that the region has sufficient contrast or variation, making it suitable for enhancement. If the local variance is too low, the enhancement may not be effective in bringing out the details in that region.