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 ensures that the region being enhanced has distinct features or variations, making enhancement more effective in highlighting contrasts or details in that specific area.