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 should be sufficiently high. This indicates that the region has noticeable contrast, making it suitable for enhancement. Low variance would suggest a lack of contrast, making enhancement less effective.