Modulus maximum image energy using maximum entropy

A negative gradient of the image energy is a driving force which controls the movement of an active contour. We might say that the final shape depends most on how well the image energy is defined. Traditional image energy models produce a limited range of the force and a poor vector filed definition for concave regions. This limitations have been resolved by a gradient vector flow whose major disadvantage is computational time. However, we have proposed a novel modulus maximums image energy which is based on the wavelet transform. It is defined as a cubic spatial interpolation between adjacent modulus maxima. Its negative gradient has a large capture range and forces active contours also into a concave shape. At the end an example of active contour driven by the negative gradient of modulus maximum image energy is presented.