1. A method for feature detection in an ultrasound image by using a computer processor, the method comprising: (a) estimating speckle distribution in each of first and second windows adjacent to a pixel of said ultrasound image; (b) calculating for said pixel a first divergence value between the estimated speckle distribution in the first window and the estimated speckle distribution in the second window; and (c) generating a feature map for said ultrasound image by assigning said pixel an intensity value based on the first divergence value for said pixel.