approaches the city centre. Keywords: Stop distance, public transport, density gradient, public transport access … densities increase as one approaches the centre. We demonstrate that there exist combinations of the various cost and density … gradient parameters that result in constant stop distances as an optimal outcome. However, this is found for rather steep …

suitable for color images and they change the shapes of object contours in large scales. In this paper, a novel density … gradient-based method is proposed to solve these problems. The proposed method locates the edges using the density gradients of …