Szukana fraza: [Abstract = "To overcome them, prior knowledge of the object of interest has to be incorporated in a top\-down procedure for segmentation. Consequently, in this work, a novel integrated algorithm is proposed combining bottom\-up \(blind\) and top\-down \(including shape prior\) techniques. First, a color space transformation is performed. Then, an energy function \(based on nonlinear diffusion of color components and directional derivatives\) is defined. Next, signeddistance functions are generated from different shapes of the object of interest"]