1. A computer-implemented method comprising: at an input receiving at least one estimated organ center obtained from a medical image, each estimated organ center having an associated organ classification label; using a user interface to display an organ name for each estimated organ center; at the user interface, receiving user input specifying at least one of the organ names; arranging a visualization engine to select a transfer function according to the specified organ name; arranging the visualization engine to select a camera location according to the estimated organ center of the specified organ name; using a rendering engine to render a two-dimensional image from the medical image using the selected camera location and transfer function; and using the user interface to display the two-dimensional image such that a foreground region associated with the specified organ name is visualized.