In this pipeline the different classifications for the segmented objects are shown, followed by the blending operations. To visualize the vessels, they are first classified with a special transfer function and then blended over the background image. The segmented Tumor is also classified and then blended over the Vessels + Bones. Generally the classified segmented volumes are blended in lowest to highest priority order using B-over-A blending of the RGB data and the corresponding opacity (alpha) data.