Abstract: A method and apparatus seamlessly blends multiple images. The multiple images are generated by independent processors, each processor producing a portion of the field of view from a defined viewpoint. Object polygons are introduced along the edges of each image that adjoin another of the images. Each of the polygons is assigned an opacity gradient which modulates the transparency of the polygon from fully transparent nearest the image center to fully opaque nearest the image edge. The images are projected with the polygons overlapping so that the images blend seamlessly together. A calibration apparatus is provided to minimize visual artifacts where the images overlap. Test patterns are projected and viewed with a video camera. The camera output is digitized and analyzed to adjust the polygon widths and opacity gradients until the overlap cannot be visually observed.