We developed a ray-space coding scheme in which an image-based rendering technique is introduced at the beginning of coding. Our coder first synthesizes an image at an arbitrarily given viewpoint, which is called a representative viewpoint, and then predicts input images by using the synthesized image as a reference. It can produce a scalable bitstream, which enables high-quality rendering around the representative viewpoint even at extremely low bit rates. Our experimental results show that this coding scheme has good coding efficiency for both multi-camera images and integral photography.
