LIGHT FIELD STITCHING BASED ON CONCENTRIC SPHERICAL MODELING

VR image in form of the spherical panoramic image is already widely available while enhancing its immersive experience with six degrees of freedom (6-DoF) is fundamentally required. Spherical panoramic light field (LF) becomes a potential solution because of recording the spatial and angular information of the light rays in the 360°spherical space. In this paper, a novel method is proposed to generate spherical panoramic LF by stitching LFs captured at different rotational angles. First, concentric spherical modeling is proposed to parameterize the recorded rays to eliminate the projection biases in registration. Then, the concentric spherical model-based LF registration which is insensitive to the ordering is introduced to transform each 4D LFs mesh accurately. Finally, the stitching result is projected to Two-parallel-plane (TPP) coordinates for viewing. Experimental results show that the proposed method outperforms the existing methods in terms of subjective quality and continuity in the stitched LF.