The virtual viewpoint is perceived as a new technique in virtual navigation, as yet not supported due to the lack of depth information and obscure camera parameters. In this paper, a method for achieving close-up virtual view is proposed and it only uses optical flow to build parallax effects to realize pseudo 3D projection without using depth sensor. We develop a bidirectional optical flow method to obtain any virtual viewpoint by proportional interpolation of optical flow. Moreover, with the ingenious application of the optical-flow-value, we achieve clear and visual-fidelity magnified results through lens stretching in any corner, which overcomes the visual distortion and image blur through viewpoint magnification and transition in Google Street View system.
@article{arxiv.2307.05913,
title = {Close-up View synthesis by Interpolating Optical Flow},
author = {Xinyi Bai and Ze Wang and Lu Yang and Hong Cheng},
journal= {arXiv preprint arXiv:2307.05913},
year = {2023}
}