title: A Novel 2D-to-3D Video Conversion Method Using Time-Coherent Depth Maps.
abstract: In this paper, we propose a novel 2D-to-3D video conversion method for 3D entertainment applications. 3D entertainment is getting more and more popular and can be found in many contexts, such as TV and home gaming equipment. 3D image sensors are a new method to produce stereoscopic video content conveniently and at a low cost, and can thus meet the urgent demand for 3D videos in the 3D entertaiment market. Generally, 2D image sensor and 2D-to-3D conversion chip can compose a 3D image sensor. Our study presents a novel 2D-to-3D video conversion algorithm which can be adopted in a 3D image sensor. In our algorithm, a depth map is generated by combining global depth gradient and local depth refinement for each frame of 2D video input. Global depth gradient is computed according to image type while local depth refinement is related to color information. As input 2D video content consists of a number of video shots, the proposed algorithm reuses the global depth gradient of frames within the same video shot to generate time-coherent depth maps. The experimental results prove that this novel method can adapt to different image types, reduce computational complexity and improve the temporal smoothness of generated 3D video.
authors.affiliation: Institute of Microelectronics, Tsinghua University, Beijing 100084, China. yinsy@tsinghua.edu.cn.
authors.forename: Shouyi
authors.initials: S
authors.lastname: Yin
authors.affiliation: Institute of Microelectronics, Tsinghua University, Beijing 100084, China. h-dong12@mails.tsinghua.edu.cn.
authors.forename: Hao
authors.initials: H
authors.lastname: Dong
authors.affiliation: Institute of Microelectronics, Tsinghua University, Beijing 100084, China. jgl12@mails.tsinghua.edu.cn.
authors.forename: Guangli
authors.initials: G
authors.lastname: Jiang
authors.affiliation: Institute of Microelectronics, Tsinghua University, Beijing 100084, China. liulb@tsinghua.edu.cn.
authors.forename: Leibo
authors.initials: L
authors.lastname: Liu
authors.affiliation: Institute of Microelectronics, Tsinghua University, Beijing 100084, China. wsj@mail.tsinghua.edu.cn.
authors.forename: Shaojun
authors.initials: S
authors.lastname: Wei
keywords: 2D-to-3D video conversion; TV and home gaming equipment; stereoscopic video; time-coherent depth maps