Title :
A novel method for 2D-to-3D video conversion using bi-directional motion estimation
Author :
Li, Zhenyao ; Cao, Xun ; Dai, Qionghai
Author_Institution :
Dept. of Autom., Tsinghua Univ., Beijing, China
Abstract :
In this paper, we proposed a novel semi-automatic 2D-to-3D video conversion method. Our method requires just a few user-scribbles to generate depth maps for key frames and propagates these depth maps to non-key frames automatically. For key frames, foreground objects and the corresponding depth maps can be obtained by an interactive method. Then, both forward and backward motion vectors are estimated and compared to decide the depth propagation strategy. For pixels that failed the motion vectors comparison, a compensation process is adopted to refine their depth propagation results. Finally, stereoscopic pairs are generated by the warping method based on the original frames and associated depth maps. Our method is validated by both subjective and objective quality assessments. The experimental results show that our method outperforms several state-of-the-art 2D-to-3D video conversion methods.
Keywords :
motion estimation; stereo image processing; video signal processing; backward motion vectors; bidirectional motion estimation; depth maps; foreground objects; forward motion vectors; nonkey frame depth propagation; objective quality assessment; semiautomatic 2D-to-3D video conversion; stereoscopic pairs; subjective quality assessment; user scribbles; warping method; Bidirectional control; Clustering algorithms; Color; Estimation; Motion estimation; Tracking; Vectors; 2D-to-3D conversion; Stereo vision; depth propagation; motion estimation;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2012 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4673-0045-2
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2012.6288159