Regular Paper

[OPTICAL REVIEW Vol. 21, No. 5 (2014) 509-515]
© 2014 The Japan Society of Applied Physics

High-Speed Video Capture by a Single Flutter Shutter Camera Using Three-Dimensional Hyperbolic Wavelets

Kuihua HUANG*, Jun ZHANG, and Jinxin HOU

College of Information System and Management, National University of Defense Technology, Changsha, Hunan 410073, P. R. China

(Received March 4, 2014; Accepted June 19, 2014)

Based on the consideration of easy achievement in modern sensors, this paper further exploits the possibility of the recovery of high-speed video (HSV) by a single flutter shutter camera. Taking into account different degrees of smoothness along the spatial and temporal dimensions of HSV, this paper proposes to use a three-dimensional hyperbolic wavelet basis based on Kronecker product to jointly model the spatial and temporal redundancy of HSV. Besides, we incorporate the total variation of temporal correlations in HSV as a prior knowledge to further enhance our reconstruction quality. We recover the underlying HSV frames from the observed low-speed coded video by solving a convex minimization problem. The experimental results on simulated and real-world videos both demonstrate the validity of the proposed method.

Key words: high-speed video, flutter shutter camera, 3D hyperbolic wavelets, Kronecker product, total variation

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