Hyperlapse Generation Method for Omnidirectional Street Videos Using Adaptive Sampling

Masanori OGAWA  Toshihiko YAMASAKI  Kiyoharu AIZAWA  

D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)   Vol.J101-D   No.7   pp.1052-1060
Publication Date: 2018/07/01
Online ISSN: 1881-0225
Type of Manuscript: PAPER
omnidirectional video,  hyperlapse,  timelapse,  stabilization,  

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Capturing a city with an omnidirectional hand-held camera provides the view of the moving person. However, watching such a video is not necessarily pleasant because the videos are often excessively lengthy. Regular subsampling displays a significant amount of destabilization resulting from shaking. This prompted us to propose an adaptive subsampling scheme that selects optimal frames by minimizing our cost function based on 3D camera positions. This optimal selection suppresses only the translational camera instabilities. The rotational instabilities are initially ignored and later compensated for. This approach allowed us to successfully generate a subsampled and stable omnidirectional video.