Space-Time Image Analysis

This research is about generating and analyzing space-time images by fixing the image sequence (video) to a time base direction.


Space-Time Image Analysis in a spherical-surface coordinate system


For example, when generating omni-directional images from multiple regular images, calibration of the cameras can be archived by analyzing a space-time image (see "large scale scene modeling").

We propose a method of producing Omni images from standard images by using space-time image analysis for efficient acquisition of texture data which can be used to create virtual space.
Omni images are generated by integrating images taken from multiple video cameras arramged on top of a moving car We achieve a single optical center for our Omni image, together with efficient camera calibration, by using space-time image analysis. Additionally, we are able to correct the vibration of Omni images by using spatio-temporal image analysis.


Publications
  • Mikami Takeshi, Thanda Oo, Ono Shintaro, Kawasaki Hiroshi, Ohsawa Yutaka, Ikeuchi Katushi
    "Distortion-Free Fusion of Multiple Video Camera Images Using EPI Analysis"
    Electronics and Communication in Japan, Part 2, Vol.90, No.11, pp.85-98, 10.2007
  • Shintaro Ono, Mikami Takeshi, Kawasaki Hisorhi, Ikeuchi Katsushi
    "Space-time Analysis of Spherical Projection Image"
    Proceedings of International Conference on Pattern Recognition, IAPR 18th, Vol.1, pp.975-979, 8.2006
  • Kawasaki Hiroshi, Ikeuchi Katsushi, Sakauchi Masao
    "Spatio-Temporal Analysis of Omni Image"
    Proceedings of IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR), Vol.2, pp.577-584, 6.2000
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    Kawasaki Laboratory