Machine vision
Efficient segmentation and camera motion indexing of compressed video
Real-Time Imaging
Video Demystified: A Handbook for the Digital Engineer
Video Demystified: A Handbook for the Digital Engineer
JACOB: just a content-based query system for video databases
ICASSP '96 Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 02
Object tracking using background subtraction and motion estimation in MPEG videos
ACCV'06 Proceedings of the 7th Asian conference on Computer Vision - Volume Part II
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In this paper, we propose a simple and efficient method to estimate the camera operations using MVs(Motion Vectors), which is extracted directly from MPEG-2 video stream without complete decoding. In the method, MVs in the compressed video stream are converted into approximated OF(Optical Flow). And the approximated OF is used to estimate the camera operations including pan, tilt and zoom based on the generalized Hough transform technique. The method provided better results than the conventional least square method for video streams of basketball and soccer games including captions. And these camera operations can be used in constructing a key frame as a mosaics image or making features for content-based video retrievals.