Construction of three-dimensional structures from video sequences has wide applications for intelligent\r\nvideo analysis. This paper summarizes the key issues of the theory and surveys the recent\r\nadvances in the state of the art. Reconstruction of a scene object from video sequences often takes\r\nthe basic principle of structure from motion with an uncalibrated camera. This paper lists the\r\ntypical strategies and summarizes the typical solutions or algorithms for modeling of complex\r\nthree-dimensional structures. Open difficult problems are also suggested for further study.
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