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- W1972076128 abstract "Camera self-calibration is one key problem in 3D reconstruction from image sequences. In this paper, a further discussion is given for self-calibration method of Absolute Dual Quadric (ADQ). This method using projective matrix as known data to extract camera intrinsic parameters, however, projective matrix still contains some uncertain variables, and optimization to them were ignored, in addition, the utilities of constraint conditions are not convincible in nonlinear algorithm of this method. An improved algorithm is given to resolve these problems in this paper. The main idea of the improved algorithm is to recalculate projective matrix with middle calibration result in each iterative process of the algorithm, and set convergence of iterative process to the point on parabolas where the ratio of initial focal length to its result reach to 1.0. Experiment result from real image data shows that improved algorithm is efficient." @default.
- W1972076128 created "2016-06-24" @default.
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- W1972076128 date "2007-11-15" @default.
- W1972076128 modified "2023-09-23" @default.
- W1972076128 title "Improved self-calibration algorithm of absolute dual quadric" @default.
- W1972076128 doi "https://doi.org/10.1117/12.747735" @default.
- W1972076128 hasPublicationYear "2007" @default.
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