An Algorithm of Hierarchical Reconstruction Based on SVD
Dong Sheng Liang · 2001
Affine projection is used to approximate perspective projection, projective depths are iteratively estimated by using the conjugate gradient method, and the projective reconstruction is obtained by SVD of the measurement matrix. Under the circumstances in which the intrinsic parameters of camera are known, a 4x4 non singular matrix satisfying the conditions of euclidean reconstruction is evaluated, with which projective reconstruction is transformed into euclidean reconstruction. The result indicates that the algorithm is effective.