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Title: Error characteristics of SFM with unknown focal length
Authors: XIANG XU
Keywords: SFM, Camera Calibration, Error analysis, Cinema Viewing, Inherent ambiguity, Depth distortion
Issue Date: 6-Dec-2007
Citation: XIANG XU (2007-12-06). Error characteristics of SFM with unknown focal length. ScholarBank@NUS Repository.
Abstract: In this thesis we present a theoretical analysis of the behavior of SFM algorithms with respect to the errors in intrinsic parameters of the camera. In particular, we are concerned with the limitation of SFM algorithms in the face of errors in the estimation of the focal length. This is important for camera systems with zoom capability and online calibration cannot be always done with the requisite accuracy. The results show that the effect of erroneous focal length on the motion estimation is not the same over different translation and rotation directions. The structure of the scene (depth) affects the shifting of the motion estimate as well. Simulation with synthetic data and real images was conducted to support our prediction.
Appears in Collections:Ph.D Theses (Open)

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