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Radial Distortion Self-Calibration
Brito, José Henrique; Angst, Roland; Köser, Kevin; Pollefeys, MarcIn cameras with radial distortion, straight lines in space are in general mapped to curves in the image. Although epipolar geometry also gets distorted, there is a set of special epipolar lines that remain straight, namely those that go through the distortion center. By finding these straight epipolar lines in camera pairs we can obtain constraints on the distortion center(s) without any calibration object or p...
Unknown Radial Distortion Centers in Multiple View Geometry Problems
Brito, José Henrique; Angst, Roland; Köser, Kevin; Zach, Christopher; Branco, Pedro; Ferreira, Manuel João; Pollefeys, MarcThe radial undistortion model proposed by Fitzgibbon and the radial fundamental matrix were early steps to extend classical epipolar geometry to distorted cameras. Later minimal solvers have been proposed to find relative pose and radial distortion, given point correspondences between images. However, a big drawback of all these approaches is that they require the distortion center to be exactly known. In this ...
One-sided Radial-Fundamental Matrix Estimation
Brito, José Henrique; Zach, Christopher; Köser, Kevin; Ferreira, Manuel; Pollefeys, MarcFor modern consumer cameras often approximate calibration data is available, making applications such as 3D reconstruction or photo registration easier as compared to the pure uncalibrated setting. In this paper we address the setting with calibrateduncalibrated image pairs: for one image intrinsic parameters are assumed to be known, whereas the second view has unknown distortion and calibration parameters. Thi...
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