Self-Calibration of Rotating and Zooming Cameras
International Journal of Computer Vision
The Effects of Translational Misalignment when Self-Calibrating Rotating and Zooming Cameras
IEEE Transactions on Pattern Analysis and Machine Intelligence
Reactive Control of Zoom while Fixating Using Perspective and Affine Cameras
IEEE Transactions on Pattern Analysis and Machine Intelligence
Automated Alignment of Robotic Pan-Tilt Camera Units Using Vision
International Journal of Computer Vision
Pan-tilt-zoom camera calibration and high-resolution mosaic generation
Computer Vision and Image Understanding - Special issue on omnidirectional vision and camera networks
A High-rate, Heterogeneous Data Set From The DARPA Urban Challenge
International Journal of Robotics Research
MIAR'10 Proceedings of the 5th international conference on Medical imaging and augmented reality
Self-calibration of wireless cameras with restricted degrees of freedom
Computer Vision and Image Understanding
Intrinsic and extrinsic active self-calibration of multi-camera systems
Machine Vision and Applications
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In this paper we show that radial distortion of images invalidates the geometric constraint on which self-calibration of a rotating camera is based - that 3D lines drawn between matched features all intersect at the rotation center. We develop a geometric picture showing how radial distortion violates this constraint and discuss the implications for self-calibration of a rotating camera. In particular, we show that the behavior of self-calibration is markedly different for pincushion and barreling distortion, the latter causing self-calibration to be unreliable or to fail completely. A method is presented for automatically estimating the radial distortion over a sequence of images, when both distortion and camera internal parameters vary. We discuss when such an approach will work and whether accurate automatic calibration of a rotating camera is possible.