A Computational Approach to Edge Detection
IEEE Transactions on Pattern Analysis and Machine Intelligence
Creating full view panoramic image mosaics and environment maps
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Immersive teleconferencing: a new algorithm to generate seamless panoramic video imagery
MULTIMEDIA '99 Proceedings of the seventh ACM international conference on Multimedia (Part 1)
Computer Vision: A Modern Approach
Computer Vision: A Modern Approach
IEEE MultiMedia
Distinctive Image Features from Scale-Invariant Keypoints
International Journal of Computer Vision
Squaring the Circles in Panoramas
ICCV '05 Proceedings of the Tenth IEEE International Conference on Computer Vision - Volume 2
Photographing long scenes with multi-viewpoint panoramas
ACM SIGGRAPH 2006 Papers
Video Mosaics for Virtual Environments
IEEE Computer Graphics and Applications
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This paper presents a technique to create wide field-of-view from common webcams. Our system consists of two stages: the initialization stage and the real-time stage. In the first stage, we detect robust features in the initial frame of each webcam and find the corresponding points between them. Then the matched point pairs are employed to compute the perspective matrix which describes the geometric relationship of the adjacent views. After the initialization stage, we register the frame sequences of different webcams on the same plane using the perspective matrix and synthesize the overlapped region using a nonlinear blending method in real time. In this way, the narrow fields of each webcam are displayed together as one wide scene. We demonstrate the effectiveness of our method on a prototype that consists of two ordinary webcams and show that this is an interesting and inexpensive way to experience the wide-angle observation.