Camera Calibration without Feature Extraction
نویسندگان
چکیده
منابع مشابه
Camera Calibration without Feature Extraction
This paper presents an original approach to the problem of camera calibration using a calibration pattern. It consists of directly searching for the camera parameters that best project three-dimensional points of a calibration pattern onto intensity edges in an image of this pattern, without explicitly extracting the edges. Based on a characterization of image edges as maxima of the intensity g...
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This paper presents an adaptive and robust algorithm for automatic corner detection. Ordinary camera calibration methods require that a set of feature points – usually, corner points of a chessboard type of pattern – be presented to the camera in a controlled manner. On the other hand, the proposed approach automatically locates the feature points even in the presence of cluttered background, c...
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This work presents a new approach to the problem of calibrating a zooming camera using staged global optimization. The input is a sequence of images of a known calibration target obtained at diier-ent mechanical zoom settings. We avoid heavy dependence on individual, strongly localized features. Feature localization is obtained iteratively, formulated as part of the error criterion used in vari...
متن کاملIntegrating Tsai’s Camera Calibration Algorithm with KLT Feature Tracking
We describe a robust and accurate algorithm to track selected features of a 3D scene in a video recording. The algorithm uses a synergistic combination of Roger Tsai’s camera calibration (TCC) algorithm and the Kanade-LucasTomasi (KLT) feature finder. Instead of trying to detect and reject outliers, we modified Tsai’s algorithm to use confidence weights which depend on the quality of the match ...
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Camera calibration is a process to find camera parameters. Camera parameter consists of intrinsic and extrinsic configuration and it is important to deal with the three-dimensional (3-D) geometry of the cameras and 3-D scene. However, camera calibration is quite annoying process when the number of cameras and images increase because it is operated by hand to indicate exact points. In order to e...
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ژورنال
عنوان ژورنال: Computer Vision and Image Understanding
سال: 1996
ISSN: 1077-3142
DOI: 10.1006/cviu.1996.0021