A Self-Calibration Method of Zooming Camera
نویسندگان
چکیده
منابع مشابه
A Self-Calibration Method of Zooming Camera
In this article we proposed a novel approach to selfcalibrate a camera with variable focal length. We show that the estimation of camera’s intrinsic parameters is possible from only two points of an unknown planar scene. The projection of these points by using the projection matrices in two images only permit us to obtain a system of equations according to the camera’s intrinsic parameters . Fr...
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Abtract A linear self-calibration method is given for computing the calibration of a stationary but rotating camera. The internal parameters of the camera are allowed to vary from image to image, allowing for zooming (change of focal length) and possible variation of the principal point of the camera. In order for calibration to be possible some constraints must be placed on the calibration of ...
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We propose a method to calibrate a rotating and zooming camera without 3D pattern, where the internal parameters change frame by frame. First, we show that the calibration is unique up to an orthogonal transformation under the assumption that the skew of the camera is zero. The auto-calibration is possible by analyzing inter-image homographies computed from the matches in the images of the same...
متن کاملAbout the Self-Calibration of a Rotating and Zooming Camera: Theory and Practice
This paper deals with first the uniqueness of the selfcalibration of a rotating and zooming camera theoretically. We assume that the principal point and the aspect ratio are fixed but the focal length changes as the camera moves. In this case, at least one inter-image homography is required in order to compute the internal calibration parameters as well as the rotation. Secondly, we analyze the...
متن کاملNovel Patterns and Methods for Zooming Camera Calibration
Camera calibration is a necessary step in order to develop applications that need to establish a relationship between image pixels and real world points. The goal of camera calibration is to estimate the extrinsic and intrinsic camera parameters. Usually, for non-zooming cameras, the calibration is carried out by using a grid pattern of known dimensions (e.g., a chessboard). However, for camera...
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ژورنال
عنوان ژورنال: International Journal of Interactive Multimedia and Artificial Intelligence
سال: 2016
ISSN: 1989-1660
DOI: 10.9781/ijimai.2016.414