Fully Automatic PTZ Camera Calibration Method

Obukhov, A.; Strelnikov, K.; Vatolin, D.

Авторы: Obukhov Anton, Strelnikov Konstantin, Vatolin Dmitry
Сборник: Proceedings of the 18th International Conference on Computer Graphics and Vision GraphiCon'2008
Серия: GraphiCon
Год издания: 2008
Место издания: Moscow, Russia
Первая страница: 122
Последняя страница: 127
Аннотация: In this paper we present a novel approach to fully automatic pan- tilt-zoom (PTZ) camera calibration. A calibration s ystem based on the proposed method is easy to setup, is easily sca lable and does not require any human participation during operatio n. We focus on calibration of extrinsic parameters while assumi ng that all intrinsic parameters are known a priori . Our calibration technique uses a set of measurements that are each represente d by the correspondence between the Cartesian world coordina tes and the camera’s internal pan - tilt coordinates for a given point. Use of the proposed “direct measurement” approach makes the ca libration process separable, which means that the camera posi tion and rotation can be calculated independently. Although the internal coordinates are easily accessible in most contempor ary cameras, the world coordinates of specific points must be ob tained using a visual marker detection system. The output of the a uto-calibration system for each camera is the extrinsic camera para meters that best fit the input measurements. The proposed metho d is designed for operation in areas under various lighting condi tions or with complex wall topology and it exhibits adequate resu lts in practice.
Добавил в систему: Ватолин Дмитрий Сергеевич

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Fully Automatic PTZ Camera Calibration Methodстатья

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