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首页> 外文期刊>Sensors Journal, IEEE >Image-Based System for Measuring Objects on an Oblique Plane and Its Applications in 2-D Localization
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Image-Based System for Measuring Objects on an Oblique Plane and Its Applications in 2-D Localization

机译：基于图像的斜面上物体测量系统及其在二维定位中的应用

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This paper presents an image-based framework for measuring target objects on an oblique plane by using a single charge-coupled device camera and two laser projectors mounted in parallel beside the camera. Because of the alignment of the laser beams, which form in parallel with the optical axis of the camera, laser-projected spots in the image can be processed to establish relationships between distance and pixel counts of the projected spots in the image. Based on simple geometrical derivations without complex image processing, the proposed approach can successfully measure the photographic distance, the distance between two arbitrary points on the oblique surface, and the incline angle of the oblique surface. Thanks to its ranging capability, the proposed image-based measuring system is further applied to localize objects on a ground surface in addition to depth measurement. To demonstrate the feasibility of the proposed approach for practical applications, we propose a surveillance framework under which a pan-tilt-zoom camera tracks objects in an environment according to the 2-D localization results obtained via the proposed method. Experimental results have demonstrated the effectiveness of the proposed approach in distance measurement, as well as localization of objects on an oblique plane.
机译：本文提出了一个基于图像的框架，该框架通过使用单个电荷耦合设备照相机和两个并行安装在照相机旁边的激光投影仪来测量斜面上的目标物体。由于平行于照相机的光轴形成的激光束的对准，可以处理图像中的激光投影点，以建立距离和图像中投影点的像素数之间的关系。基于简单的几何推导，无需复杂的图像处理，该方法可以成功地测量摄影距离，斜面上任意两个点之间的距离以及斜面的倾斜角度。凭借其测距功能，除了深度测量之外，所提出的基于图像的测量系统还进一步应用于在地面上定位对象。为了证明所提出的方法在实际应用中的可行性，我们提出了一个监视框架，在该监视框架下，根据通过所提出的方法获得的二维定位结果，云台变焦相机在环境中跟踪对象。实验结果证明了该方法在距离测量以及在倾斜平面上对物体进行定位方面的有效性。

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