Lin, C.-W.C.-W.LinChen, S.-C.S.-C.ChenChen, C.-W.C.-W.ChenYI-PING HUNGKUAN-WEN CHEN2020-06-112020-06-11201415516857https://scholars.lib.ntu.edu.tw/handle/123456789/500692https://www.scopus.com/inward/record.uri?eid=2-s2.0-84920991800&doi=10.1145%2f2645862&partnerID=40&md5=d69b4f46482c3758db5ed26230ca4817Large-area, high-resolution visual monitoring systems are indispensable in surveillance applications. To construct such systems, high-quality image capture and display devices are required. Whereas high-quality displays have rapidly developed, as exemplified by the announcement of the 85-inch 4K ultrahigh-definition TV by Samsung at the 2013 Consumer Electronics Show (CES), high-resolution surveillance cameras have progressed slowly and remain not widely used compared with displays. In this study, we designed an innovative framework, using a dual-camera system comprising a wide-angle fixed camera and a high-resolution pan-tilt-zoom (PTZ) camera to construct a large-area, multilayered, and high-resolution visual monitoring system that features multiresolution monitoring of moving objects. First, we developed a novel calibration approach to estimate the relationship between the two cameras and calibrate the PTZ camera. The PTZ camera was calibrated based on the consistent property of distinct pan-tilt angle at various zooming factors, accelerating the calibration process without affecting accuracy; this calibration process has not been reported previously. After calibrating the dual-camera system, we used the PTZ camera and synthesized a large-area and high-resolution background image. When foreground targets were detected in the images captured by the wide-angle camera, the PTZ camera was controlled to continuously track the user-selected target. Last, we integrated preconstructed high-resolution background and low-resolution foreground images captured using the wide-angle camera and the high-resolution foreground image captured using the PTZ camera to generate a large-area, multilayered, and high-resolution view of the scene. © 2014 ACM.Dual-camera system; Large-area, multilayered, and high-resolution system; PTZ camera; Visual monitoring; Wide-angle fixed cameraCalibration; Cameras; Display devices; High definition television; Monitoring; Space telescopes; Dual-camera systems; Fixed cameras; High-resolution systems; PTZ camera; Visual monitoring; Security systemsjournal article10.1145/26458622-s2.0-84920991800