TY - JOUR T1 - A Real-time Digital Video Recorder System in Mobile Environments AU - , Kwang-Hyoung Lee AU - , Jong-Hee Lee AU - , Keun-Wang Lee JO - Asian Journal of Information Technology VL - 4 IS - 8 SP - 809 EP - 815 PY - 2005 DA - 2001/08/19 SN - 1682-3915 DO - ajit.2005.809.815 UR - https://makhillpublications.co/view-article.php?doi=ajit.2005.809.815 KW - DVR KW -real-time object tracking KW -face area extraction AB - We propose a method for extracting and tracking objects from real-time images using adaptive background imaging. Adaptive background images are generated by removing background noise from images and updating the background area, not the object area, to extract objects strong against lighting. The objects are then extracted using the difference between the background image and the input image from the camera. A minimal rectangular area is set using the internal points of the extracted object and utilized for tracing objects. The implemented system was developed to monitor objects moving in real-time through Web and mobile devices. The results of performance tests on the proposed method are compared with those of existing tracking algorithms and an assessment is given. ER -