NTU talk:

Title: Localization and Mapping of Surveillance Cameras in City Map
Speaker: Prof. Leow Wee Kheng, National University of Singapore
Time: 2:20pm, Oct 30 (Fri), 2009
Place: Room 103, CSIE building

Abstract:

Many large cities have installed surveillance cameras to monitor human activities for security purposes. An important surveillance application is to track the motion of an object of interest, e.g., a car or a human, using one or more cameras, and plot the motion path in a city map. To achieve this goal, it is necessary to localize the cameras in the city map and to determine the correspondence mappings between the positions in the city map and the camera views. Since the view of the city map is roughly orthogonal to the camera views, there are very few common features between the two views for a computer vision algorithm to correctly identify corresponding points automatically. We propose a method for camera localization and position mapping that requires minimum user inputs. Given approximate corresponding points between the city map and a camera view identified by a user, the method computes the orientation and position of the camera in the city map, and determines the mapping between the positions in the city map and the camera view. The performance of the method is assessed in both quantitative tests and practical application. Quantitative test results show that the method is accurate and robust in camera localization and position mapping. Application test results are very encouraging, showing the usefulness of the method in real applications.

Short Biography: Dr. Leow Wee Kheng obtained his B.Sc. and M.Sc. in Computer Science from National University of Singapore in 1985 and 1989 respectively. He pursued Ph.D. study at The University of Texas at Austin and obtained his Ph.D. in Computer Science in 1994. His curent research interests include computer vision, medical image analysis, and protein docking. He has published more than 80 technical papers in journals, conferences, and books. He has also been awarded two U.S. patents and has published another patent under PCT. He has served in the Program Committees and Organizing Committees of various conferences. He has collaborated widely with a large number of local and overseas institutions. His current local collaborators include I2R of A*STAR, Singapore General Hospital, National University Hospital, and National Skin Centre, and overseas collaborators include CNRS in France and National Taiwan University and National Taiwan University Hospital.