2009 Poster Sessions : Image-based Retrieval with a Camera-Phone

Student Name : David Chen, Sam Tsai
Advisor : Bernd Girod
Research Areas: Information Systems
Abstract:
Handheld mobile devices, such as camera-phones or PDAs, are expected to become ubiquitous platforms for visual search and mobile augmented reality applications. For mobile image matching, a visual database is typically stored at a server in the network. Hence, information must be either uploaded from the mobile to the server or downloaded to the mobile. With relatively slow wireless links, the response time of the system critically depends on how much information is transferred. We present our current work on compressed-based image retrieval and a rate-efficient image matching system. A real-time CD/DVD cover recognition system has been successfully developed based on our designed system.


Bio:
David Chen is a Ph.D. student in the Information Systems Lab, part of the Department of Electrical Engineering at Stanford University. His research is with Prof. Bernd Girod in the area of mobile image search.
As a graduate student, David has worked successfully to design and develop a real-time system for CD/DVD cover recognition on a camera phone. Recent technical contributions include a compression method for tree-based image matching and a computer vision method for improved recognition under perspective distortion. David holds an M.S. degree and a B.S. degree in Electrical Engineering from Stanford. During his undergraduate years, he also worked for 3D Geo Inc., the Stanford Exploration Project, the Stanford Radioscience and Telecommunications Lab, and the Stanford Linear Accelerator Center.

Sam Shang-hsuan Tsai is a Ph.D. student in the Information Systems Lab, part of the Department of Electrical Engineering at Stanford University. His research interest is in mobile multimedia systems and is doing research with Prof. Bernd Girod. He is currently designing and developing mobile image-retrieval systems for mobile image recognition and has built real-time CD/DVD recognition systems. Sam received the B.S degree in electronics engineering and the M.S degree in electronics from National Chiao-Tung University, Taiwan. He also has worked for Realtek Semiconductor Corp. developing digital multimedia system as an engineer.