Group Member

Wende Zhang
PhD. Student

Personal Homepage: http://amp.ece.cmu.edu/people/Wende/
Email: wende_zhang@hotmail.com

Office: Porter Hall B32
Lab: Porter Hall B6
Phone: 412-268-7100
Fax: 412-268-3890

Mailing Address:
Department of ECE, Carnegie Mellon University,
5000 Forbes Avenue, Pittsburgh,
PA 15213-3890

[Research Interests] [Project] [Publications]

Research Interests

Research Focus:

Algorithms for Dynamic Traffic-aware Route Planning

We introduce a "Boids" concept to model the intelligent vehicles. Each intelligent vehicle follows simple rules/operations and communicates locally with the neighbor vehicles for traffic-aware route planning.

Algorithms and Security Analysis for Key Generation based on Biometrics

Design the key generation algorithms based on biometrics. The focus of the research is: stability and security of the key for the target user.

Algorithms for Personal Authentication

Design the classification algorithms for personal authentication.

Sensor Fusion

Fuse multi-biometric features of the same person from different biometric sensors for personal authentication.

Multi-Biometric Data Collection System Integration

Build the system for capturing multi-biometric data, like face, fingerprint, iris and voiceprint, etc.

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Projects

		Information Sharing for Dynamic Route Planning In this project, we assume that some vehicles can share information among them locally, while the others can not. Based on the shared information, each vehicle will analyze the local traffic condition in real time, and build up the dynamic map, which contains real-time traffic information for route planning by the simple operations to minimize the traveling time. Please refer to the Information sharing for dynamic route planning project page for more details.
		Algorithms and Security Analysis for Key Generation based on Biometrics We build a key generation system based on biometrics. The system first extract the biometric features from the biometric data. Then the features are compared with thresholds to the generate bio-key. We also analyze the security problem of user information associated key generation (UIAKG) systems. We consider three kinds of attacks from the hacker: the exhaustive search attack, the authentic key statistics attack and the device key statistics attack. Please refer to the Key generation based on biometrics project page for more details.
		Algorithms for Personal Authentication We introduce a new classification algorithm based on the concept of Symmetric Maximized Minimal distance in Subspace (SMMS). SMMS tries to identify a subspace in which all the authentic samples are clustered together and all the imposter samples are far away from the authentic samples. The optimality of the subspace is determined by maximizing the minimal distance between the authentic samples and the imposter samples in the subspace. Using face authentication as an example, we show that the proposed algorithm outperforms the linear classifier based on support-vector machines (SVM). For more details on the project please see the Personal authentication based on SMMS project page.
		Sensor Fusion The Distinguish Component Analysis+ weighting method is proposed to improve the performance of face verification. The same method is also proposed to perform sensor fusion. This algorithm will outperform the single decision. For more details on the project please see the Sensor fusion project page.
		Multi-biometric Data Acquisition Station (MBDAS) In order to evaluate the proposed biometric authentication / identification algorithms, acquire multiple biometrics from an individual at the same time and test what biometric sensors and sensor resolutions/sizes are reasonable candidates, the MBDAS system is built. For more details on the project please see the Sensor fusion project page.

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Publications

Conference Papers:

W. Zhang and T. Chen, "Generalized optimal thresholding for biometric key generation using face images," IEEE International Conference on Image Processing 2005, Genova, Italy, Sep 2005.
W. Zhang, Y. Chang and T. Chen, "Optimal thresholding for key generation based on biometrics," IEEE International Conference on Image Processing 2004, Suntec City , Singapore , Oct., 2004.
W. Zhang, C. Zhang and T. Chen, "Security analysis for key generation systems using face images," IEEE International Conference on Image Processing 2004, Suntec City , Singapore , Oct., 2004.
Y. Chang, W. Zhang and T. Chen, "Biometric-based cryptographic key generation," IEEE Conference on Multimedia and Expo 2004, Taipei , Taiwan , June 2004.
W. Zhang and T. Chen, "Personal authentication based on generalized symmetric max minimal distance in subspace," IEEE Conference on Multimedia and Expo, Baltimore , MD , July 2003.
W. Zhang and T. Chen, "Classification based on symmetric max minimal distance in subspace (SMMS)," IEEE International Conference on Computer Vision and Pattern Recognition 2003, Madison, Wisconsin, June 2003.
T. Chen, Y.J. Hsu, X. Liu, and W. Zhang , "Principle component analysis and its variants for biometrics," IEEE International Conference on Image Processing 2002, Rochester , NY , USA , Sep. 2002.

Research Report:

W. Zhang and M. Wolski, “Pedestrian detection system comparison,” General Motors Research Report ECI-239, Oct, 2005.
W. Zhang and M. Wolski, “Pedestrian detection – algorithm descriptions,” General Motors Research Report ECI-238, Oct, 2005.
W. Zhang and M. Wolski, “Radial distortion correction for wide-angle cameras,” General Motors Research Report ECI-196, Dec, 2004.
W. Zhang and M. Wolski, “A survey of vision-based pedestrian detection methods,” General Motors Research Report ECI-200, Nov, 2004.

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