Wilson Man-Chung Yeung

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Indoor positioning technology and its accuracy are crucial research topics for ubiquitous computing. While the GSM-based approach has always been used to provide outdoor positioning to compensate the lost of GPS in urban area, we seldom see systems that utilize the GSM-based approach for indoor positioning. On the other hand, the WLAN-based approach is(More)
Biometric security has been largely regarded and researched within the latest 20 years. However, researchers focus in face recognition have not paid enough attention to the security of face biometric data. We propose a cryptographic algorithm to protect face recognition process against attack, which applies the error-correcting codes. The original face(More)
This paper has proposed a new scheme to protect face biometric data against attack. After feature vectors are extracted from biometric data, a transformation scheme based on distance to " distinguish points " is proposed to transform the original feature vectors to binary strings with Hamming distance, which preserves the distribution of these feature(More)
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