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Instead of simple point or area lights for illuminating human face in most rendering methods, we aim to render the appearance of human face influenced by surrounding environment lighting in some real scenes. In this paper, we accurately approximate the specular reflection by using the Kelemen/Szirmay-Kalos reflectance model and ten varying specular parameters over the whole face. Also, subsurface...
Using the framework of quotient image model, this paper presented a median filtering-based method (MFQI) for the illumination normalization of facial images. The proposed method first uses adaptive median filtering to derive an estimation of the received light, and then uses the quotient image model for local illumination normalization. Compared with the other quotient image methods, MFQI does not...
Biometric cryptography is a technique using biometric features to encrypt data, which can improve the security of the encrypted data and overcome the shortcomings of the traditional cryptography. This paper proposes a novel biometric cryptosystem based on palmprint features. In this system, the palmprint features, called DoG code, are extracted using Gaussian derivative filters. Then the Reed-Solomon...
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