Nguyen Phuong Nam

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OBJECTIVE To compare estimated prevalence of head injuries among road traffic injury patients admitted to hospitals, before and after the introduction of a mandatory helmet law in the Socialist Republic of Viet Nam. METHODS Before and after study of all road traffic injury patients with head injuries admitted to 20 provincial and central hospitals 3(More)
In this paper, we introduce two schemes for color images (including gray scale fingerprint images) watermarking, which can embed facial information of a user into his/her passport or ID card image. Our first scheme is an improvement of Hsu's method to embed information in gray scale and color images. The other scheme applies CPT algorithm to matrixes(More)
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