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Photo editing software allows digital images to be blurred, warped or re-colored. However, it is not currently possible to change the material appearance of an object except by painstakingly painting over the appropriate pixels. We present a set of methods for automatically replacing one material with another material, starting with only a single high(More)
BACKGROUND Demographic features of dengue fever have changed tremendously in Pakistan over the past two decades. Small scale studies from all over the country have reported different aspects of individual outbreaks during this time. However, there is scarcity of data looking at the overall trend of dengue virus infection in the country. In this study, we(More)
Emergence and spread of drug resistant Neisseria gonorrhoeae is global concern. We evaluated trends of antimicrobial resistance in Neisseria gonorrhoeae over years 1992-2009 in Pakistan. Resistance rates were compared between years (2007-2009) and (1992-2006). Antimicrobial susceptibility testing was performed and interpreted according to Clinical(More)
Knowing which edges in an image denote shadow edges and which are due to object boundaries or changes in surface reflectance has important applications in both computer vision and mixed reality. We show that the choice of color space has a significant effect on our ability to differentiate shadow edges from reflectance edges, particularly in sunlit scenes.(More)
Even though dengue has been recognized as one of the major public health threats in Pakistan, the understanding of its molecular epidemiology is still limited. The genotypic diversity of Dengue virus (DENV) serotypes involved in dengue outbreaks since 2005 in Pakistan is not well studied. Here, we investigated the origin, diversity, genetic relationships(More)
Tigecycline resistance has been attributed to ramA overexpression and subsequent acrA upregulation. The ramA locus, originally identified in Klebsiella pneumoniae, has homologues in Enterobacter and Salmonella spp. In this study, we identify in silico that the ramR binding site is also present in Citrobacter spp. and that Enterobacter, Citrobacter and(More)
BACKGROUND Increasing resistance to quinolones and ceftriaxone in non typhoidal Salmonellae is a global concern. Resistance to quinolone and 3rd generation cephalosporin amongst non typhoidal Salmonellae (NTS) from Pakistan has been reported in this study. METHODS Retrospective analysis of laboratory data was conducted (1990-2006). NTS were isolated and(More)