Learn More
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)
High dynamic range images may be created by capturing multiple images of a scene with varying exposures. Images created in this manner are prone to ghosting artifacts, which appear if there is movement in the scene at the time of capture. This paper describes a novel approach to removing ghosting artifacts from high dynamic range images, without the need(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)
BACKGROUND The gold standard for diagnosis of enteric fever caused by Salmonella Typhi or Salmonella Paratyphi A or B is bone marrow culture. However, because bone marrow aspiration is highly invasive, many hospitals and large health centers perform blood culture instead. As blood culture has several limitations, there is a need for novel typhoid(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)