Alok Shankar

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We present a cloud-based approach to opportunistic, near real-time search of untagged images on smartphones that is sensitive to bandwidth and energy constraints. Our approach is inspired by the long-established practice of photographers using contact sheets to rapidly visualize a new collection of photographs, and then selecting a subset on which to focus(More)
To my wife Dana and my children Lynn and Joon Acknowledgements I would like to first thank my advisor Prof. Mahadev Satyanarayanan. I was truly fortunate to be advised by him. When I was an undergrad student in Korea, I dreamed of becoming a computer scientist reading his papers. So, it has been a great honor to work with him and to be guided by him. I have(More)
Beam shaping devices like ROI attenuators and compensation filters modulate the intensity distribution of the x-ray beam incident on the patient. This results in a spatial variation of skin dose due to the variation of primary radiation and also a variation in backscattered radiation from the patient. To determine the backscatter component, backscatter(More)
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