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Photo response nonuniformity noise is a component of sensor pattern noise (SPN) of digital cameras. It characterizes the imaging devices of cameras and has been widely used in source camera identification (SCI). However, the reference SPN always be contaminated by unwanted nonunique artifacts. Previous works reported that these nonunique artifacts were periodic signals shared among cameras, which...
We present a vision based method to estimate the respiration rate of subjects from their chest movements. In contrast to alternative approaches, our method is fully automated, non-invasive, robust to occlusions, and only depends on off-the-shelf hardware. We project a fixed infrared (IR) dot pattern. The dots are detected using a camera with a matching IR filter. We estimate the dots' barycenters...
The problem of face verification across the short wave infrared spectrum (SWIR) is studied in order to illustrate the advantages and limitations of SWIR face verification. The contributions of this work are two-fold. First, a database of 50 subjects is assembled and used to illustrate the challenges associated with the problem. Second, a set of experiments is performed in order to demonstrate the...
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