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With the fast development of the Internet and computer technology in recent years, the use of visual information on the World Wide Web has become more popular. There has been a trend in retrieving images on the basis of automatically-derived features such as color and shape. Conducting the image retrieval by query image has attracted plenty of attention(More)
Image reconstruction using positron emission tomogra-phy (PET) involves estimating an unknown number of photon pairs emitted from the radiopharmaceuticals within the tissues of the patient's body. The generation of the photons can be described as a Poisson process and the difficulty of image reconstruction involves approximating the parameter of the tissue(More)
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