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    CIMAGING
    2009
    274views Hardware» more  CIMAGING 2009»
    Image zooming with contour stencils
    13 years 6 months ago
    Image zooming with contour stencils
    Download  www.math.ucla.edu
    We introduce "contour stencils" as a simple method for detecting the local orientation of image contours and apply this detection to image zooming. Our approach is motiv...
    Pascal Getreuer
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    CIMAGING
    2009
    153views Hardware» more  CIMAGING 2009»
    Dictionaries for sparse representation and recovery of reflectances
    13 years 6 months ago
    Dictionaries for sparse representation and recovery of reflectances
    Download  white.stanford.edu
    The surface reflectance function of many common materials varies slowly over the visible wavelength range. For this reason, linear models with a small number of bases (5-8) are fr...
    Steven Lansel, Manu Parmar, Brian A. Wandell
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    CIMAGING
    2009
    145views Hardware» more  CIMAGING 2009»
    Wavelet-based Poisson rate estimation using the Skellam distribution
    13 years 6 months ago
    Wavelet-based Poisson rate estimation using the Skellam distribution
    Download  sisl.seas.harvard.edu
    Owing to the stochastic nature of discrete processes such as photon counts in imaging, real-world data measurements often exhibit heteroscedastic behavior. In particular, time ser...
    Keigo Hirakawa, Farhan A. Baqai, Patrick J. Wolfe
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    CIMAGING
    2009
    120views Hardware» more  CIMAGING 2009»
    Dantzig selector homotopy with dynamic measurements
    13 years 6 months ago
    Dantzig selector homotopy with dynamic measurements
    Download  users.ece.gatech.edu
    The Dantzig selector is a near ideal estimator for recovery of sparse signals from linear measurements in the presence of noise. It is a convex optimization problem which can be r...
    Muhammad Salman Asif, Justin K. Romberg
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    CIMAGING
    2009
    184views Hardware» more  CIMAGING 2009»
    Fast space-varying convolution and its application in stray light reduction
    13 years 6 months ago
    Fast space-varying convolution and its application in stray light reduction
    Download  engineering.purdue.edu
    Space-varying convolution often arises in the modeling or restoration of images captured by optical imaging systems. For example, in applications such as microscopy or photography...
    Jianing Wei, Guangzhi Cao, Charles A. Bouman, Jan ...
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