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CIMAGING
2010
165views Hardware» more  CIMAGING 2010»
12 years 1 days ago
Implementation and evaluation of a penalized alternating minimization algorithm for computational DIC microscopy
We present the implementation and evaluation of a penalized alternating minimization (AM) method1 for the computation of a specimen's complex transmittance function (magnitud...
Chrysanthe Preza, Joseph A. O'Sullivan
CIMAGING
2010
165views Hardware» more  CIMAGING 2010»
12 years 1 days ago
Virtual surgical modification for planning tetralogy of Fallot repair
Goals for treating congenital heart defects are becoming increasingly focused on the long-term, targeting solutions that last into adulthood. Although this shift has motivated the...
Jonathan Plasencia, Haithem Babiker, Randy Richard...
CIMAGING
2009
153views Hardware» more  CIMAGING 2009»
12 years 29 days ago
Dictionaries for sparse representation and recovery of reflectances
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
CIMAGING
2009
274views Hardware» more  CIMAGING 2009»
12 years 29 days ago
Image zooming with contour stencils
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
CIMAGING
2009
120views Hardware» more  CIMAGING 2009»
12 years 29 days ago
Dantzig selector homotopy with dynamic measurements
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
CIMAGING
2009
192views Hardware» more  CIMAGING 2009»
12 years 29 days ago
Compressive coded aperture imaging
Nonlinear image reconstruction based upon sparse representations of images has recently received widespread attention with the emerging framework of compressed sensing (CS). This ...
Roummel F. Marcia, Zachary T. Harmany, Rebecca Wil...
CIMAGING
2009
145views Hardware» more  CIMAGING 2009»
12 years 29 days ago
Wavelet-based Poisson rate estimation using the Skellam distribution
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
CIMAGING
2009
141views Hardware» more  CIMAGING 2009»
12 years 29 days ago
Personal dietary assessment using mobile devices
Dietary intake provides valuable insights for mounting intervention programs for prevention of disease. With growing concern for adolescent obesity, the need to accurately measure...
Anand Mariappan, Marc Bosch, Fengqing Zhu, Carol J...
CIMAGING
2009
265views Hardware» more  CIMAGING 2009»
12 years 29 days ago
Multi-object segmentation using coupled nonparametric shape and relative pose priors
We present a new method for multi-object segmentation in a maximum a posteriori estimation framework. Our method is motivated by the observation that neighboring or coupling objec...
Mustafa Gökhan Uzunbas, Octavian Soldea, M&uu...
CIMAGING
2009
184views Hardware» more  CIMAGING 2009»
12 years 29 days ago
Fast space-varying convolution and its application in stray light reduction
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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