45 search results - page 2 / 9 » Density Control for Photon Maps |
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
Metal and beam-hardening artifacts are tough issues in Computed Tomography (CT) images. This paper proposes an iterative Maximum A Posteriori (MAP) reconstruction algorithm aiming...
GMP
2006
IEEE
14 years 1 months ago
2006
IEEE
Abstract. Low-discrepancy point distributions exhibit excellent uniformity properties for sampling in applications such as rendering and measurement. We present an algorithm for ge...
IPMI
1999
Springer
14 years 8 months ago
1999
Springer
Abstract. We describe a method for computing a continuous time estimate of dynamic changes in tracer density using list mode PET data. The tracer density in each voxel is modeled a...
TMI
2002
13 years 7 months ago
2002
We describe a method for computing a continuous time estimate of tracer density using list-mode positron emission tomography data. The rate function in each voxel is modeled as an ...
LREC
2008
13 years 9 months ago
2008
Low-density languages raise difficulties for standard approaches to natural language processing that depend on large online corpora. Using Persian as a case study, we propose a no...