Sciweavers

1786 search results - page 192 / 358
» Superresolution images reconstructed from aliased images
Sort
View
ICIP
2005
IEEE
14 years 2 months ago
Towards arbitrary camera movements for image cube trajectory analysis
Image Cube Trajectory (ICT) Analysis is a new and robust method to estimate the 3D structure of a scene from a set of 2D images. For a moving camera each 3D point is represented b...
Ingo Feldmann, Peter Eisert, Peter Kauff
VRCAI
2006
ACM
14 years 3 months ago
Parallel-split shadow maps for large-scale virtual environments
Shadowing effects dramatically enhance the realism of virtual environments by providing useful visual cues. Shadow mapping is an efficient algorithm for real-time shadow renderin...
Fan Zhang, Hanqiu Sun, Leilei Xu, Lee Kit Lun
TMI
1998
137views more  TMI 1998»
13 years 9 months ago
Dynamic Imaging and Tracer Kinetic Modeling for Emission Tomography Using Rotating Detectors
— When performing dynamic studies using emission tomography the tracer distribution changes during acquisition of a single set of projections. This is particularly true for some ...
Chi-Hoi Lau, David Dagan Feng, Brian F. Hutton, Da...
ISBI
2004
IEEE
14 years 10 months ago
A Hierarchical Algorithm for Fast Backprojection in Helical Cone-Beam Tomography
Existing algorithms for exact helical cone beam (HCB) tomographic reconstruction involve a 3-D backprojection step, which dominates the the computational cost of the algorithm. We...
Jeffrey Brokish, Yoram Bresler
ICIP
2004
IEEE
14 years 11 months ago
Rotation and cropping resilient data hiding with zernike moments
Most digital data hiding schemes are sensitive to simple geometric attacks namely rotation, cropping, and scaling. Of these, rotational attacks possess the capability to not only ...
Palak K. Amin, Koduvayur P. Subbalakshmi