Title :
Acquiring 3D models of non-rigid moving objects from time and viewpoint varying image sequences: a step toward left ventricle recovery
Author :
Sato, Yoshinobu ; Moriyama, Masamitsu ; Hanayama, Masayuki ; Naito, Hiroaki ; Tamura, Shinich
Author_Institution :
Div. of Functional Diagnostic Imaging, Osaka Univ., Japan
fDate :
3/1/1997 12:00:00 AM
Abstract :
This paper describes a method for the accurate recovery of time-varying 3D shapes with known cycle from images with different viewpoints as well as times; aiming at the recovery of the left ventricular shapes. Our recovery method is based on the integration of apparent contours from different viewpoints. We perform direct fitting to a 4D closed surface model based on B-splines so as to deal with fragmented contours such as extracted from X-ray cineangiocardiograms. The method is quantitatively evaluated using synthesized and real image sequences
Keywords :
angiocardiography; cardiology; diagnostic radiography; image sequences; medical image processing; motion estimation; splines (mathematics); stereo image processing; 3D model acquisition; 3D shapes; 4D closed surface model; B-splines; X-ray cineangiocardiograms; direct fitting; fragmented contours; left ventricle recovery; nonrigid moving objects; time-varying image sequences; viewpoint-varying image sequences; Computed tomography; Data mining; Deformable models; Image sequences; Magnetic resonance imaging; Shape; Spatial resolution; Spline; Surface fitting; X-ray imaging;
Journal_Title :
Pattern Analysis and Machine Intelligence, IEEE Transactions on
