title: Fast DRR generation for 2D/3D registration.
abstract: We present a simple and rapid method for generation of perspective digitally rendered radiographs (DRR) for 2D/3D registration based on splat rendering. Suppression of discretization artefacts by means of computation of Gaussian footprints--which is a considerable computational burden in classical splat rendering--is replaced by stochastic motion of either the voxels in the volume to be rendered, or by simulation of a X-ray tube focal spot of finite size. The result is a simple and fast perspective rendering algorithm using only a small subset of voxels. Our method generates slightly blurred DRRs suitable for registration purposes at framerates of approximately 10 Hz when rendering volume images with a size of 30 MB on a standard PC.
authors: Center for Biomedical Engineering and Physics, Medical University Vienna, Austria. wolfgang.birkfellner@meduniwien.ac.at
authors: W
authors: W
authors: Birkfellner
authors: R
authors: R
authors: Seemann
authors: M
authors: M
authors: Figl
authors: J
authors: J
authors: Hummel
authors: C
authors: C
authors: Ede
authors: P
authors: P
authors: Homolka
authors: X
authors: X
authors: Yang
authors: P
authors: P
authors: Niederer
authors: H
authors: H
authors: Bergmann