Visualization of Cardiac Blood Flow Using Anisotropic Ambient Occlusion for Lines

dc.contributor.authorKöhler, Benjaminen_US
dc.contributor.authorGrothoff, Matthiasen_US
dc.contributor.authorGutberlet, Matthiasen_US
dc.contributor.authorPreim, Bernharden_US
dc.contributor.editorMatthias Hullin and Reinhard Klein and Thomas Schultz and Angela Yaoen_US
dc.date.accessioned2017-09-25T06:54:54Z
dc.date.available2017-09-25T06:54:54Z
dc.date.issued2017
dc.description.abstractAmbient occlusion (AO) for lines (LineAO) was introduced by Eichelbaum et al. [EHS13] as an adaption of screen-space AO to static line bundles, such as white brain matter fiber tracts derived from diffusion tensor imaging (DTI). In this paper, we further adapt the LineAO technique to dynamic scenes, in particular the animation of blood flow-representing pathlines that were integrated in cardiac 4D phase-contrast magnetic resonance imaging (PC-MRI) data. 4D PC-MRI is a non-invasive technique that allows to acquire time-resolved blood flow velocity data in all three spatial dimensions, i.e., a 4D vector field of one heart beat. Our main extension is a line alignment factor that reduces the AO-induced darkening if nearby lines have similar screen-space tangents. We further enhance the perception of homogeneous flow by incorporating depth-dependent halos. Our technique facilitates the quicker identification of prominent flow structures while showing the full flow context.en_US
dc.description.sectionheadersIllustrative Rendering
dc.description.seriesinformationVision, Modeling & Visualization
dc.identifier.doi10.2312/vmv.20171256
dc.identifier.isbn978-3-03868-049-9
dc.identifier.pages29-36
dc.identifier.urihttps://doi.org/10.2312/vmv.20171256
dc.identifier.urihttps://diglib.eg.org:443/handle/10.2312/vmv20171256
dc.publisherThe Eurographics Associationen_US
dc.subjectI.3.7 [Computer Graphics]
dc.subjectThree Dimensional Graphics and Realism
dc.subjectColor
dc.subjectshading
dc.subjectshadowing
dc.subjectand texture
dc.subject
dc.subjectJ.3 [Computer Applications]
dc.subjectLife and Medical Sciences
dc.titleVisualization of Cardiac Blood Flow Using Anisotropic Ambient Occlusion for Linesen_US
Files
Original bundle
Now showing 1 - 2 of 2
Loading...
Thumbnail Image
Name:
029-036.pdf
Size:
13.53 MB
Format:
Adobe Portable Document Format
No Thumbnail Available
Name:
vmv2017-anisotropic-lineao.mp4
Size:
178.52 MB
Format:
Unknown data format
Collections