Motion-moderated Transfer Function for Volume Rendering 4D CMR Data

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dc.contributor.authorWalton, Simonen_US
dc.contributor.authorChen, Minen_US
dc.contributor.authorHolloway, Cameronen_US
dc.contributor.editorKatja Bühler and Lars Linsen and Nigel W. Johnen_US
dc.date.accessioned2015-09-14T04:49:00Z
dc.date.available2015-09-14T04:49:00Z
dc.date.issued2015en_US
dc.description.abstractCardiovascular Magnetic Resonance (CMR) produces time-varying volume data by combining conventional MRI techniques with ECG gating. It allows physicians to inspect the dynamics of a beating heart, such as myocardium motion and blood flows. Because the material intensity changes over time in a typical CMR scan, this poses a challenging problem in specifying an effective transfer function for depicting the geometry of a beating heart or other moving objects. In this paper, we propose to moderate the traditional transfer function based on intensity and intensity gradient. This enables us to depict the exterior boundary of a beating heart in a temporally consistent manner. We examine several different ways of moderating an intensity-based transfer function, and evaluate these designs in conjunction with practical CMR data. We present a ray-casting pipeline which includes optional flow estimation and a mechanism to assist temporal coherence in animation.en_US
dc.description.sectionheadersVolume Visualizationen_US
dc.description.seriesinformationEurographics Workshop on Visual Computing for Biology and Medicineen_US
dc.identifier.doi10.2312/vcbm.20151212en_US
dc.identifier.isbn978-3-905674-82-8en_US
dc.identifier.issn2070-5786en_US
dc.identifier.pages93-102en_US
dc.identifier.urihttps://doi.org/10.2312/vcbm.20151212en_US
dc.publisherThe Eurographics Associationen_US
dc.titleMotion-moderated Transfer Function for Volume Rendering 4D CMR Dataen_US
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VCBM 15: Eurographics Workshop on Visual Computing for Biology and Medicine