The alpha-histogram: Using Spatial Coherence to Enhance Histograms and Transfer Function Design
2006 (English)In: Proceedings Eurographics/IEEE Symposium on Visualization 2006, Lisbon, Portugal, 2006, 227-234 p.Conference paper (Other academic)
The high complexity of Transfer Function (TF) design is a major obstacle to widespread routine use of Direct Volume Rendering, particularly in the case of medical imaging. Both manual and automatic TF design schemes would benefit greatly from a fast and simple method for detection of tissue value ranges. To this end, we introduce the a-histogram, an enhancement that amplifies ranges corresponding to spatially coherent materials. The properties of the a-histogram have been explored for synthetic data sets and then successfully used to detect vessels in 20 Magnetic Resonance angiographies, proving the potential of this approach as a fast and simple technique for histogram enhancement in general and for TF construction in particular.
Place, publisher, year, edition, pages
2006. 227-234 p.
Picture/Image Generation; Methodology and Techniques; Three-Dimensional Graphics and Realism
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-13946DOI: 10.2312/VisSym/EuroVis06/227-234OAI: oai:DiVA.org:liu-13946DiVA: diva2:22276