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This story is from the category Display Technology
Date posted: 24/12/2008 Researchers Benjamin Mora and Min Chen of Swansea University in Singleton Park, Swansea, UK, along with Ross Maciejewski and David S. Ebert of the Purdue School of Electrical and Computer Engineering in West Lafayette, Indiana, US, have developed a technique that improves the image quality in volumetric 3D displays. Their study will appear in an upcoming issue of IEEE Transactions on Visualization and Computer Graphics. One of the biggest problems with volumetric displays is the difficulty in portraying shading of object surfaces and displaying opaque objects, both of which are common in real-world situations. To improve these traits, the researchers developed a new technique that modifies the original input data in such a way as to allow the light rays to produce more shading and darkening effects. They call the modified dataset a ?lumi-volume.? The researchers demonstrated that, when they fed the lumi-volume data into the IEVD, the emitted light field and image contained shading effects as good as the shading found in images rendered on a traditional 2D computer screen ? an achievement that was once thought to be impossible. The technique could also generate better quality opaque objects. ?Our paper mathematically formalizes the rendering equation/model for these displays, minimizing the difference between the intended 3D output and the actual one,? Mora told PhysOrg.com. ?Without such formalization, shading cannot be kept under control. This can be compared with the traditional use of such a display by spatially lighting and coloring the 3D object's surface, which is intuitive from a modeling point of view, but, unfortunately, cannot reproduce proper shading.? See the full Story via external site: www.physorg.com Most recent stories in this category (Display Technology): 08/02/2017: New method improves accuracy of imaging systems |
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