due at least in part to the sheer amount of data that must be created and sent to the display hardware. However, if only the outer surface of the volume is visible, the number of voxels required would be of the same order as the number of pixels on a conventional display. This would only be the case if the voxels do not have "alpha" or transparency values. See also Holography Volumetric Haptic Display Volumetric video Volumetric printing Virtual retinal display Display device 3D display Zebra Imaging Autostereoscopy Multiscopy Vergence-Accommodation Conflict References Footnotes Further reading Blundell, B.G., (2011). "About 3D Volumetric Displays", Walker & Wood Ltd. . (http://www.barrygblundell.com, PDF file). Blundell, B.G., (2011). "3D Displays and Spatial Interaction: Exploring the Science, Art, Evolution, and Use of 3D Technologies,Volume I: From Perception to Technologies", Walker & Wood Ltd. . (http://www.barrygblundell.com, PDF file). Blundell, B.G. and Schwarz, A J (2007). "Enhanced Visualization: Making Space for 3D Images", John Wiley & Sons. . Blundell, B.G. and Schwarz, A J (2006). Creative 3-D Displays and Interaction Interfaces: A Transdisciplinary Approach, John Wiley & Sons. . (http://www.barrygblundell.com, PDF file). Blundell, B. G. and Schwarz, A. J. (2000). Volumetric Three-Dimensional Display Systems, John Wiley & Sons. (http://www.barrygblundell.com, PDF file). Favalora, G. E. (2005, Aug.). "Volumetric 3D Displays and Application Infrastructure," Computer, 38(8), 37-44. Illustrated technical survey of contemporary and historic volumetric 3-D displays. IEEE citation via ACM Funk, W. (2008). "Hologlyphics: Volumetric image synthesis performance system," Proc. SPIE, vol. 6803, SPIE — Int'l Soc. for Optical Eng., Stereoscopic Displays and Applications XIX. PDF at author site Halle, M. (1997). "Autostereoscopic displays and computer graphics," Computer Graphics, ACM SIGGRAPH, vol. 31, no. 2, (pp. 58–62). A thoughtful and concise overview of the field of 3-D display technologies, particularly non-volumetric displays. HTML and PDF Hartwig, R. (1976). Vorrichtung zur Dreidimensionalen Abbildung in Einem Zylindersymmetrischen Abbildungstraum, German patent DE2622802C2, filed 1976, issued 1983. One of the earliest patent references for the rotating helix 3-D display. Honda, T. (2000). Three-Dimensional Display Technology Satisfying 'Super Multiview Condition.' In B. Javidi and F. Okano (Eds.), Proc. Three-Dimensional Video and Display: Devices and Systems, vol. CR76, SPIE Press, (pp. 218–249). Langhans, K., Bezecny, D., Homann, D., Bahr, D., Vogt, C., Blohm, C., and Scharschmidt, K.-H.(1998). "New Portable FELIX 3D Display," Proc. SPIE, vol. 3296, SPIE — Int'l Soc. for Optical Eng., (pp. 204–216). Includes a thorough literature review of volumetric displays. Lewis, J.