Fulldome Display Specifications: A Proposal. Ed Lantz President Visual Bandwidth, Inc. email@example.com. Fulldome Standards Summit L’Hemispheric CIUDAD DE LAS ARTES Y LAS CIENCIAS Valencia, Spain July 7-8, 2004. Fulldome Systems. Single Projector (Fisheye).
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Fulldome Standards SummitL’HemisphericCIUDAD DE LAS ARTES Y LAS CIENCIASValencia, SpainJuly 7-8, 2004
Polar Source is Split Into Sub-Frames and Edge-Blended
Sub Frame 1 Sub Frame 2 Sub Frame 3 Sub Frame 4
Five Projectors Six Projectors Seven Projectors
Display Brightness (fL) = Screen Reflectance * Light Output (lumens)/Screen Area (sq. ft.)
Bpp (%) = (Bmax – Bmin)/Bavg * 100
1931 CIE x,y Chromaticity Diagram
Courtesy LEDtronics, Inc.
MacAdam ellipses shown on the CIE 1931 (x,y)
chromaticity diagram at 10x magnification
Do we want to ask our industry to purchase and utilize spectrophotometers? Perhaps not. For now we can be assured of first-order color uniformity by requiring Color Uniformity and Blend Uniformity specifications to hold for all three primary colors in addition to white. This technique makes the assumption that the RGB primaries on all projectors are well matched at the factory.
50% MTF Requirement for Defining CRT Resolution
[Wyszecki 1982] G. Wyszecki & W.S. Stiles, Color Science: Concepts and Methods, Quantitative Data and Formulae, John Wiley & Sons, New York, 1982
[Halsted 1993] Charles P. Halsted, “Brightness, Luminance, and Confusion,” Society for Information Display, March 1993, http://www.crompton.com/wa3dsp/light/lumin.html