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I am occasionally asked about some of the more technical details in my work with color imaging devices. Here is some of the material I have published or presented over the years, listed in reverse chronological order.
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The Colors of the Deep Sky (pdf, 1.5MB). Tenth Color Imaging Conference, Scottsdale AZ, 2002. Poster session (pdf, 1.2MB). A more graphic presentation of this material, formatted for print on four 11"x17" pages. |
How to make "true color" renderings of popular astrophoto targets, especially emission nebulas. |
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Smooth Ramps: Walking the Straight and Narrow Path through Color Space (pdf, 1.5MB). Seventh Color Imaging Conference, Scottsdale AZ, 1999. |
Some color engineering concepts behind what is needed to do smooth (artifact-free) shading in color printers. |
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The Colors of the Stars (pdf, 780K). Sixth Color Imaging Conference, Scottsdale AZ, November 1998. |
Borrowing David Malin's great book title, here is the basis behind my color star maps. |
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SIGGRAPH 97 Course 27: Scanning and Recording of Motion Picture Film (pdf, 1.3MB) |
A second course that includes the above and more. |
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Color Film Exposure in CRT
Image Recorders (pdf, 300K) |
The process of exposing color film by a CRT recorder is described. In particular, the spectral relationships between the CRT light source, its color separation filters, and film characteristics are presented and discussed. |
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SIGGRAPH 96 Course 23: Digital Color (pdf, 1.3MB) |
Basic concepts and issues with film recording and digital color |
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Behind Gamma's
Disguise (pdf, 300K) |
More than you ever wanted to know about the value of gamma in a cathode ray tube. |
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Digital Film 2: Good Grays and
Continuous Colors (pdf, 360K) |
In which the number of bits required to represent a black to white ramp is established (it's more than 8). |
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Digital Film: Hiding the
Raster (pdf, 250K) |
Don't confuse sharpness with resolution. This paper illustrates the requirements for pixel size and spacing in digital images. |