Ron...excellent!!
There is a huge shortage of HD patterns to use for calibration and your willingness to host and even create such patterns will be a very valuable addition to those of us who would like to calibrate our HD setups (me...
).
I appreciate any and all patterns that you will contribute, but here is my wish list. I originally posted this with the intentions of putting together a DIY DVD calibration disc, but the same patterns are equally valuable for HD, and they are much harder to get in either 601 or 709 color space, and nonexistent AFAIK in .ts format.
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Here's what I figure:
DVE reverse ramps - to check for BTB and WTW and to get a general idea of the grayscale calibration - precalibration procedure
DVE color bars (horizontal on white background) - to check and adjust color decoding
AVIA PRO secondary color checkerboard - to check and adjust hue/tint
75% red window
75% green window
75% blue window
75% cyan window
75% magenta window
75% yellow window
full field black
10% white window
20% white window
30% white window
40% white window
50% whilte window
60% white window
70% white window
80% white window
90% white window
100% white window
75% white (for tristimulus chart)
and then I went on a rant as to how I would recommend setting up a calibration disc:
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If I were to organize a disc, I would make it incredibly simple to navigate. and put all of the "fluff" elsewhere. Or, at least make it very simple to get to the "professional" patterns right from the main menu and then make it easy to navigate. Avia comes pretty close, but still has its problems - too many submenus. Put the "meat and potatoes" patterns in one section, and then put all of the extra and/or specialized patterns in another.
That is, there should be a "calibration" menu that is further subdivided by categories like:
1. Basic - including color bars and patterns for setting brightness and contrast, as well as check for the ability to pass BTB and WTW. Just include the BEST patterns to get the job done, not EVERY pattern you can imagine. Put the alternative patterns elsewhere.
2. Color - 75% windows in all 6 colors
3. Grayscale - 100% black, 100% white fields, and the 10% to 100% windows in 10% increments (all *labeled* on screen to avoid mistakes, and all verified to be color correct)
4. Crosshatch - for CRT convergence and geometry
You get the idea. Within each subcategory, all patterns should be chaptered and set to infinitely loop to avoid timing out if the calibrator is delayed. By using chapters, the calibrator can just hit the "previous" or "next" button on the remote to switch from one to another - a lot faster than going back to ANY menu. And since the patterns are *labeled* on screen, there is no chance of putting up the wrong pattern. Then put all of the specialized and/or alternative patterns in another area and organize those similarly for equal ease of use. There is no reason, for example, to have 20 different sets of color bars in a section when you only need one or two to get the job done. That just forces needless navigation.
The amount of patterns necessary to do even a full professional level calibration is not all that many, especially if the patterns are selected judiciously. Putting together a disc using .ts format will be incredibly simple.
Ron, I'm not suggesting that you do all of this work. This is just a list of *ideal* patterns that are normally needed for professional level calibration. But you asked, so I didn't feel shy about responding...
Thanks again! This is a wonderful effort on behalf of the forum!
