Official Panasonic VT60/VT65 Series Discussion Thread [No Street Price Talk] - Page 535 - AVS | Home Theater Discussions And Reviews
Baselworld is only a few weeks away. Getting the latest news is easy, Click Here for info on how to join the Watchuseek.com newsletter list. Follow our team for updates featuring event coverage, new product unveilings, watch industry news & more!


Forum Jump: 
Reply
Thread Tools
post #16021 of 16022 Old Yesterday, 03:46 AM
AVS Special Member
 
zoyd's Avatar
 
Join Date: Sep 2006
Location: Planet Dog
Posts: 5,521
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 757 Post(s)
Liked: 660
Quote:
Originally Posted by fluxo View Post
He writes "A reference white of D50 (ICC default) and complete chromatic adaption of the viewer to the display's whitepoint is assumed if “simulate whitepoint relative to target profile whitepoint” is used, so the measured XYZ values are adapted to D50 [...]".

Do you think he wants to provide values that correctly describe the report patches as shown on a computer display?
My reading of it was that D50 is being used because that's standard for ICC profiles. But you should pose your questions directly to Florian on his DCG forum here.

Quote:
Initially, I wanted to know how the 493 sample patches were chosen.
The verification patches consist of the typical neutral and color axis luminance ramps plus a number of randomly distributed patches [not aligned with the profiling patches] to test the robustness of the calibration. The number of random patches you use is somewhat arbitrary but users have found that several hundred up to 1000 have been sufficient to get repeatable assessments across a variety of displays.
zoyd is online now  
Sponsored Links
Advertisement
 
post #16022 of 16022 Unread Today, 06:40 AM
Senior Member
 
fluxo's Avatar
 
Join Date: Oct 2012
Posts: 286
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 108 Post(s)
Liked: 96
Quote:
Originally Posted by zoyd View Post
My reading of it was that D50 is being used because that's standard for ICC profiles. But you should pose your questions directly to Florian on his DCG forum here.
If I get a chance, I will do that, thanks. Or perhaps sillysally would take the opportunity to ask why the D65 reference white point is wrong, as he uses the program?

I've been doing some further coding today, as a result of which I have generated a table that can be glimpsed at in this post. During the course of that exercise I decided to check the CIEDE2000 errors as listed in the report table. The good news is that the values I have checked (a small sample) look fine, with only a hint of the occasional possible rounding error.

I was starting to worry that that would not be the case, because if oddities existed elsewhere then who could say what would happen during the calculation of the hideously complicated error function? Fortunately, any fears appear to have been unfounded.
fluxo is online now  
Reply Plasma Flat Panel Displays

Tags
Panasonic Tc P65vt60 65 Inch 3d Smart Plasma Hdtv , Panasonic , Panasonic Tcp65 65 Inch Vt25 3d Plasma Tv , Panasonic Tc P60vt60 60 Inch 3d Smart Plasma Hdtv , Panasonic Tc P55vt60 55 Inch 3d Smart Plasma Hdtv
Gear in this thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off