GCD - Gamut Calibration Disk - Page 8

Respected Zoyd!
Why in your color checker palette in GCD_targets v8.xlsx.zip in measured table not taken into account Y [cd/m2] for all colors?
Mistake?

yes, thank you. Attached version fixed, please trash previous version.


94 or 2000, they are very close to each other.

 

GCD_targets v9.xlsx.zip 149.2275390625k . file

Thank you very match.

Why not change the gamma in calculation?

Which calculation? I don't understand the question.

in your table list:
1) color targets
2) gamma target
3) calculation
4) worksheet

gamma in calculation i can not change

You can change gamma on tab 1.

Not work button pop-up menu.
Why pattrens 10% area rather than 12% area - recommendations THX?
Signature at the bottom patterns prevents the calibration plasmas.

Good to have expand the color checker patterns.

So I did

I had recently learned from the professional (THX 2) these data.
It is important for plasma.
I have LED - this is why I am not particularly worried about.
Professionals (THX/ISF) hide the information, and laugh at the fans!

Valuable information for free, and worth the money they do not want to give.
They've got probably the law of omerta.

Demand much? Whether we use 10 or 12% window size is irrelevant so we chose 10% (close to accupel generator size).

Which additional colors would you add and why?

Are you worried about image retention from the annotation? That can happen with any fixed pattern so follow common sense usage.

requirements THX for calibration plazm - 12%(private information onto a closed NDA) (I invented it does not I do not care I do not have a plasma).

I wrote about the inscription verbatim quote from the professional.
"Major label can be placed plasma configuration"

"Which additional colors would you add and why?"
I do not know.
But I think that they need to expand because the films are used:
greyscale - 10-90
colors - 30-80

The idea with the color checker is not to try and quantify all film(video) levels but to have a selection of "memory" colors (1-5) and other key gamut points (6-12) so as to weight the most important sub-set of the gamut more heavily than the standard calibration points if your display has a non-linear CMS. Displays like plasmas and LCD which do not have well separated primaries will always have some level of non-linearity.

that is, it will be enough

"have a great Russian proverb-
the best the enemy of good"

1) Why not be used patterns in the form of pictures in JPEG (RGB->YCbCr 4:4:4 or 4:2:0 or lossless JPEG)?
2) for LED TV can use fields patterns?

if you create a 12% patterns with APL what should be APL - 10% or 15% or 20% or another?

What do I use patterns to calibrate my LED Samsung UE55B7000?

why THX recommends that for the plasma 12% patterns?

I propose to use YCbCr 4:4:4 - player Pioneer,Samsung correctly - look http://www.hometheaterhifi.com/blu-r...s-reviews.html

How to count APL for each pattern?

I want to do for yourself only 75/75 RGBYCMW and greyscale with 12% patterns!

What should be APL background full field on LED so as not to trigger ABL ?


Only 25% or can be 50% or any?

A better way to APL = 60 cd/m2 (50% of the 120 cd/m2)?

And for 12% patterns what should be APL?

Great news!

Here is the latest disk worksheet, can you attach to post #1 - thanks.

GCD_targets v11.xlsx 176k .xlsx file



edit: gave the new disk a quick check and couldn't find any pop-ups active.
Edited by zoyd - 6/17/12 at 8:49am