NEC Display Wall Calibrator Uživatelská příručka stáhnout pdf (Strana 87)

87 | NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE

Chapter

Calibration Method Comparison

Overview

The software provides two different methods of adjusting the displays to achieve the desired calibration target settings.

The method used for the calibration is selected in the Preferences on the Advanced tab. The options are:

• Use LUTs - Uses LUTs (Look Up Tables) in the display to adjust the white point and grayscale correction. It

uses an internally generated test pattern when measuring the display. Custom gamma curves and contrast ratios

are possible. This method is slower than the Use RGB Gains method because there are more measurement steps,

and the LUT must be transmitted to each display.

• Use RGB Gains - Uses the Red, Green and Blue Gain controls on the display to adjust the white point to the

incoming video signal. A 100% white video signal must be displayed during the calibration. Custom gamma curves

can not be used, and only the xed Gamma values of 2.2, 2.4, and Native are available. This method is faster than

the Use LUTs method, but does not make any grayscale corrections.

The choice of Calibration Method to use will depend on the application and conguration of the video wall, as well as

the level of calibration that is desired, versus calibration speed.

The table on the following page compares the features of both methods.

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NEC Display Wall Calibrator Uživatelská příručka Strana 87