NEC LCD2490WUXIBKSV MultiSync LCD2090UXi-BK-SV : spectraview II user's guide - Page 46

Test Pattern Guide

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46 | SPECTRAVIEW II - USER'S GUIDE 9 Test Pattern Guide The SpectraView II software includes several test patterns that are useful in evaluating the monitor calibration. It is also good practice to use the Test Patterns to quickly visually verify the integrity of the calibration. A pattern based on the DICOM TG18-GC test pattern has a number of useful features that allow very detailed analysis of the monitor grayscale performance in one pattern. The main features of this pattern are described below. Line-pair patterns for resolution evaluation, having pixel values of 0-255 and 128-130. 256 level grayscale with 2 lines per level. Grey background of pixel value 128. Sixteen luminance patches with pixel values varying from 8 to 248 for luminance response evaluation. Each patch contains four small 10x10 pixel corner patches at ±4 of pixel value difference from the background, +4 in upper-left and lower-right, -4 in lower-left and upper-right. The small patches are used for visual assessment of luminance response. "QUALITY CONTROL" characters with decreasing contrasts at minimum, mid-point, and maximum pixel values for simple low-contrast evaluation at three luminance levels. Two patches of minimum and maximum pixel value with 13, and 242 pixel value internal patches, similar to 5% and 95% areas in the SMPTE test pattern. Several other patterns are available in SpectraView and can be selected using the buttons at the top left of the screen, or using the [ and ] keys.

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SPECTRAVIEW II - USER’S GUIDE
9
Test Pattern Guide
The SpectraView II software includes several test patterns that are useful in evaluating the monitor calibration. It is
also good practice to use the Test Patterns to quickly visually verify the integrity of the calibration.
A pattern based on the DICOM TG18-GC test pattern has a number of useful features that allow very detailed
analysis of the monitor grayscale performance in one pattern. The main features of this pattern are described
below.
“QUALITY CONTROL” characters
with decreasing contrasts at minimum,
mid-point, and maximum pixel values
for simple low-contrast evaluation at
three luminance levels.
Sixteen luminance patches with pixel values
varying from 8 to 248 for luminance response
evaluation. Each patch contains four small
10x10
pixel corner patches at ±4 of pixel value
difference from the background, +4 in upper-left
and lower-right, -4 in lower-left and upper-right.
The small patches are used for visual assessment
of luminance response.
Two
patches
of
minimum
and
maximum pixel value with 13, and
242 pixel value internal patches,
similar to 5% and 95% areas in the
SMPTE test pattern.
256 level grayscale with
2 lines per level.
Line-pair patterns for
resolution evaluation,
having pixel values of
0-255 and 128-130.
Grey background of
pixel value 128.
Several other patterns are available in SpectraView and can be selected
using the buttons at the top left of the screen, or using the [ and ] keys.