Test Pattern Guide - NEC SpectraView II Guia Del Usuario

55 | NEC SPECTRAVIEW II - USER'S GUIDE
Chapter
8
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.
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.

Test Pattern Guide

Several other patterns are available in SpectraView and can be selected
using the buttons at the top left of the screen, or using the left and right
arrow keys.
"QUALITY CONTROL" characters
with decreasing contrasts at minimum,
mid-point, and maximum pixel values
for simple low-contrast evaluation at
three luminance levels.
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.
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.