HP DreamColor Z31x Studio Display Bedienungsanleitung PDF herunterladen (Seite 88)

cr: Species the desired contrast ratio.

When this tag is in the XML le, a 0 black level will be calculated using the the cr and wY values. The result is a

calibration with a lower contrast ratio on-screen and a higher black level than would normally be the case.

This tag must be placed before the <calibration> element.

Validation

After calibration, the display can be instructed to measure a set of patterns and record the measurements in a

text le on the ash drive that contains the StudioCal.xml le.

Validation on/o

This tag allows you to specify whether validation will be performed post-calibration. It is an optional tag and

is required only if you want validation to be enabled. It supports an O state so that you can quickly switch

the attribute without removing all validation tags from the StudioCal XML le.

The tag contains one attribute and is structured as follows:

<validate_flag value="TRUE|FALSE"/>

If the value is set to FALSE all other validation tags in the XML ag are ignored. However, two dierent

behaviors can occur if the value is set to TRUE:

● If the other validation tags are present, the display will read those tags to determine the patterns to be

measured.

● If the other validation tags are not present, then the X-Rite ColorChecker patterns are displayed and

measured.

Validation pattern parent element

This parent element holds the child elements that will provide the RGB triplets of the patterns to be displayed.

It also contains an attribute which allows you to specify the number of patterns that will be measured. Note

that as a parent element, a closing tag must be used after the list of child elements.

The tag contains one attribute and is structured as follows:

<validation_pattern entries="INTEGER"/>

The entries attribute supports values between 1 and 10.

Validation pattern child element

The child element denes the RGB values that will be displayed for each pattern. It contains three elements

and is structured as follows:

<valid_rgb r="INTEGER" g="INTEGER" b="INTEGER"/>

All three attributes accept 8-bit values from 0 to 255.

Validation code example

The following is the XML le shown earlier, this time with the validation tags added. It will display the 100%

white, black, red, green, and blue.

<?xml version="1.0" encoding="ISO-8859-1"?>

78 Chapter 4 Using the StudioCal XML schema

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HP DreamColor Z31x Studio Display Bedienungsanleitung Seite 88