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‎README.md‎

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| [Home](../index.html) \|  | [Java](../BiQuadDesigner/index.html) \|  | BiQuadDesigner FFTExplorer HDTV Test Pattern JDBClient JNX JSQLiteClient JSigGen JTides Home Page JWX MagicLantern OpticalRayTracer PLCalc PLCash | [<img src="../images/leftarrow.png" title="Click for prior page"
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data-border="0" />](../FFTExplorer/index.html) | [<img src="../images/rightarrow.png" title="Click for next page"
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data-border="0" />](../JDBClient/index.html) |  [<img src="../images/addthis16.gif" style="border:0px;" />  Share This Page](../administration/submit.php "Recommend this page to friends") |
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<div align="center">
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<div class="article_title_inverse">
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HDTV Test Pattern
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</div>
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<div class="article_linklist_inverse">
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*A resource for configuring flat-panel video displays*
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— [P. Lutus](../administration/index.html "Click for biography") —
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[Message Page](../messages) —
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Copyright © 2014, [P.
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Lutus](../administration/index.html "Click for biography")
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Version 2.0 (08.30.2014)
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(double-click any word to see its definition)
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<div align="center" style="width:500px">
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<a href="#Introduction" data-name="html-menu">Introduction</a> \|
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<a href="#Acquire__Install" data-name="html-menu">Acquire, Install</a>
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\| <a href="#Run__Display" data-name="html-menu">Run, Display</a> \|
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<a href="#Use" data-name="html-menu">Use</a> \|
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<a href="#Copyright__Version" data-name="html-menu">Copyright,
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Version</a>
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</div>
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</div>
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</div>
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<div class="article_wrapper">
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<div class="roundcorner_16_parch_content">
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<div align="center">
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<div style="width:640px;height:360px;">
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<img src="resources/HDTVTestPattern.png"
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title="Click me for full-size &amp; full-screen" id="myimage"
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style="width:100%;" onclick="fullScreen(this);" />
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Figure 1: HDTV Test Pattern image
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(small scale, click image for full size and full-screen display)
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</div>
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</div>
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<span id="Introduction"
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data-name="html-menu"></span><span class="article_subtopic">Introduction</span>
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> After it expired without warning (and after eight trouble-free years
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> of service), I recently replaced my big, old Pioneer plasma panel. The
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> new panel is a Sony LCD panel with all the bells & whistles I had
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> realized I was missing with the old panel.
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>
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> Because the old panel didn't have HDMI sockets, I hadn't adopted this
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> technology, but the new panel — and every other piece of gear I own —
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> has HDMI sockets. I decided it was time.
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>
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> HDMI is controversial on the ground that it protects the data stream
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> and prevents copying, even copying of content that the user owns. It
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> can be looked on as yet another step toward complete behavioral
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> control of electronic media consumers. But apart from this legitimate
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> grievance, HDMI is a terrific technology.
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>
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> HDMI eliminates the only analog link in the chain between a digital
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> camera, a digital content delivery stream, and a digital display
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> panel. And the result is just what you would expect — much better
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> images, much more consistent in quality from one source to another.
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>
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> But in the midst of this digital technology, there's one element that
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> needs user attention — the panel itself. Your display panel, by being
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> in your environment with its temperatures, line voltages, and ambient
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> lighting, requires a bit of fine-tuning to deliver the best results.
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>
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> I realized this, so I decided to look for an "official" testing and
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> adjustment method. I found a nice collection of dynamic test patterns
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> called
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> ["AVSHD709"](http://www.avsforum.com/avs-vb/showthread.php?t=948496),
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> available in a number of formats. In its most common embodiment, this
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> is an ISO disk image file meant to be burned onto a writable DVD,
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> which is then displayed with your DVD/Blu-ray player. I recommend this
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> source for high-quality patterns — and here is [another
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> source](http://www.wuala.com/alluringreality/Public/) for the same
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> content.
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>
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> But while wading through all the patterns and tutorials on the
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> AVSHD709 DVD I quickly realized there were only a few tests and
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> adjustments relevant to a home theater flat panel — overscan,
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> brightness, contrast, color, and hue. I decided to create a single,
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> easily accessed test pattern generator that automatically adjusts to
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> the size of your display, explains itself, and displays the most
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> important test content. This project is the result.
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<span id="Acquire__Install"
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data-name="html-menu"></span><span class="article_subtopic">Acquire,
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Install</span>
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> HDTVTestPattern is a Java program that will run on virtually any
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> platform — and if you have a platform it won't run on, I have a backup
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> plan for you — I provide the image it creates for a 1920x1080 display
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> as a PNG grahic image. Here are the download options:
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>
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> - [HDTVTestPattern.jar](resources/HDTVTestPattern.jar) — the Java
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> program.
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> - [HDTVTestPattern.png](resources/HDTVTestPattern.png) — a 1920x1080
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> size graphic of the Java program's output.
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> - [HDTVTestPattern_source.tar.bz2](resources/HDTVTestPattern_source.tar.bz2)
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> — a source archive for the Java program, organized as a NetBeans
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> project, released under the
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> [GPL](http://www.gnu.org/copyleft/gpl.html).
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>
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> To display the graphic image linked above, just click its link. To
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> download it, right-click the link and choose "Save as ..." or "Save
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> link as ...", depending on your browser's menu options.
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>
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> To "install" the Java program, just download the first choice in the
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> above list and place it anywhere convenient.
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<span id="Run__Display"
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data-name="html-menu"></span><span class="article_subtopic">Run,
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Display</span>
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> There are a number of ways to get the HDTVTestPattern content onto
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> your flat panel. The easiest is obviously to connect an HDMI cable
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> between your computer and your panel (an increasingly frequent step
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> taken by people who want to gain access to Web content for their home
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> theaters), then run the Java program downloaded in the above step.
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>
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> To run the Java program from Windows, just click the jar file you
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> downloaded earlier. If you have Java installed on your computer, the
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> program will run. If you don't have Java installed, [get it
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> here](http://java.com) — it's free.
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>
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> To run the Java program from Linux, open a shell in the directory
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> where HDTVTestPattern.jar is located and type:
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>
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> > java -jar HDTVTestPattern.jar
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> >
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>
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> As above, if you don't have Java installed, you can [get it
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> here](http://java.com) — it's free.
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>
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> If you want to generate a graphic image as shown above, for use where
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> Java won't be available, run the program this way:
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>
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> > java -jar HDTVTestPattern.jar -f
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> >
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>
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> (Note the "-f" argument at the right.)
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<span id="Use"
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data-name="html-menu"></span><span class="article_subtopic">Use</span>
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> Since I don't know what kind of panel you have, for this step I can
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> only offer generic advice:
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>
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> 1. Most panels are factory adjusted to provide a garish display of
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> saturated color and extreme picture settings. This is based on
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> market research of typical consumers and what propels them to buy
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> a panel in the first place.
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>
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> 2. In this section, we will make settings more likely to please the
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> eye of someone watching a nature program, or a science
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> documentary, than a rerun of the Gong Show.
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>
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> 3. At the top of the test pattern is the size of your panel in
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> pixels. For true HDTV it should be 1920x1080 pixels. If this is
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> not the size of your display, you're not watching HDTV. This may
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> or may not be a matter of concern to you, but it's likely that the
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> test pattern won't display correctly on substantially smaller
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> displays.
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>
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> 4. Next, under "Basic Settings," you will see a notice about the
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> white border surrounding the test pattern. If you can't see this
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> white border, by all means adjust your panel's display area to a
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> setting variously called "full pixel" or "full scan". For
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> old-style analog vacuum-tube displays,
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> [overscan](http://en.wikipedia.org/wiki/Overscan) was a "good
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> thing™", but with geometrically perfect flat panels, it serves no
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> purpose — indeed, if you think about it, with overscan you're
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> throwing away part of the image you spent so much to acquire.
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>
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> 5. Moving on, we come to what is probably the single most important
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> setting — black level. This adjustment is usually made with your
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> panel's brightness control. Adjust your panel's control so the
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> brightness levels at index "16" (the "Black Reference" level) and
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> farther to the left are black — indistinguishable from their
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> surroundings. It may be better to conduct this adjustment in a
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> dark room, or if not dark, in typical viewing circumstances.
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>
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> 6. The next adjustment is the white-level equivalent of the above
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> dark setting. Use your panel's "Picture" or "Contrast" control for
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> this setting, and adjust it so the white levels at "White
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> Reference" and to the right are indistinguishable.
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>
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> 7. In much the same way, but while monitoring the color bars, adjust
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> the "Color" control so the bars to the right of "White Reference"
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> are indistinguishable.
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>
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> 8. In steps 5, 6 and 7 above, the goal is to have clearly visible,
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> even brightness steps from the "Black Reference Level" to the
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> "White Reference" level, and to the right of the white reference
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> level the steps should merge into a single brightness level
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> (technically called "saturation"). Also, on some panels it may be
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> necessary to repeat steps 5, 6 and 7 because they may interact.
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>
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> 9. Now for the most-often-abused panel setting — variously called
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> "Hue" or "Tint". For a properly designed panel that isn't broken
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> in some way, the best thing to do is set this control to midrange
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> and forget it. Modern electronics is vastly more reliable and
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> repeatable than older equipment, and the probability that you will
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> need to adjust the tint control is correspondingly small. But if
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> you must, then adjust this control while monitoring the yellow
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> color bar. I've noticed that most people are better able to
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> identify a true yellow (an equal mixture of red and green) than
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> any other color. Chances are, if your color vision is normal and
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> your panel isn't broken, you will discover that your final setting
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> is ... mid-range.
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>
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> There are other settings that aren't in the purview of this test
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> pattern, among which are sharpness and color temperature. Some
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> comments:
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>
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> 1. For some reason, the manufacturers of my panel (Sony) by default
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> puts the sharpness control at its minimal setting, but normal
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> detail is lost in that setting. I find that a midrange sharpness
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> setting gives the best results — details aren't smeared, and there
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> are no unrealistic artifacts. I find the best way to set sharpness
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> is to view black text on a white background — if the sharpness is
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> set too low, letters will be smeared and not crisp. If set too
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> high, each black letter has a white halo, an artifact of the
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> mathematical method used to increase sharpness. And as with tint
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> adjustment, one often finds the optimal setting is midrange.
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>
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> 2. Color temperature adjustment is, to a greater degree than other
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> settings, a matter of personal taste. It's easier to set while
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> watching a typical program than while looking at a test pattern.
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>
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> Having made these standard adjustments, panel owners are then free to
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> make adjustments to suit personal taste. The point of these
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> adjustments is to set a baseline for realistic display of video
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> content, which one may surmise is the goal of having a modern flat
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> panel.
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<span id="Copyright__Version"
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data-name="html-menu"></span><span class="article_subtopic">Copyright,
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Version</span>
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> The HDTVTestPattern program and image are copyright 2014, P. Lutus.
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> All rights reserved. The Java program is released under the
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> [GPL](http://www.gnu.org/copyleft/gpl.html).
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>
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> Version history:
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>
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> - Version 2.0 08.30.2014 : On user request, corrected maximum white
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> from 252 to 255.
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> - Version 1.0 11.17.2011 : Initial public release.
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</div>
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</div>
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| | | | | | |
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|---------------------------|------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------|------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------|
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| [Home](../index.html) \|  | [Java](../BiQuadDesigner/index.html) \|  | BiQuadDesigner FFTExplorer HDTV Test Pattern JDBClient JNX JSQLiteClient JSigGen JTides Home Page JWX MagicLantern OpticalRayTracer PLCalc PLCash | [<img src="../images/leftarrow.png" title="Click for prior page"
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data-border="0" />](../FFTExplorer/index.html) | [<img src="../images/rightarrow.png" title="Click for next page"
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data-border="0" />](../JDBClient/index.html) |  [<img src="../images/addthis16.gif" style="border:0px;" />  Share This Page](../administration/submit.php "Recommend this page to friends") |

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