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  2. Indian-head test pattern - Wikipedia

    en.wikipedia.org/wiki/Indian-head_test_pattern

    Indian-head test pattern. The Indian-head test pattern is a test card that gained widespread adoption during the black-and-white television broadcasting era as an aid in the calibration of television equipment. It features a drawing of a Native American wearing a headdress surrounded by numerous graphic elements designed to test different ...

  3. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/.../1951_USAF_resolution_test_chart

    A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens. It is widely used in optical engineering laboratory work to analyze and ...

  4. SMPTE color bars - Wikipedia

    en.wikipedia.org/wiki/SMPTE_color_bars

    SMPTE color bars are a television test pattern used where the NTSC video standard is utilized, including countries in North America. The Society of Motion Picture and Television Engineers (SMPTE) refers to the pattern as Engineering Guideline (EG) 1-1990. [1] Its components are a known standard, and created by test pattern generators.

  5. List of video game console palettes - Wikipedia

    en.wikipedia.org/wiki/List_of_video_game_console...

    List of video game console palettes. This is a full list of color palettes for notable video game console hardware. For each unique palette, an image color test chart and sample image (original True color version follows) rendered with that palette (without dithering unless otherwise noted) are given. The test chart shows the full 8-bit, 256 ...

  6. Test card - Wikipedia

    en.wikipedia.org/wiki/Test_card

    Test card. A test card, also known as a test pattern or start-up/closedown test, is a television test signal, typically broadcast at times when the transmitter is active but no program is being broadcast (often at sign-on and sign-off ). [1]

  7. How to Use the Amsler Grid to Test Your Vision - Healthline

    www.healthline.com/health/using-the-amsler-grid

    Here’s how to use the Amsler grid as part of monitoring your wet AMD: 1. Print out the Amsler grid. The Amsler grid looks best on pure white matte paper. You can get your own copy to print off ...

  8. Multiburst - Wikipedia

    en.wikipedia.org/wiki/Multiburst

    A multiburst waveform is a useful test pattern used to quickly ascertain the frequency response of a video system. The name derives from the multiple bursts of sine wave in the active video section of the waveform which are generated with (usually) increasing frequency, but identical in amplitude. The test pattern is usually input at the start ...

  9. Computer Vision Syndrome: Causes, Symptoms and Treatments - WebMD

    www.webmd.com/eye-health/computer-vision-syndrome

    Change the lighting around you to reduce the effect on your computer screen. If light from a nearby window casts a glare, move your monitor and close the shades. Ask your employer to install a ...

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