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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 ...
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]
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 ...
How to read your results. You may be able to glance at your audiogram to determine whether you have hearing loss: A steady line connecting your threshold levels at the top of the chart indicates ...
To test a point against the depth map, its position in the scene coordinates must be transformed into the equivalent position as seen by the light. This is accomplished by a matrix multiplication . The location of the object on the screen is determined by the usual coordinate transformation , but a second set of coordinates must be generated to ...
TOVA is a continuous performance test (CPT) used to evaluate attention-related difficulties and symptoms associated with ADHD. By presenting visual stimuli and analyzing your responses, it ...
MRI: This imaging test lets the doctor take a closer look at your brain. They can see changes caused by multiple sclerosis, like signs of inflammation in the deep parts of your brain or spinal ...
For televisions the picture line-up generation equipment ( PLUGE or pluge) is the greyscale test patterns used in order to adjust the black level and contrast of the picture monitor. Various PLUGE patterns can be generated, the most common consisting of three vertical bars of super-black, normal black, and near-black and two rectangles of mid ...
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