apictureorpatternthat isbroadcastso that thequalityof thetelevisionpicturereceivedcan beexaminedandimprovedifnecessaryby using thecontrolson theequipment
For example, in the secondtestpatternset, r was set to 5% for all example images rather than being ranged from 0% to 5%.
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The output activations were recorded for eachtestpatternand were evaluated in the following way.
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Eleven networks were trained, one per training pattern set, and tested on all 11testpatternsets.
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Also, until somewhere between 10% and 15%testpatternnoise, its performance was below that of the network with variable thresholds.
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We hypothesize that the crucial factor is the relationship between the temporal frequency of the adapting pattern and the temporal frequency of thetestpattern.
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This network correctly classified 94% of patterns at 15%testpatternnoise, reducing to 82% correct classifications at 20%testpatternnoise.
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The best performance is for character "1" which, even at 50%testpatternnoise, was correctly classified more than 50% of the time.
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Sequential automatictestpatterngeneration by constraint programming.
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The output of atestpattern, when testing a fault-free device that works exactly as designed, is called the expected output of thattestpattern.
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At 8:35 p.m. that evening, the transmitter was turned on with a colour bartestpatternbeing broadcast.
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In a full scan design, automatictestpatterngeneration is particularly simple.
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At that point, the station signed on at 2:00 p.m. each weekday, running atestpatternuntil regular programming began at 4:00 p.m.
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Programming on the station during this time is currently unknown, although it did broadcast atestpattern.
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Production tests are often designed by software tools calledtestpatterngenerators.
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Its test signal constisted of a colortestpatternand the network's music.
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This example is from Wikipedia and may be reused under a CC BY-SA license.