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Table 2 Comparison of VIPER functional performance with and without correction

From: Preliminary evaluation of the VIsion PERformance (VIPER) simulator

 With correctionWithout correctionp-value
Road signs
 Detection distance, m (mean ± SD)117.6 ± 39.340.8 ± 44.3<.001
 *True detection rate, %98.9 ± 4.273.3 ± 36.3<.001
 †False detection rate, % (mean ± SD)34.7 ± 17.824.8 ± 26.6.084
 Identification distance, m (mean ± SD)21.6 ± 6.77.6 ± 7.4<.001
 Accuracy, % (mean ± SD)83.5 ± 18.127.9 ± 37.2<.001
IEDs
 Detection distance, m (mean ± SD)29.9 ± 8.2113.19 ± 13.6<.001
 True detection rate, %59.5 ± 17.822.2 ± 24.8<.001
 False detection rate, % (mean ± SD)67.5 ± 19.946.1 ± 41.0.008
 Identification distance, m (mean ± SD)32.2 ± 6.177.43 ± 10.25<.001
 Accuracy, % (mean ± SD)46.67 ± 20.6011.39 ± 17.30<.001
  1. \( \ast \mathrm{True}\ \mathrm{detection}\ \mathrm{rate}=\frac{\mathrm{Correctly}\ \mathrm{detected}\ \mathrm{road}\ \mathrm{signs}\ \mathrm{or}\ \mathrm{IEDs}}{6\ \mathrm{sets}\ \mathrm{of}\ \mathrm{road}\ \mathrm{signs}\ \mathrm{or}\ \mathrm{IEDs}} \)
  2. \( \dagger \mathrm{False}\ \mathrm{detection}\ \mathrm{rate}=\frac{\mathrm{Falsely}\ \mathrm{detected}\ \mathrm{road}\ \mathrm{signs}\ \mathrm{or}\ \mathrm{IEDs}}{\left(\mathrm{Correctly}\ \mathrm{detected}+\mathrm{Falsely}\ \mathrm{detected}\ \mathrm{road}\ \mathrm{signs}\ \mathrm{or}\ \mathrm{IEDs}\right)} \)