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Speos Labs automation APIs 2024 R1

RelativeVisualPerformanceCIE1452002

Last update: 17.07.2025

Description

Calculates the relative visual performance according to the CIE 145:2002 norm as a function of the background luminance, the target luminance and the target size. Returns a value between 0 and 1.

Syntax

object.RelativeVisualPerformanceCIE1452002(short nAge, double dLuminanceBackground, double dLuminanceTarget, double dTargetSize) As Double

  • object: Virtual Human Vision Lab object

  • nAge: observer age (input)

  • dLuminanceBackground: background luminance in cd/m² as double (input)

  • dLuminanceTarget: target luminance in cd/m² (input)

  • dTargetSize: target size in inches (input)

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