Luminance #
Luminance is the luminous intensity per unit area projected in a given direction measured in cd/m2
The luminance graph consists of three sets of data:
- Measured luminance before applying calibration (purple)
- Calculated target luminance (green)
- Measured luminance after applying calibration (teal)
The number of samples for both sets of measured points can be adjusted in the settings under Measurement Settings
Contrast Response #
JND (Just-Noticeable Difference) #
Just-Noticeable Difference is the luminance difference of a given target under given viewing conditions that the average human observer can just perceive.
Colour Accuracy #
The colour accuracy graph plots the deviation in chromaticity coordinates from the measured value relative to the ideal value. The closer the points fall to the center of the X the more colour accurate the display is.
The graph plots two datasets:
- Measured chromaticity deviation before calibration is applied (purple)
- Measured chromaticity deviation after calibration is applied (teal)
In the below image the colour accuracy setting is disabled. This can be toggled in Settings > Measurement Settings
Colour calibration enabled:
