Dataset: "Importance of hue: color discrimination of three-dimensional objects and two-dimensional discs"

This dataset contains observer data and stimulus information for the below publication. Refer to this manuscript for more details.

Laysa Hedjar, Matteo Toscani, and Karl R. Gegenfurtner, "The importance of hue: color discrimination of three-dimensional objects and two-dimensional discs," Journal of the Optical Society of American A 42(5), 1-9 (2025), doi:10.1364/JOSAA.544380

Experimental participant data is available in thresholds.csv: 

• ptID: participant ID number
• JND (DT units): just-noticable difference threshold in detection threshold units
• stimulus type: 3D blob stimulus or 2D disc stimulus
• quadrant: quadrant of DKL color space
• color dimension: dimension of color difference (hue or chroma)
• direction: direction of color difference (increasing or decreasing for chroma, clockwise [cw] or counter-clockwise [ccw] for hue)

Participant data used to scale DKL color space is available in detection_thresholds.csv:

• ptID: participant ID number
• JND (arbitrary DKL units): just-noticable detection threshold
• angle: angle measured in DKL color space (Angle 0 is the positive L-M axis, Angle 90 is the positive S-(L+M) axis)