ROBUSTNESS OF THE MUNSELL SCALE WITH REGARDS TO LUMINANCE CHANGES ON ITS BACKGROUND.

  • Olga Daneyko
  • Tiziano Agostini
  • Daniele Zavagno

Abstract

The constancy of a 16 step achromatic Munsell scale was tested with regards to luminance and hue variations in its background. Participants were asked to find the “colour†of targets on Munsell scales placed on four different backgrounds (each scale-background corresponded to a separate matching session): a white-black and a blue-red chequered background, and two homogenous grey backgrounds which luminance approximated the average luminance of the previous two backgrounds. Results do not support a background averaging hypothesis and indicate that the Munsell scale is affected by background luminance even when the background is articulated as a checkerboard.

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