Metrics for Local‐Dimming Artifacts in High‐Dynamic‐Range LCDs

Abstract

Local‐dimming LCDs exhibit qualities and artifacts that cannot be captured by common performance metrics. For example, a local‐dimming display can obtain perfect black levels when the backlight is turned off completely, and the effective measurement of “contrast” will therefore return an infinite value. In this article, robust and meaningful metrics are introduced for the static‐ and motion‐halo artifacts, and good agreement with psychophysical experiments is shown.