A new metric for LED display brightness assessment

Abstract

Accurate estimation and brightness-calibration of individual LEDs in large display walls is crucial to the delivery of high-quality content. Viewpoint angle and sampling artifacts due to pixelization are key challenges in achieving precise brightness estimation. In this work, we propose a novel metric for assessing brightness accuracy, based on the consistency of brightness estimation between two closely spaced camera viewpoints, which maintain the same angular perspective while altering the camera pixel alignment with the LED grid. Experimental results demonstrate that EBA effectively quantifies the accuracy of any method used to mitigate sampling artifacts.