CUED Publications database

A digital grayscale generation equipment for image display standardization

Jiang, Y and Liu, Z and Li, Y and Li, J and Lian, Y and Liao, N and Li, Z and Zhao, Z (2020) A digital grayscale generation equipment for image display standardization. Applied Sciences (Switzerland), 10.

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The standardization of grayscale display is essentially significant for image signal communication, transmission, and terminal reading. The key step of this standardization is establishing a traceable equipment of grayscale. As a relative value, grayscale is transferred to two different absolute values to satisfy different traceability methods, including optical density for hardcopy image and luminance for softcopy. For luminance, a generation equipment is designed to build the relationship between luminance and grayscale. In this work, novel equipment is established using digital light processing (DLP) by time-frequency modulation, and the corresponding uncertainty is analyzed. The experiment result shows that this digital equipment builds the relationship between grayscale and luminance in the range of 0.16-4000 cd/m . It enables traceable measurement of grayscale to luminance on this equipment with high accuracy and can provide a standardized reference for the display of grayscale images in the fields of medicine, remote sensing, non-destructive testing, etc. 2

Item Type: Article
Depositing User: Cron Job
Date Deposited: 26 Nov 2020 04:21
Last Modified: 08 Apr 2021 07:14
DOI: 10.3390/app10072297