Extended just-noticeable difference for ultralow-luminance displays used in diagnostic imaging

Author:

Kawamorita Takushi12,Yasuda Tetsuya3,Ota Takashi3,Iizuka Tatsuya2ORCID,Miyasaka Makiko1,Mamorita Noritaka1,Handa Tomoya12

Affiliation:

1. Kitasato University School of Allied Health Sciences

2. Kitasato University

3. EIZO Corporation

Abstract

This study investigates the just-noticeable difference (JND) in luminance below the 0.050cd/m2 threshold not covered by the DICOM standard in medical imaging displays. A total of 21 healthy young adults were tested using an ultralow-luminance liquid crystal display at a viewing distance of 46 cm. The optotype featured a 4 cycle/deg rectangular wave-like stripe. The average percentage of correct responses for JND indices between −18 and 0 was 70.8%. Using the extended JND based on the Barten model that matches the current JND definition, we confirmed the JND at a very low luminance of 0.0500cd/m2 or less. These findings suggest the feasibility of further refining the gradation differences in medical imaging displays.

Funder

EIZO Corporation

Publisher

Optica Publishing Group

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