title: Method for Adapting the Grayscale Standard Display Function to the Aging Eye.
abstract: Perceptual linearity of grayscale images based on a contrast sensitivity model is a widely recognized and used standard for medical imaging visualization. This approach ensures consistency across devices and provides perception of luminance variations in direct relationship to changes in image values. We analyze the effect of aging of the human eye on the precept of linearity and demonstrate that not only the number of just-noticeable differences diminishes for older subjects but also linearity across the range of luminance values is significantly affected. While loss of JNDs is inevitable for a fixed luminance range, our findings suggest possible corrective approaches for maintaining linearity.
authors: Department of Engineering and Architecture, University of Trieste, Trieste, Italy.
authors: Giovanni
authors: G
authors: Ramponi
authors: Division of Imaging, Diagnostics, and Software Reliability, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, Food and Drug Administration, 10903 New Hampshire Ave, Silver Spring, MD, 20993, USA. Aldo.badano@fda.hhs.gov.
authors: Aldo
authors: A
authors: Badano
mesh_terms: D000375:Aging; D015350:Contrast Sensitivity; D005123:Eye; D006801:Humans; D009799:Ocular Physiological Phenomena
keywords: Aging models; Contrast sensitivity; Grayscale visualization; Human visual system