Computer Graphics & Visual Computing (CGVC) 2023
Permanent URI for this collection
Browse
Browsing Computer Graphics & Visual Computing (CGVC) 2023 by Author "Hulusic, Vedad"
Now showing 1 - 1 of 1
Results Per Page
Sort Options
Item Just Noticeable Difference of Dead Pixels in Monochrome Computer-Generated Holograms(The Eurographics Association, 2023) Lindfield, Nicholas; Carey, Remington; Hulusic, Vedad; Milne, Darran; Tang, Wen; Vangorp, Peter; Hunter, DavidComputer-generated holography (CGH) is a method for replicating scenes that incorporates depth, making them potentially much more realistic than traditional displays. Because CGH uses diffractive optics to generate scenes, holograms are also significantly more robust against dead pixels: while a single dead pixel is often noticeable in traditional displays, in holography much higher numbers are needed before a viewer realises the issue. This work is a pilot study to determine the Just Noticeable Difference of the number of dead pixels of a hologram, i.e., the minimum amount that need to be added before a viewer notices the difference. From these JNDs a quality ruler will be generated, which later work will use to compare the impact of other distortions on the perceived quality of a hologram. Results thus far suggest an addition of 4% dead pixels is required to notice a difference, which is significantly greater than the tolerance observed for traditional displays, where the fault class threshold is less than 0.05%.