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Just Noticeable Difference of dead pixels in monochrome computer-generated holograms.

Lindfield, N., Carey, R., Hulusic, V., Milne, D. and Tang, W., 2023. Just Noticeable Difference of dead pixels in monochrome computer-generated holograms. In: EG UK Computer Graphics & Visual Computing (CGVC), 14-15 September 2023, Penbryn, Wales, UK.

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Computer-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%.

Item Type:Conference or Workshop Item (Paper)
Group:Faculty of Science & Technology
ID Code:38925
Deposited By: Symplectic RT2
Deposited On:19 Jan 2024 12:01
Last Modified:19 Jan 2024 12:01


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