Models and Measurements for Multi-Layer Displays
Abstract
Immediate concerns in multi-layered display development center around a method to describe and measure the trade-off between Moire interference, viewed as rainbow colored bands, and image sharpness. Since displays are only wholly defined in conjunction with an observer, we need to find a map between what is perceived, what is measured and the actual design artifacts. A perceptually weighted metric describing the trade-off forms the central node. If we approach the node from the physical embodiment we need measurements and if we approach from the observer, we need to find out if what they are actually seeing is well described by the metric. A model that describes how changing the distance between a holographic diffuser and how it effects the image was verified experimentally within an order of magnitude, but would benefit from more further experimental comparison. A model was produced that predicts the Moire interference between two image layers which works well. However the metric described needs further investigation. A survey was also completed that showed that was surprising in the sense that viewers appreciate image clarity and will tolerate more Moire interference in the tradeoff described above.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 26, 2006
- Accession Number
- ADA451874
Entities
People
- Gareth Bell