Real-time spatial-based resolution enhancement using shifted superposition
US10009587B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2017 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Aug 14, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0102
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection system for projecting an image with an increased apparent resolution is provided. The projection system includes one or more projectors, a resampler module and a deconvolution module. The resampler module is configured to upsample an incoming high-resolution signal, perform an integer shift operation on a signal, and downsample to two or more low-resolution signals. The deconvolution module is configured to filter the upsampled high-resolution signal using a spatial domain deconvolution operation, the spatial domain deconvolution operation approximating frequency domain optical corrections based on characteristics of the one or more projectors. Preferably, the spatial domain deconvolution operation uses an N×N spatial kernel extracted from a spatial domain approximation of a Wiener filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.