Device, system and method for enhancing one or more of high contrast regions and text regions in projected images
US11109005B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2020 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Mar 25, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20212
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device, system and method for enhancing high-contrast and text regions in projected images is provided. A device applies, to an input image: a high-contrast sharpening filter sharpening high-contrast regions producing a high-contrast sharpened image; and a background sharpening filter sharpening other regions of the input producing a background sharpened image, the background sharpening filter applying less sharpening than the high-contrast sharpening filter. The device: determines, using high-contrast and motion detectors, the input image and/or previous images, masks selecting stationary high-contrast regions of the input image; determines, using the masks, a background mask selecting remaining regions of the input image; applies the masks to the high-contrast sharpened image selecting stationary high-contrast regions therefrom; applies the background mask to the background sharpened image selecting the remaining regions therefrom; combines the stationary high-contrast and remaining regions to produce a combined enhanced image; and controls a projector to project the combined enhanced image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.