Masked combinations of video slices for computer display
US5134668A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 8, 1990 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Feb 8, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4055
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system of image processing which utilizes masked video slices to show grey scale images on a bilevel output device. A plurality of video slices of an image are formed by a binary thresholding technique, with each slice displaying the image at different levels of intensity. The same number of video masks are also formed which each comprise a unique pattern of on and off pixels. Each of the video masks is ANDed with a corresponding one of the images slices to create a plurality of masked video slices. The masked video slices are combined to create a binary grey scale image of the original image that can be displayed on a bilevel output device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.