Method and apparatus for generating a composite image from individual compressed images
US6072536A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1997 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Oct 29, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/2624
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A composite image generator for generating a multi-image composite from a plurality of individual compressed images is disclosed. Multi-image composites are generated from static images or from a video stream with significantly reduced computation, reduced latency for video processing and reduced storage requirements. The individual images may be compressed with a JPEG image encoder or another suitable intraframe image encoder, such as those implementing the MPEG-II standard. In the illustrative embodiment, four (4) individual images of equal size, compressed using the JPEG standard, are combined into a multi-image composite with a single individual image in each quadrant of the composite image. Multi-image composites are created without fully decoding each individual compressed image, by partially decoding the individual compressed images and only fully decoding a small portion of each image. Multi-image composites are created from N individual compressed images by initially decoding the data of the N compressed images only enough to identify where each row of 8.times.8 blocks end, so that the image data may be reordered in an appropriate manner. As each 8.times.8 block is detecte…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.