Image transmission apparatus, method, recording medium, image output apparatus and image transmission system including pattern determination unit
US8463062B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 1, 2010 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Aug 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A server device compares an image before changing with an image after changing and specifies a difference image that is an image part different between the two images. The server device determines patterns of boxes (rectangles) enclosing the difference image. In image transmission from the server device, the box becomes a macro block being a unit of image compression. The server device specifies from among the patterns of the enclosing box group, an optimal box group that is a pattern of the enclosing box group requiring the shortest response time. The server device sets each of the boxes that make up the specified optimal box group as a unit of macro block, and performs compression coding of the difference image in the set units. The server device transmits partial image information including the compression-coded difference image and the coordinates of the difference image to the client device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.