Method for detecting a scene change and image editing apparatus
US5493345A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Mar 8, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for detecting a scene change in an input image data composed of a plurality of frames. First, a DC component for each of blocks into which each of the frames is divided is calculated by orthogonal transformation such as discrete cosine transformation. An absolute value of the difference between the DC component of a current frame and the DC component of a frame adjacent to the current frame is calculated for each block of the current frame. The number of blocks for which the absolute value exceeds a first threshold value Is then counted, and a scene change between tile current frame and the adjacent frame is detected when the number of the blocks is higher than a second threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.