Image frame fusion by velocity estimation using region merging
US6452637B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1999 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Feb 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/537
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A process for obtaining information from at least two image frames of a sequence of frames, each of the frames including an array of pixels, each pixel having an amplitude, one of the two frames being designated as a reference frame and the other being a non-reference frame, the process including:(1) defining a set of velocities with which the motion of pixels between the two frames may be modeled;dividing each one of the two frames into plural regions, each region in each one of the two frames corresponding to a region in the other of the two frames;(2) determining an error for each one of at least some of the velocities by carrying out the following steps for each one of the regions and for each union of pairs of the regions:(A) mapping each pixel of the non-reference frame into the reference frame in accordance with the one velocity,(B) computing an error amount which is a function of a difference in pixel amplitude attributable to the mapping;(C) designating a minimum one of the error amounts computed for the velocities as the error for the one velocity, whereby a respective error is associated with each of the regions and with each union of pairs of the regions without regard …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.