Automatic alignment of video frames for image processing
US8009932B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2007 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Jun 29, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10048
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The provided is a method that can automatically align image frames in recorded video clips. Individual frames in video may shift and rotate due to shaking or vibration of a video camera. Unaligned frames make some imaging processing techniques difficult or infeasible. One example of image processing techniques is to isolate, recognize, and/or quantitatively analyze vapor plume images captured by an Infrared (IR) camera. Such techniques have a great potential to be used to automatically detect volatile organic compounds (VOC) leaked from process equipment at refineries and chemical plants. This invention is a technique for various subsequent image processing techniques. The invention uses spatially based Fast Fourier Transforms (FFT) to determine amount of shift, rotation, and scaling to align image frames, and uses a digital filtering technique to improve the alignment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.