Quantifying gas leak rates using frame images acquired by a camera
US10852208B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2017 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Sep 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/45
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of quantifying gas leak rate includes receiving image frames acquired with a camera and including a plume from a gas leak source, determining a real-world size that each pixel represents, identifying pixels corresponding to the plume in a first image frame, calculating gas concentration path lengths of the plume for the pixels in the first image frame, calculating, based on the first image frame and a second image frame, an image velocity field of the plume including displacement vectors for the pixels, identifying, within the first image, a closed boundary enclosing the gas leak source of the plume, and calculating a first gas leak rate in the first image frame by calculating a volume rate of the plume flowing across the closed boundary based on the image velocity field, the gas concentration path lengths, and a time interval between the first and the second image frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.