Liquid level determination
US12018971B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2019 |
| Grant date | Jun 25, 2024 |
| Priority date | — |
| Expiry date | Jan 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30004
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein are a system and method for determining a liquid level in a container based on data extracted from a digital image of the container. An image capture apparatus captures an image of a container used to store liquid reagents used by analytical instruments to test patient samples. A controller receives the captured image and extracts an analysis region based on a container type and applies a gradient filter to the analysis region. A location of a minimum gradient value (i.e., a row index) is determined based on the air-to-liquid boundary of the liquid in the extracted analysis region. A volume module calculates the liquid level in the analysis region by dividing the row index by a length of a gradient column vector and compares the determined liquid level to a threshold analysis region fraction for the container type to determine whether to output an alert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.