System and method for using a video monitoring system to prevent and manage decubitus ulcers in patients
US8675059B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2010 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Jun 5, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/44
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video monitoring system captures image frames of a patient in various positions. The captured image frames are analyzed by the system for changes in a patient's position or movement, frames in which the system detects one or both of patient movement and repositioning are retained. The system analyzes an area of interest within each image frame that corresponds to an area in the camera's view field with the patient. Sequential image frames are compared for motion, only frames without motion, where the patient is still, are analyzed. Analysis techniques include selecting a plurality of vertical positions in the area of interest, each vertical position corresponding to a part of the patient body indicative of the patient's position, horizontally scanning values along the horizontal pixel row at each vertical position in the area of interest, finding an average value for each vertical position and identifying a patient interval of the horizontal pixel row having pixel values different from the average and a representative horizontal position of the patient interval for each vertical interval. Then, comparing those median horizontal positions from a current image frame to the represen…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.