Detecting application switches in video frames using min and max pooling
US11132556B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2019 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Mar 24, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/49
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An example system includes a processor to receive a number of video frames. The processor is to apply a grid to each video frame of the number of video frames and generate features for each cell in the grid. The processor is to calculate distances between matching regions of two consecutive frames. The processor is to apply max pooling followed by min pooling in horizontal regions of the number of video frames. The processor is to apply max pooling followed by min pooling in vertical regions of the number of video frames. The processor is to detect an application switch in response to detecting both a horizontal change and a vertical change between the two consecutive video frames exceed a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.