Device and method for detecting movement of object in images
US12154281B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2022 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Apr 4, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20224
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device for detecting the movement of object in images includes a weight determination circuit, an image blending circuit, and an object movement detection circuit. The weight determination circuit determines multiple weights according to an input image and a background image, each weight corresponding to a pixel position. The image blending circuit blends the input image and the background image based on the weights to generate an updated background image. The object movement detection circuit performs a sum of absolute difference (SAD) calculation, block by block, with the input image and the background image or the updated background image to generate a moving object indication data. The object movement detection circuit generates an object movement signal according to the moving object indication data and at least one threshold. Each block contains multiple pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.