System and method for analyzing camera performance degradation due to lens abrasion
US11418742B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2020 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Sep 19, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/57
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method includes capturing a first image of an object at a first time using a camera and assigning shade values to a plurality of pixels in a portion of the first image. The object includes a light portion and a dark portion that is darker than the light portion. The method further includes identifying a first mode value of the shade values corresponding to the light portion of the object in the first image, and identifying a second mode value of the shade values corresponding to the dark portion of the object in the first image. The method further includes determining a difference between the first and second mode values, and determining a contrast of the first image based on the difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.