Method and system of adaptably detecting dirt, occlusion and smudge on camera lens and image sensor
US12380548B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2023 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Mar 5, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30168
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of adaptably detecting dirt, occlusion and smudge on camera lens and image sensor includes capturing an image; subjecting original pixels of the image to sampling to result in sampled pixels; excluding outliers of the sampled pixels to result in retained pixels; obtaining an average value of the retained pixels; obtaining a tolerance value according to luminance values of the retained pixels; generating a threshold value for determining dirt, occlusion and smudge on camera lens and image sensor in the image according to the tolerance value and the average value of the retained pixels; and comparing a luminance value of at least one pixel of the image with a corresponding threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.