System and method for image auto-focusing
US12328502B2 · kind B2 · utility
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2References
15Claims
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Key dates
| Filing date | Nov 16, 2022 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Dec 31, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30196
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention discloses an active auto-focus tracking system using a time-of-flight (ToF) depth sensor. The ToF sensor serves as a rangefinder and also provides environmental depth information. The active auto-focus system includes a compressive tracking algorithm to track the movement of an object. The active auto-focus tracking system can acquire subject depth information regardless of various lighting conditions, subject positions, and visual patterns. Moreover, the system can perform an improved acquisition of focusing distance in both normal and low-level lighting conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.