Patent · US Active

Method of measuring light using dual cameras

US10609299B1 · kind B1 · utility

1Cited by

1References

15Claims

0Family size

Assignee

Black Sesame International Holding Limited · US

Inventors

Chao Wang · Hubei, CN
Fangwei Cai · Shanghai, CN
Donghui Wu · Fremont, US

Key dates

Filing date	Jan 22, 2019
Grant date	Mar 31, 2020
Priority date	—
Expiry date	Jan 22, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04N23/90
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method of measuring lighting condition using dual cameras, having capturing a reference image, estimating a first minimum exposure target value, capturing a first plurality of minimum exposure value images, determining a first overall minimum exposure value, estimating a first maximum exposure target value, capturing a first plurality of maximum exposure value images, determining a first overall maximum exposure value of the first plurality of associated maximum exposure values and estimating a first dynamic exposure range as encompassing a first range having the first overall minimum exposure value as a first lower bound and the first overall maximum exposure value as a first upper bound.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.