Patent · US Active

Key lights direction detection

US10657724B2 · kind B2 · utility

0Cited by

5References

11Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Gael Sourimant · Rennes, FR
Eric HUBERT · Rennes, FR
Jean-Eudes Marvie · Betton, FR

Key dates

Filing date	Dec 20, 2016
Grant date	May 19, 2020
Priority date	—
Expiry date	Mar 9, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/20021
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method and apparatus for detecting a main lighting direction from the input image, which corresponds to a key light. The system is operative to nm on data-parallel architectures allows for incoming light direction estimation in real-time. More particularly, the method and apparatus detect a key, or principal light direction relative to the position/orientation of an acquisition device. It method involves image analysis to find a maximum intensity value, maximal values filtering, and conversion of the input image position to a direction in space.

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