Patent · US Expired

Correction of the gaze direction for a videophone

US5499303A · kind A · utility

28Cited by

8References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Eckart Hundt · Haar, DE
Thomas Riegel · Höhenkirchen-Siegertsbrunn, DE
Heinz Schwartzel · Munich, DE
Manfred Ziegler · Neutraubling, DE

Key dates

Filing date	Jul 27, 1993
Grant date	Mar 12, 1996
Priority date	—
Expiry date	Jul 27, 2013

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30201
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method for correcting the gaze direction of persons in a digital image where an angular error between the gaze direction and the camera axis is determined. The pupils of both eyes in the image are then segmented and displaced within the image plane. Areas which have become free are filled in using the color of the eyeball. Any interfering edges produced are attenuated in a subsequent processing step (e.g., by using a low-pass filter). The method is also applicable for a sequence of images over time.

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