The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2009
Filed:
Mar. 08, 2005
Takafumi Ito, Toyota, JP;
Hiroshi Uesugi, Nagoya, JP;
Osamu Katayama, Nagoya, JP;
Takashi Omori, Sapporo, JP;
Kentaro Mizutani, Sapporo, JP;
Takafumi Ito, Toyota, JP;
Hiroshi Uesugi, Nagoya, JP;
Osamu Katayama, Nagoya, JP;
Takashi Omori, Sapporo, JP;
Kentaro Mizutani, Sapporo, JP;
DENSO CORPORATION, Kariya, JP;
The National University Corporation Hokkaido University, Sapporo-shi, JP;
Abstract
A driver's gaze distribution is detected. Based on the detected distribution, an image corresponding to a driver's visual-field is extracted from images photographed by a front monitor camera and is accumulated. A first driver's gaze probability distribution necessary for steering operation is computed based on the accumulated images, and a second driver's gaze probability distribution that is expected is computed based on visual characteristics within the images. An ideal gaze probability distribution is obtained by adding up the first and the second probability distributions. Presence of a risk is determined when the difference between the driver's gaze and the ideal gaze probability distribution becomes a given threshold. A windshield display or a speaker outputs the determined result.