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.

Date of Patent:
May. 25, 2010

Filed:

Jul. 05, 2007
Applicants:

Ying Zhu, Monmouth Junction, NJ (US);

Gregory Baratoff, Wangen-Feld, DE;

David Jean Pascal Acunzo, Dinan, FR;

Inventors:

Ying Zhu, Monmouth Junction, NJ (US);

Gregory Baratoff, Wangen-Feld, DE;

David Jean Pascal Acunzo, Dinan, FR;

Assignees:

Siemens Corporation, Iselin, NJ (US);

Siemens Aktiengesellschaft, Munich, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/62 (2006.01);
U.S. Cl.
CPC ...
Abstract

Adaptive vision-based vehicle detection methods, taking into account the lighting context of the images are disclosed. The methods categorize the scenes according to their lighting conditions and switch between specialized classifiers for different scene contexts. Four categories of lighting conditions have been identified using a clustering algorithm in the space of image histograms: Daylight, Low Light, Night, and Saturation. Trained classifiers are used for both Daylight and Low Light categories, and a tail-light detector is used for the Night category. Improved detection performance by using the provided context-adaptive methods is demonstrated. A night time detector is also disclosed.


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