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:
Oct. 09, 2018
Filed:
Jul. 24, 2013
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Clarion Co., Ltd., Saitama-shi, Saitama, JP;
Yasuhisa Hayakawa, Yokohama, JP;
Osamu Fukata, Commerce Township, MI (US);
Masayuki Takemura, Hitachi, JP;
Akira Utagawa, Hitachinaka, JP;
Shoji Muramatsu, Hitachi, JP;
Kota Irie, Sagamihara, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Clarion Co., Ltd., Saitama, JP;
Abstract
A water droplet detection device has an image capturing unit and a water droplet detection unit. The image capturing unit has a photographic optical system that an area captures an image of a predetermined area. The water droplet detection unit sets an arbitrary attention point in the captured image, a plurality of first reference points inside an imaginary circle of a predetermined radius having the attention point as a center the imaginary circle, and a plurality of second reference points corresponding to the first reference points outside the imaginary circle. The water droplet detection unit detects edge information between the first reference points and second reference points, and assesses a circularity strength of the edge information to detect a water droplet attached to the photographic optical system. The water droplet detection device can be used with an image conversion unit to form a three-dimensional object detection device.