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:
Oct. 02, 2018

Filed:

Oct. 25, 2017
Applicant:

Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;

Inventors:

Katsuhiro Kanamori, Nara, JP;

Jun Ozawa, Nara, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 4/00 (2006.01); G01N 21/21 (2006.01); G02B 27/28 (2006.01); G01N 21/88 (2006.01); A61B 3/14 (2006.01); G01N 21/958 (2006.01);
U.S. Cl.
CPC ...
G01N 21/21 (2013.01); A61B 3/14 (2013.01); G01N 21/8806 (2013.01); G01N 21/958 (2013.01); G02B 27/28 (2013.01); G01N 2021/8848 (2013.01); G06T 2207/20216 (2013.01);
Abstract

Images are formed from first and second polarized images acquired through illumination of the subject with first illumination light beams, and third and fourth polarized images acquired through illumination of the subject with second illumination light beams. Images of a subject are formed from translated first, second, third, and fourth polarized images, acquired from first and second luminous point images. The first bright spots appear on the first polarized image when the first illumination light beams are mirror-reflected off the subject. The second bright spots appear on the fourth polarized image when the second illumination light beams are mirror-reflected off the subject. The image forming circuit forms images of the subject by calculating a difference between a first average image, obtained by averaging the translated first and fourth polarized images, and a second average image, obtained by averaging the translated second and third polarized images.


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