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:
Dec. 10, 2013
Filed:
Sep. 26, 2007
Jae-won Moon, Bucheon-si, KR;
Sung-dae Cho, Yongin-si, KR;
Young-min Jeong, Suwon-si, KR;
Jong-man Kim, Ansan-si, KR;
Yun-je OH, Yongin-si, KR;
Young-ho Ha, Daegu, KR;
Chul-hee Lee, Andong-si, KR;
Chang-hwan Son, Daegu, KR;
In-su Jang, Daegu, KR;
Jae-Won Moon, Bucheon-si, KR;
Sung-Dae Cho, Yongin-si, KR;
Young-Min Jeong, Suwon-si, KR;
Jong-Man Kim, Ansan-si, KR;
Yun-Je Oh, Yongin-si, KR;
Young-Ho Ha, Daegu, KR;
Chul-Hee Lee, Andong-si, KR;
Chang-Hwan Son, Daegu, KR;
In-Su Jang, Daegu, KR;
Samsung Electronics Co., Ltd., Yeongtong-gu, Suwon-si, Gyeonggi-do, KR;
Kyungpook National University Industry-Aademic Cooperation Foundation, Buk-gu, Daegu, KR;
Abstract
Disclosed is a method for correcting color in a portable image projector in consideration of an effect of a background color when the portable image projector projects images. The method corrects the effect of the background color to be projected, using color constancy technique, and thereby represents high-quality image which can be projected on a white screen. The method includes the steps of determining if a background color exists on a projection screen using a portable camera, converting the size of a mask image in order to connect a spatial position of an original image and an image photographed by a camera, correcting brightness of the mask image in order to correct non-homogeneity of the brightness of the projected image due to the distribution of different brightness values of the background color, and correcting the background color in order to correct color distortion of the image projected in different colors on the background color. The background color correction step includes the sub-steps of initializing chromaticity of the white screen in advance, and correcting chromaticity using a technique of color constancy of human eyesight.