| US 7,545,533 B2 | ||
| Apparatus and method for controlling colors of color image | ||
| Hyun-wook Ok, Yongin-si (Korea, Republic of); Won-hee Choe, Gyeongju-si (Korea, Republic of); Chang-yeong Kim, Yongin-si (Korea, Republic of); and Du-sik Park, Suwon-Si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., Suwon-Si (Korea, Republic of) | ||
| Filed on Nov. 22, 2004, as Appl. No. 10/993,158. | ||
| Claims priority of application No. 10-2003-0082770 (KR), filed on Nov. 20, 2003. | ||
| Prior Publication US 2005/0219574 A1, Oct. 06, 2005 | ||
| Int. Cl. H04N 1/60 (2006.01); G03F 3/10 (2006.01); G06K 9/00 (2006.01); G06K 9/40 (2006.01) | ||
| U.S. Cl. 358—1.9 [358/518; 358/520; 358/527; 382/162; 382/167; 382/264] | 46 Claims |
| 1. A method of converting a color space, comprising:
separating a color signal of a given pixel into a brightness component and a saturation component;
obtaining a boundary value of the saturation component of a color gamut, to which the color signal belongs, in a first color
space using the separated brightness component and saturation components; and
converting the first color space into a second color space in which saturation components and hue components are independently
controlled by normalizing the saturation component of the given pixel using the obtained boundary value.
|