| 发明名称 |
Color grading apparatus and methods |
| 摘要 |
A method for color grading input video data for display on a target display comprises obtaining target display metadata indicative of a capability of the target display, obtaining input video data metadata indicative of image characteristics of the input video data, automatically determining initial values for parameters of a parameterized sigmoidal transfer function, at least one of the initial values based at least in part on at least one of the target display metadata and the input video data metadata and mapping the input video data to color-graded video data according to the parameterized transfer function specified using the initial values. |
| 申请公布号 |
US9024961(B2) |
申请公布日期 |
2015.05.05 |
| 申请号 |
US201213718896 |
申请日期 |
2012.12.18 |
| 申请人 |
Dolby Laboratories Licensing Corporation |
发明人 |
Longhurst Peter W.;Messmer Neil W.;Margerm Steve;Atkins Robin |
| 分类号 |
G09G5/00;G09G5/02;G09G5/36;G09G3/04;H04N5/202;H04N5/00;H04N5/21;H04N9/64;H04N5/52;H04N1/46;G03F3/08;G06K9/40;H04N9/68;H04N9/73;G06K9/00 |
主分类号 |
G09G5/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for color grading input video data for display on a target display, the method comprising:
obtaining target display metadata indicative of a capability of the target display; obtaining input video data metadata indicative of image characteristics of the input video data; automatically determining initial values for parameters of a parameterized sigmoidal transfer function, at least one of the initial values based at least in part on at least one of the target display metadata and the input video data metadata; and, mapping the input video data to color-graded video data according to the parameterized transfer function specified using the initial values. |
| 地址 |
San Francisco CA US |
