发明名称 |
Acquisition of color calibration charts |
摘要 |
The present disclosure related to acquisition of color calibration charts. In at least some examples herein, an image of a calibration color chart is processed. A lighting condition of the color calibration chart may be automatically determined. |
申请公布号 |
US9165378(B2) |
申请公布日期 |
2015.10.20 |
申请号 |
US201514610316 |
申请日期 |
2015.01.30 |
申请人 |
Hewlett-Packard Development Company, L.P. |
发明人 |
Koh Kok-Wei;Chatow Ehud (Udi);Gottwals Melanie M;Moroney Nathan |
分类号 |
H04N1/60;H04N17/00;G06T7/40;G01J3/52;G01J1/42;H04N5/232;H04N9/64;H04N17/02 |
主分类号 |
H04N1/60 |
代理机构 |
HP Legal Dept |
代理人 |
HP Legal Dept |
主权项 |
1. A method comprising:
automatically determining, by a processor, a lighting condition of an imaged color calibration chart acquired by an imaging device, including comparing multiple measurements of an optical property at selected spots in the imaged color calibration chart; assessing whether the determined lighting condition corresponds to a selected lighting condition that is appropriate for performing color calibration of a printing device based on the acquired color calibration chart, where the selected condition is an appropriate condition if a difference between the multiple contrast measurements is below a selected threshold; and when the color calibration chart has been imaged under the selected lighting condition, performing color calibration of the printing device. |
地址 |
Houston TX US |