Invention Grant
- Patent Title: Adjusting the neutral behavior of a color marking device
- Patent Title (中): 调整彩色标记装置的中性行为
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Application No.: US12429397Application Date: 2009-04-24
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Publication No.: US08194288B2Publication Date: 2012-06-05
- Inventor: Zhenhuan Wen , Martin S. Maltz
- Applicant: Zhenhuan Wen , Martin S. Maltz
- Applicant Address: US CT Norwalk
- Assignee: Xerox Corporation
- Current Assignee: Xerox Corporation
- Current Assignee Address: US CT Norwalk
- Agency: Fleit Gibbons Gutman Bongini & Bianco P.L.
- Agent Philip E. Blair
- Main IPC: H04N1/40
- IPC: H04N1/40

Abstract:
What is disclosed is a novel system and method for adjusting the gray balance of a multifunction color marking device in order to change the device's neutral behavior to a desired level of acceptability. The gray balance aim curve is specified by: L*, L*(aim), a*(aim) and b*(aim), where L*(aim)=f1(L*), a*(aim)=f2(L*), and b*(aim)=f3(L*). After receiving the user-modified gray balance aim curve, the target color device constructs a 3-D N×N×N L*a*b* to L*a*b* pre-LUT to reflect the neutral aim change by transforming a neutral axis input of L*, a*=0 and b*=0 to L*(aim), a*(aim) and b*(aim). Colors further away from the neutral axis are shifted by a lesser amount. The pre-LUT is then concatenated with the current color LUT to produce an updated color LUT which is applied to the device to achieve the desired neutral behavior. The gray balance aim curve can also be based upon a pre-determined user preference.
Public/Granted literature
- US20100271665A1 ADJUSTING THE NEUTRAL BEHAVIOR OF A COLOR MARKING DEVICE Public/Granted day:2010-10-28
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