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Title:
色処理装置およびその方法
Document Type and Number:
Japanese Patent JP4676491
Kind Code:
B2
Abstract:
The present invention generates a color characterization model for performing transformation from a device-dependent color space of a color device to a device-independent color space. A first set of color measurement data is accessed corresponding to actual measurements of the color device, wherein the actual measurements define a measurement range in the device-dependent color space, and wherein the measurement data includes data point pairs, each data point pair having corresponding device-dependent values and device-independent values. Next, a second set of data point pairs is generated based on a predesignated set of device-dependent values outside the measurement range, by extrapolating device-independent values from the first set of color measurement data. The color characterization model is then determined based on both the first set of color measurement data and the generated second set of data point pairs. Because the color characterization model is determined based on actual measurements and extrapolated values, the color characterization model is well-behaved and does not exhibit significant overshooting or undershooting beyond the measurement range.

Inventors:
ティン, シウ-ケイ
Application Number:
JP2007511425A
Publication Date:
April 27, 2011
Filing Date:
April 29, 2005
Export Citation:
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Assignee:
キヤノン株式会社
マイクロソフト コーポレーション
International Classes:
H04N1/46; G06T1/00; G09G5/02; H04N1/56; H04N1/60
Domestic Patent References:
JP2000188697A
JP5506343A
Attorney, Agent or Firm:
大塚 康徳
高柳 司郎
大塚 康弘
木村 秀二