采用查找表的超四色打印光谱色彩校正方法

doi:10.3969/j.issn.1001-2400.2010.01.008

J4 ›› 2010, Vol. 37 ›› Issue (1): 41-48.doi: 10.3969/j.issn.1001-2400.2010.01.008

采用查找表的超四色打印光谱色彩校正方法

王莹¹;曾平^1,2;何秀芳¹;罗雪梅¹

(1. 西安电子科技大学计算机外部设备研究所，陕西西安 710071；
2. 西安石油大学计算机学院，陕西西安 710065)

收稿日期:2009-06-08 出版日期:2010-02-20 发布日期:2010-03-29
通讯作者: 王莹
作者简介:王莹(1977-)，女，西安电子科技大学博士研究生，E-mail: mailwangying@mail.xidian.edu.cn．
基金资助:
国家部委预研基金资助项目(9140A16050109DZ01);陕西省教育厅科研计划资助项目(09JK701)

Spectral color calibration method for the multi-ink printer using the look-up table

WANG Ying¹;ZENG Ping^1,2;HE Xiu-fang¹;LUO Xue-mei¹

(1. Research Inst. of Computer Peripherals, Xidian Univ., Xi'an 710071， China;
2. School of Computer Science, Xi'an Shiyou Univ., Xi'an 710065， China)

Received:2009-06-08 Online:2010-02-20 Published:2010-03-29
Contact: WANG Ying

摘要/Abstract

摘要：

为解决多光谱图像打印输出时的色彩校正问题，提出一种采用查找表进行打印光谱色彩校正的方法．首先在超四色打印机色空间规则采样并测量采样点的光谱值，将光谱值变换至一个低维空间，建立正向查找表;然后在低维光谱空间中采样，运用非线性优化技术确定采样点在打印机色空间中的映射点，根据采样点确定优化参数来提高优化精度和时间效率，建立反向查找表; 最后采用高维线性插值方法，在正向和反向查找表中插值以实现打印光谱色彩校正．实验结果表明，在相同的仿真环境下，新方法与常用的建立光谱打印色彩校正模型法相比，在正向校正的色度精度和光谱精度上分别提高了40％和44％，在反向校正精度上分别提高了51％及41％，且反向校正的时间效率提高了96％．

关键词: 光谱色彩校正, 超四色打印, 查找表, 非线性优化, 高维线性插值, 多光谱图像

Abstract:

To achieve the color calibration in the multi-spectral image print output, a new calibration method for the multi-ink printer is proposed. By sampling in the multi-ink print color space, measuring the spectral reflectance of the samples and then transforming the reflectance data to a low-dimensional spectral space, a forward look-up table is established firstly. Then by sampling in the low-dimensional spectral space and using the nonlinear optimization to determine the mapping points of the samples in the printer color space, a backward look-up table is created. Meanwhile, optimization parameters are determined according to the samples, which improves the optimization accuracy and shortens the computing time. Finally a multi-linear interpolation method is carried out on the forward and backward look-up table to achieve the spectral color calibration of the multi-ink printer. Experiments show that compared with the spectral color calibration model methods, the new method increases the colorimetric and spectral precision by 40％ and 44％, respectively, in forward calibration, and 51％ and 41％ in backward calibration. The time efficiency is improved by 96％ in backward calibration.

Key words: spectral color calibration, multi-ink print, look-up table, nonlinear optimization, multi-linear interpolation, multi spectral image

王莹;曾平;何秀芳;罗雪梅. 采用查找表的超四色打印光谱色彩校正方法[J]. J4, 2010, 37(1): 41-48.

WANG Ying;ZENG Ping;HE Xiu-fang;LUO Xue-mei. Spectral color calibration method for the multi-ink printer using the look-up table[J]. J4, 2010, 37(1): 41-48.

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采用查找表的超四色打印光谱色彩校正方法

Spectral color calibration method for the multi-ink printer using the look-up table

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