摘要
打印机彩色特性检测是与设备无关色彩管理的一个重要组成部分。针对传统打印机彩色特性检测效率低、自动化程度不高等缺点，提出一种基于3-CCD扫描仪的打印机彩色特性自动检测方法。
本文着重讨论了用3-CCD扫描仪代替分光色度仪的可行性，分析了检测误差产生的原因，对多项式回归校正方法进行了实验研究，在对用原校正靶对扫描仪校正的实验结果进行分析的基础上，改进了校正靶的生成方法，对分区域校正方法进行实验研究，最后给出了实验结果。实验结果表明，改进的校正方法进一步提高了扫描仪校正的精度，且满足了打印机彩色特性自动检测的精度要求，有效地提高了打印机彩色特性检测地可靠性及自动化水平。
Detecting of the printer's characteristics plays an important role in Color Management System (CMS). In viewing of the disadvantages that printer's color characteristics can not be measured automatically and the low efficiency of the measuring method at present,3-CCD-based measuring technique is proposed.
The feasibility of using CCD-scanner substitute spectrophotometer is discussed. The error of colorimetric measurement using CCD-scanner is studied. The calibration methods using polynomial regression are implemented. After analyzing the results of experiment using present scanner-calibration method, an advanced calibration target is acquired. At last the result of the experiments are given. The results indicate that the advanced scanner-calibration method not only improve the precision of scanner-calibration more, but also efficiently improve the reliability and the automation in detecting the printer's color characteristics meeting the demand of precision.
引文
1．阮秋琦，数字图像处理学．北京：电子工业出版社，pp1-pp2．
2.William E. Wallace Maureen C. Stone. Gamut mapping computer generated imagery. SPIE, 1991,Vol. 1460:pp20-pp28.
3．Sybil Ihrig，Emil Ihrig著，李建军 译．印前数字图像处理实用技术．电子工业出版社，1998：pp48-pp49．
4．汤顺青．色度学．北京理工大学出版社，1990：pp1-pp2．
5．[日]大田 登 著，刘中本 译．色彩工学．西安交通大学出版社．1997．
6．曾平、高有行，一种完全过型值点的分段拟合新算法，电子计算机外部设备，1992，增刊，pp11～15
7．贾兴申，与设备无关彩色管理技术研究，1999，pp30-pp34．
8．贾兴申，与设备无关彩色管理技术研究，1999，pp53-pp54．
9.Masato Tsukada. Johji Tajima. New Algorithm for UCR Using Direct Mapping. SPIE, 1993, Vol.2413:pp365-pp374.
10．贾兴申，与设备无关彩色管理技术研究，1999，pp40-pp44．
11.Po-Chieh Hung. Colorimetric Calibration for Scanners and Media. SPIE, 1991 ,Vol. 1448 :pp 164-pp 169.
12.Edward J.Giorgianni & Thomas E.Madden. Digital Color Management. Encoding Solutions.pp27-pp29.
13.Edward J.Giorgianni & Thomas E.Madden. Digital Color Management. Encoding Solutions.pp 105-pp 111.
14.Bernhard Hill.Multispectral Color Technology:A Way towards High Definition Color Image Scanning and Encoding. SPIE.Vol3409.pp2-pp3.1998.
15.Hansjorg Kunzli.How to convert RGB signals to colorimetric and densitometric values?.SPIE.Vol.3963.pp70-pp76.2000.
16.D.Brydges,F.Deppner, H.Kunzli,K.Heuberger, R,D.hersch,Application of a 3-CCD color camera for colorinetric and densitometric measurements. SPIE.Vol.3300.pp292-pp301.1998.
17．王永骥 涂键．神经元网络控制．机械工业出版社，1999：pp8-pp13．
18.Color Scanner Calibration Vol.36,No.2.Mar./Apr. 1992.pp 163-pp 165.
19．[美]Douglas M.bates.[加拿大]Donald G.Walts著 韦博成 万方焕 朱宏图 译．非线性回归分析及其应用．中国统计出版社．1997年11月．pp1-pp33．
20． International Standard. Graphic technology-Prepress digital data exchange-Colour targets for input scanner calibration.
21． Two approachues In Scanner-Printer calibration Colorimetric Space-based Vs."Closed-Loop".SPIE.Vol.2170． pp10-ppl2．
22． Charles E.Rinehart.Design criteria for an input scanner evalutin test object.SPIE.Vol. 1073． pp2-pp8． 1989．
23． Metrication for Color Imaging. Device-independent Color,Color Hardcopy and Graphic Arts IV.San Jose.California.January 1999． SPIE.Vol.3648．