現今電腦科技的蓬勃發展，使影像複製設備越來越精密，但也導致犯罪者利用影像複製快速之便利，引發出智慧財產權受到威脅等問題。所以本研究之目的為利用不同間距線網嵌入浮水印以保護版權，達到防偽效果。本研究以數位半色調概念建立不同間距線網藏入資訊，採用數位過網演算法形成線網機制，達到數位浮水印效果，調整不同間距，從1~6-pixel間不同組合線網設計測試其加密隱藏效果，另以Human visual system(HVS)進行評估，並透過柱狀透鏡、複印及手機等多重驗證方式進行解密，並加值應用在複習參考書上。

With the rapid growth of information technology, more and more sophisticated machines for image duplication are created to enable image reproduction in an efficient and convenient way. However, it raises a serious threat on intellectual property right. The purpose of this study is to compose digital watermarks with varied line spaces by digital halftoning in an effort to protect copyright and ensure anti-counterfeiting security. To design the line screen watermarks, we finetune varied line spaces between 1 to 6-pixel, and the Human visual system (HVS) is used to evaluate the hiding effect. Then the decrypt can be carried out by lenticular lens, copy machine and smart phone, ultimately leading to the strengthening of anti-counterfeiting mechanism of security documents. The results show that using varied line spaces screen to encrypt messages in documents can provide useful anti-counterfeiting features. The proposed method can be used to develop value-added products.

中文部分
林煜翔(民96)。網點偏移技術與全像科技整合應用之研究。中華印刷科技年報，3，87-100。
吳文和、郭明貴、 李興緯、張冀青(民102)。疊紋技術應用於軍事地圖加密防偽。中正嶺東學報，42(1)，167-174.
黃睿騰(民100)。個性化浮水印嵌入個人化郵票之合成技術。國立臺灣師範大學圖文傳播學系學士論文，台北市。
鄭元皓、黃文信、陳書宇、謝顒丞(民97)。複合式過網技術在柔版印刷之品質特性探討，圖文傳播藝術學報，191-200。
鄭雅文(民102)。改進式混合網點應用於數位浮水印之研究。國立臺灣師範大學圖文傳播學系學士論文，台北市。
蔡朝旭、陳政寰(民93)。立體顯示器技術。台北市 ： 台灣。
蕭佩琪、王希俊、連啟明(民93)。文件底紋之混合網點數位浮水印技術。台北：第三屆數位典藏技術研討會，223-230。

 
英文部分
Alasia, A.V. (1976). U. S. Patent No. 3937565. Process of coding indicia and product produced thereby. Whitestone, NY： U.S. Patent and Trademark Office.
Bender, W., Gruhl, D., Morimoto, N., & Lu, A. (1996). Techniques for data hiding. IBM System Journal, 35(3&4), 313-336.
Escbbach, R., Fan, Z., Knox, K. T., & Marcu, G. (2003). Threshold modulation and stability in error diffusion. IEEE Signal Processing Magazine, 20(4), 39-50.
Floyd, R. W., & Steinberg, L. (1976). An adaptive algorithm for spatial grayscale. Proceedings of Society for Information Display, 17(2), 75-77.
Fu, M. S., & Au, O. C. (2004). Correlation-based watermarking for halftone images. Proceeding of 2004 International Symposium on Circuits and Systems, 2, 21-24.
Fung, Y.H., Chan, Y.H. (2010). Green noise digital halftoning with multiscale error diffusion. IEEE Transactions on Image Processing, 19(7), 1808-1823.
Hecht, D.L. (2001). Printed embedded data graphical user interfaces. IEEE Computer, 34(3), 47-55.
He, Z., Zhang, Y., & Zhan, Z. (2012). Digital halftoning based on K-means clustering. 2012 7th IEEE Conference on In Industrial Electronics and Applications (ICIEA), IEEE. 432-436.
Ikegami, Y., Nishinomiya, Miyauchi, A. (1975). U. S. Patent No. 3922074. Information storage and retrieval. Akio Miyauchi, Tokyo. U.S. Patent and Trademark Office.
Katsavounidis, I. & Kuo, C. C. J. (1997). A multiscale error diffusion technique for digital halftoning. IEEE Transactions on Image Processing, 6(3), 483 -490. doi：10.1109/83.557360
Man, L. C. (2007). U.S. Patent No. 7,307,761. Methods and apparatus for watermarking digitally printed documents. Washington, DC： U.S. Patent and Trademark Office.
Roberts, L. (1962). Picture coding using pseudo-random noise. IRE Transactions on Information Theory, 8(2), 145-154.
Ruanaidh, J. Ó., Dowling, W. J., & Boland, F. M. (1996). Watermarking digital images for copyright protection. IEE Proceedings –Vision on Image Signal Process, 143(4), 250-256.
Sharma, G., & Wang, S. G. (2007). U.S. Patent No. 7,286,682. Show-through watermarking of duplex printed documents. Washington, DC： U.S. Patent and Trademark Office.
Shimada, K. (2004). Microstructural lines involving luminescence. San Jose, The International Society for Optical Engineering Conference, CA, USA. 5310(14), 125-132.
Pappas, T. N., Allebach, J. P., & Neuhoff, D. L. (2003). Model-based digital halftoning, IEEE Signal Processing Magazine, 20(4), 14-27.
Tompkin, J., Heinzle, S., Kautz, J., & Matusik, W. (2013). Content-adaptive lenticular prints. ACM Transactions on Graphics (TOG) - SIGGRAPH 2013 Conference Proceedings, 32(4), 133.
Ulichney, R. A. (1987). Digital Halftoning, Cambridge, MA： MIT Press.
Urruchi Del Pozo, V., Algorri Genaro, J. F., Sánchez-Pena, J. M., Geday, M. A., Arregui, X. Q., & Bennis, N. (2012). Lenticular arrays based on liquid crystals. Opto-Electronics Review, 20(3), 260-266.
van Renesse, R.L. (2005). Optical Document Security. (3rd ed.). London： Artech House. 157.
Wang, H.C., Hsiao, P. C., & Lien, C. M. (2009). U.S. Patent 7,554,699. Method of watermark with hybrid halftone dots. Washington, DC： U.S. Patent and Trademark Office.

網路部分
張真誠(2001)。淺談數位浮水印，取自
http：//msn.iecs.fcu.edu.tw/~ccc/article/20_watermark.pdf
愛之印刷工業(2014)，不同線數產品印刷品質比較，取自
http：//www.aichi-p.co.jp/quality/quality.html
Hongkong post stamps香港郵票策劃及拓展處(2014)，天氣現象郵票，取自http：//www.hongkongpoststamps.hk/chi/newsletter/2014/03/20140310a.htm
U.S. currency. (2013). The redesigned $100 note. Retrieved from
http：//www.newmoney.gov/