基于色度学系统和热转印技术的纺织品图像数字水印技术  

Digital Watermarking of Textile Image Based on Colorimetric System and Thermal Transfer Printing Technology

作　　者：余英 乔月 王彩印 李超 袁碧云 范文宇 YU Ying;QIAO Yue;WANG Cai-yin;LI Chao;YUAN Bi-yun;FAN Wen-yu(School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]大连工业大学轻工与化学工程学院,大连116034

出　　处：《数字印刷》2022年第1期44-52,共9页Digital Printing

基　　金：国家自然科学基金青年科学基金资助项目(No.61802041);辽宁省博士科研启动基金计划项目(No.2020-BS-210)。

摘　　要：纺织品图像可以体现纺织品的个性化价值,然而日益频发的纺织品图像侵权案件给企业和个人带来了巨大的损失,通过数字水印技术实现纺织品图像的版权保护和追踪溯源将是一种有效的解决方法。本研究基于CIELAB色度学系统和热转印技术,提出了一种纺织品图像数字水印技术,该技术基于人眼对高频黄-蓝色度的变化较其他色度的变化具有低敏感性的特点,选择在颜色分量b*中的离散余弦变换(DCT)中频域嵌入水印信息,并使用热转印方式完成数字图像到纺织品上的转移。本研究提出的技术使嵌入水印的数字图像与原图像的PSNR在39dB以上,有效提高了水印的透明度;纺织品上绝大部分的嵌入水印的图像与原彩色图像的PSNR值在30dB以上且提取的水印值都在0.85以上,减少织物纹理对水印信息的影响,解决了水印鲁棒性的问题。Textile images are often used on textiles to reflect the personalized value of textiles. However, the increasingly frequent textile image infringement cases have brought huge losses to the enterprises and individuals.It will be an effective solution to realize the copyright protection and tracing of textile images through digital watermarking technology. In this study, based on CIELAB colorimetry system and heat transfer technology, a digital watermarking technology for textile image was proposed. This technology is based on the fact that human eyes are less sensitive to the change of high-frequency yellow-blue than other chromaticity changes. The watermark information was embedded in the discrete cosine transform(DCT) intermediate frequency domain in color component b*.The technology proposed in this study make the PSNR of the embedded digital image and the original image more than 39 dB, which effectively improves the transparency of the watermark. The PSNR value of most embedded textile images and the original color image is more than 30 dB, and the extracted watermark value is more than 0.85, which reduces the influence of fabric texture on the watermark information and solves the problem of watermark robustness.

关 键 词：CIELAB色度学系统 热转印技术 纺织品图像 数字水印 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]