精品文档---下载后可任意编辑一种面对文本图像的地纹数字水印讨论的开题报告【摘要】数字水印技术是一种将信息嵌入至数字内容中的保护方法。在文本图像保护方面，地纹数字水印技术被广泛应用。本文针对文本图像保护与识别存在的困难，提出面对文本图像的地纹数字水印讨论，尝试解决文本图像保护及识别问题，以确保文本图像信息的安全性及真实性。首先，对地纹数字水印技术的理论进行了讨论，包括数字水印的基本原理、嵌入和提取过程、鲁棒性及安全性等方面，以及当前国内外讨论进展。然后，针对文本图像保护及识别问题，提出了一种基于钢笔画效果和几何形状结合的地纹数字水印方案。通过在文本图像中嵌入特定的数字信息，实现对文本图像的保护，并为文本图像提供了唯一性标识，从而实现识别。最后，在 MATLAB 环境下对该方法进行实现和验证，结果表明该方法在文本图像保护和识别方面具有很高的鲁棒性和安全性。关键词：数字水印；地纹；文本图像；保护；识别【Abstract】Digital watermarking technology is a method of embedding information into digital content for protection. In the protection of text images, the geological watermarking technology is widely used. In view of the difficulties in text image protection and recognition, this paper proposes a research on geological watermarking for text images to solve the problem of text image protection and recognition and ensure the safety and authenticity of text image information.Firstly, the theory of geological watermarking technology was studied, including the basic principle, embedding and extraction process, robustness and security, and the current research progress at home and abroad.Then, a geological watermarking scheme based on the combination of pen drawing effect and geometric shape was proposed to solve the problem of text image protection and recognition. By embedding specific digital information in the text image, the protection of the text image is realized, and a 精品文档---下载后可任意编辑unique identification is provided for the text image for identification.Finally, the method was implemented and verified in the MATLAB environment, and the results showed that the method has high robustness and security in text image protection and recognition.Keywords: digital watermark; geology; text image; protection; recognition
