线条画风格转换方法及其版权保护的研究

发布时间：2018-01-17 18:18

本文关键词：线条画风格转换方法及其版权保护的研究　出处：《山东师范大学》2007年硕士论文　论文类型：学位论文

【摘要】： 在非真实感绘制领域中,艺术风格的生成与转换一直是一个研究热点。艺术图案(线条画)被广泛的应用于科技文献插图、工业图案设计以及平面广告设计等领域,因此,风格的重用和转换技术尤为重要,它是提高图案设计质量和效率的关键因素,也是制约企业发展的重要因素。迄今为止,人们已经提出了多种风格转换算法,但是这些算法在理论和方法上仍不完善,因此对艺术风格转换方法的进一步研究,不仅有助于算法理论的完善,更有助于方法的推广应用。同时,随着计算机网络技术的发展,各种形式的多媒体作品如音频、视频、动画、图像等都纷纷以网络的形式发布,这使得侵权者能够以低廉的成本复制和传播未经授权的数字图像,这也成为制约企业发展的重要因素。因此本文提出对风格转换后的线条画加水印进行版权保护。本文对线条画风格转换技术进行了较为系统的分析和研究,提出了一种基于区域的线条画风格转换方法。并在分析和总结了国内外二值图像数字水印算法的基础上,提出了一种基于DCT域的二值图像零水印方法。本文主要包括以下一些内容: (1)非真实感绘制的概述和线条画风格转换的基础知识。首先介绍了非真实感绘制的概念、产生背景及其相关研究。其次介绍了手绘线条画的特点,分析了早期计算机生成线条画的方法。 (2)线条画风格转换的预备知识。本文把线条画的风格抽象为线条画的组成元素—笔划的风格,通过对笔划的形状和宽度的规范化表示,对线条画的风格转换方法进行了研究。并介绍了笔划的提取以及笔划的绘制和相似性比较的方法。 (3)提出一种基于区域的线条画风格转换方法。基于样本的线条画风格转换方法可以较好的获得具有样本风格的目标图像,但是,它是把整幅样本图像作为一种风格来进行风格转换的,而有些线条画中却包含有多种风格的线条,不同风格的线条可以给人不同的感觉。本文在分析了以上情况的基础上,提出了一种改进的线条画风格转换方法-基于区域的线条画风格转换的方法,试验证明该方法可以更加灵活的实现线条画的风格转换。 (4)提出一种基于DCT域的二值图像零水印方法。首先介绍了二值图像的特点,并总结了国内外二值图像水印算法,最后根据对一个图像进行各种几何变换时,图像全局DCT系数(中低频)符号基本保持不变的特性,提出了一种提出一种基于DCT域的二值图像零水印方法。仿真试验证明,该方法具有较好的抗几何攻击能力,鲁棒性好,具有较好的实用价值。
[Abstract]:In the field of non-realistic rendering, the generation and transformation of artistic style has been a research hotspot. Art patterns (line painting) are widely used in illustrations of scientific and technological documents. Industrial pattern design and graphic advertising design and other fields, therefore, style reuse and conversion technology is particularly important, it is a key factor to improve the quality and efficiency of pattern design. So far, people have put forward a variety of style conversion algorithms, but these algorithms are still not perfect in theory and method. Therefore, the further research on the method of artistic style transformation is not only helpful to the perfection of the algorithm theory, but also helpful to the popularization and application of the method. At the same time, with the development of computer network technology, various forms of multimedia works such as audio, video, animation, images have been published in the form of network. This allows infringers to copy and distribute unauthorized digital images at low cost. This is also an important factor restricting the development of enterprises, so this paper proposes copyright protection for line painting and watermark after style conversion. This paper makes a systematic analysis and research on the transformation technology of line painting style. A method of line painting style transformation based on region is proposed, and based on the analysis and summary of binary image digital watermarking algorithm at home and abroad. A zero-watermarking method for binary images based on DCT domain is proposed. The main contents of this paper are as follows: First, the concept of non-realistic rendering, the background and related research are introduced. Secondly, the characteristics of hand-drawn line painting are introduced. The method of generating line drawing by computer in the early stage was analyzed. This paper abstracts the style of line painting as the element of line painting-stroke style, through the standardization of the shape and width of strokes. In this paper, the method of style transformation of line drawing is studied, and the methods of stroke extraction, drawing and similarity comparison are introduced. This paper proposes a method of line painting style conversion based on region. The method of line painting style conversion based on sample can get the target image with sample style better, but. It transforms the whole sample image as a style, while some line paintings contain a variety of styles of lines. Different styles of lines can give people different feelings. Based on the analysis of the above situation, this paper puts forward an improved method of line painting style conversion, which is based on the method of regional line painting style conversion. The experiment proves that this method can realize the style conversion of line drawing more flexibly. Firstly, the characteristics of binary image are introduced, and the domestic and foreign binary image watermarking algorithms are summarized. Finally, according to the geometric transformation of an image, the global DCT coefficient (middle and low frequency) symbols of the image remain basically unchanged. A zero-watermarking method for binary images based on DCT domain is proposed. The simulation results show that the method has good robustness and good practical value.
【学位授予单位】：山东师范大学
【学位级别】：硕士
【学位授予年份】：2007
【分类号】：TP391.41

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