非真实感绘制技术的研究与实现

发布时间：2018-09-06 10:23

【摘要】：随着计算机硬件技术和软件技术的发展,计算机图形学的发展已经取得了巨大的成功。非真实感绘制技术已经受到了人们越来越多的关注,成为计算机图形学研究的热点。非真实感绘制技术不追求图像的真实性,主要是模拟艺术家的手绘的艺术风格。它是计算机图形学的一个新领域,研究者也不断对各种艺术风格进行尝试,应用的领域也越来越广泛,非真实感绘制技术已经在工业设计、医学领域、影视广告等领域有广泛的应用。由于这些领域应用的推动,也给非真实感的研究和发展提供了新的发展机遇与挑战。本文主要在以下几个方面进行研究: 首先,论文简单的介绍了计算机图形学的定义和发展,回顾了真实感绘制技术和非真实感绘制技术,对真实感绘制技术的发展、特点、缺陷以及非真实感绘制技术的定义、发展、分类和应用进行总结,并比较了它们的异同点。其次,论文介绍了粒子系统的原理以及OpenGL的一些特点与功能,根据水彩画的特征建立了一个粒子系统模型,应用OpenGL的纹理映射技术设计一个水彩画模拟系统。用户可以根据实际需要控制粒子的属性,控制笔刷的方向和速度,系统的实时性和交互性更强。最后,论文提出了一种基于LIC算法生成铅笔画的方法,根据结构矢量场和图像分割后的局部特征,自适应的产生笔划的长度和纹理方向,再利用线性卷积积分方法处理图像。将绘制结果与通过霓虹处理得到的轮廓效果相结合,这样可以模拟铅笔画中不同区域的细节丰富程度,使绘制出的铅笔画更富于变化。
[Abstract]:With the development of computer hardware and software technology, the development of computer graphics has achieved great success. Non-realistic rendering technology has been paid more and more attention, and has become a hot topic in computer graphics research. Non-realistic rendering technology does not seek the authenticity of the image, but mainly simulates the artist's hand-painted artistic style. It is a new field of computer graphics, and researchers are constantly trying on various artistic styles. The fields of application are more and more extensive. Non-realistic rendering technology has been applied in the field of industrial design and medicine. Film and television advertising and other fields have a wide range of applications. Due to the application of these fields, it also provides new opportunities and challenges for the research and development of non-reality. Firstly, this paper introduces the definition and development of computer graphics, reviews the technology of realistic rendering and non-realistic rendering, and develops the technology of realistic rendering. The definition, development, classification and application of features, defects and non-realistic rendering techniques are summarized, and their similarities and differences are compared. Secondly, the paper introduces the principle of particle system and some features and functions of OpenGL. According to the characteristics of watercolor, a particle system model is established and a watercolor simulation system is designed by using OpenGL texture mapping technology. Users can control the properties of particles and the direction and speed of brush according to the actual needs. The real-time and interactivity of the system is stronger. Finally, this paper presents a method to generate pencil strokes based on LIC algorithm. According to the structure vector field and the local feature of image segmentation, the length and texture direction of stroke are generated adaptively, and then the image is processed by linear convolution integral method. By combining the result of drawing with the contour effect obtained by neon processing, the rich degree of detail in different areas of the pencil drawing can be simulated, and the resulting pencil drawing will be more varied.
【学位授予单位】：辽宁师范大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TP391.41

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