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中文摘要：
非真实感绘制（NPR）为传统虚拟现实技术的使用开辟了新的空间。针对传统基于图像的绘制无法满足艺术风格虚拟环境需要的问题，通过将非真实感绘制技术引入虚拟场景构建中，提出了一种基于非真实感绘制的虚拟环境生成方法。该方法首先通过计算结构张量刻画图像局部结构，并采用全变分偏微分方程自适应滤波处理来得到平滑张量场；然后在此基础上采用线积分卷积指导画笔走向来模拟生成线条波动感艺术图像；最后将其融入3维场景来生成可漫游的艺术感虚拟环境。实验结果表明，采用该新算法不仅可以较好地模拟线条波动感艺术图像．而且可实现艺术风格虚拟环境的构建。
英文摘要：
Aesthetic virtual environment cannot be satisfied if using traditional image based rendering. By introducing nonphotorealistic rendering into the Virtual Reality, this paper presents a novel method for aesthetic virtual environment generation. First, structure ＂tensor is calculated to characterize local structure of image. Then, total variation partial difference equation is imposed for smoothing vector field. Based on this we use line integral convolution for guiding the stroke to generate image with fluctuant sense. Last, merging with 3D scene, roam-able aesthetic virtual environment can be generated. Experiment Results show that we can simulate fiuctuant sense image, and thus special style of aesthetic virtual environment can be satisfied using our algorithm.
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