【摘 要】
:
This paper presents an efficient method to trace secondary rays in depth-of-field (DOF) rendering, which significantly enhances realism. Till now, the effects by secondary rays have been little addres
【出 处】
:
Journal of Computer Science & Technology
论文部分内容阅读
This paper presents an efficient method to trace secondary rays in depth-of-field (DOF) rendering, which significantly enhances realism. Till now, the effects by secondary rays have been little addressed in real-time/interactive DOF rendering, because
其他文献
通过利用整数5/3小波变换,对木材纹理进行多尺度分解,利用特征参数分析了木材纹理频率分布特征,比较了针叶材与阔叶材、径向与弦向切面的木材纹理的差异。实验结果表明,利用整数5/3小波变换,分析各子图像能量值的标准差,筛选出木材纹理最佳分解尺度为2,同时还发现小波能量分布比例和EHL/ELH值可作为木材纹理方向性参数。
目的提出一种简单有效的方法进行冠状动脉X射线造影图像的分割。方法基于Hessian矩阵的多尺度滤波和区域增长等算法,其中多尺度滤波用来增强造影图像中的血管,然后利用多种子点区域增长算法从增强后的图像中提取冠状动脉树。结果该方法对于造影图像中血管状结构非常敏感,能够清晰提取出冠状动脉树中较细小的末梢,并能有效抑制噪声。结论该方法适合于分割冠状动脉造影,适用于冠状动脉造影的精确量化分析。
本文通过整体分析网络行业,从产业与人才的关系到部分高校数码媒体课程的设置和教学要求进行深入的比较研究。阐述了中央美术学院数码媒体专业的教学计划、课程设置、教学要求等具体内容,深入剖析专业基础课程之间的内在关系与规律,阐明了其中的学理关系。认为数码媒体专业基础课程之间存在着具体而必然的构架,为本专业的教学及教学管理提供了可资借鉴的思路和建议。
图形用户界面(GUI,Graphic User Interface)已经大幅度渗入在用户的视觉领域中。图形用户界面是结合了美学、设计学、心理学、人机工程学等多学科背景而诞生的新的设计领域。新的审美理念也在科技和艺术深刻交融的当代诞生。文章通过对比分解方法研究全球最流行的图形用户界面的设计后,再次解读图形界面设计中的审美理念,探寻数字化世界的审美趋势,最终引发对循环设计理念和人性思考。
以采用无线射频识别技术(RFID)的电子标签为代表的物联网应用让我们的生活变得更加智慧。像交通卡、食品安全溯源芯片、一些小区的门禁系统,都采用了电子标签技术。人们还可以把比米粒还小的RFID芯片注射到宠物体内,这样宠物就不会走失了。最近,科学家发明了胶囊内镜,人们把它吞下去后,它会拍摄体内图片并通过无线电波传输出来,供医生做出诊断。
In this paper, we are addressing the exact computation of the Delaunay graph (or quasi-triangulation) and the Voronoi diagram of spheres using Wus algorithm. Our main contributions are first a methodo
This paper proposes a new real-time algorithm to generate visually plausible flames on arbitrary deformable objects.In order to avoid the time-consuming computation of physical fields,the main idea of
An explicit lighting estimation from a single image of Lambertian objects is influenced by two factors: data incompletion and noise contamination. Measurement of lighting consistency purely using the
Labeling connected components and holes and computing the Euler number in a binary image are necessary for image analysis, pattern recognition, and computer (robot) vision, and are usually made indepe
3D caricatures are important attractive elements of the interface in virtual environment such as online game. However, very limited 3D caricatures exist in the real world. Meanwhile, creating 3D caric