Poisson Vector Graphics (PVG)

Poisson Vector Graphics (PVG)
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泊松矢量图形 (PVG)

DOI:
10.1109/tvcg.2018.2867478
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发表时间:
2020-02
影响因子:
5.2
通讯作者:
He Ying
He Ying
中科院分区:
计算机科学1区
文献类型:
--
作者:
Hou Fei;Sun Qian;Fang Zheng;Liu Yong-Jin;Hu Shi-Min;Qin Hong;Hao Aimin;He Ying

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本文提出了泊松矢量图形(PVG),流行的扩散曲线(DC)的扩展,生成平滑阴影的图像。配备了两种新类型的基元,称为泊松曲线和泊松区域,PVG可以很容易地产生真实感效果,如镜面高光,核心阴影,半透明和光晕。在PVG框架内,用户将颜色指定为扩散曲线的Dirichlet边界条件,并通过偏移颜色的拉普拉斯算子来控制色调,其中两种控制都简单地通过鼠标单击和滑块拖动来完成。PVG区别于其他基于扩散的矢量图形有3个独特的功能:1)明确的颜色和色调分离,遵循基本的绘图原则,便于编辑; 2)本地支持无缝克隆,PC和PR可以自动适应目标背景; 3)允许相交图元(除了DC-DC相交),以便用户可以创建图层。通过广泛的实验和初步的用户研究,我们证明了PVG是一个简单而强大的创作工具,可以从头开始产生照片般逼真的矢量图形。
This paper presents Poisson vector graphics (PVG), an extension of the popular diffusion curves (DC), for generating smooth-shaded images. Armed with two new types of primitives, called Poisson curves and Poisson regions, PVG can easily produce photorealistic effects such as specular highlights, core shadows, translucency and halos. Within the PVG framework, the users specify color as the Dirichlet boundary condition of diffusion curves and control tone by offsetting the Laplacian of colors, where both controls are simply done by mouse click and slider dragging. PVG distinguishes itself from other diffusion based vector graphics for 3 unique features: 1) explicit separation of colors and tones, which follows the basic drawing principle and eases editing; 2) native support of seamless cloning in the sense that PCs and PRs can automatically fit into the target background; and 3) allowed intersecting primitives (except for DC-DC intersection) so that users can create layers. Through extensive experiments and a preliminary user study, we demonstrate that PVG is a simple yet powerful authoring tool that can produce photo-realistic vector graphics from scratch.
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发表时间: 2010-04
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