Image vectorization using optimized gradient meshes
Image vectorization using optimized gradient meshes
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DOI：
10.1145/1275808.1276391
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发表时间：
2007-07
期刊：
影响因子：
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通讯作者：
Jian Sun;Lin Liang;Fang Wen;H. Shum
中科院分区：
文献类型：
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作者：
Jian Sun;Lin Liang;Fang Wen;H. Shum
最近，梯度网格作为一种强大的矢量图形表示方法被引入到绘制具有平滑过渡的多色网格对象中。使用Corelde Illustrator和Corel CorelDraw的工具，用户可以手动创建渐变网格，即使是照片般逼真的矢量艺术，可以进一步编辑，风格化和动画。在本文中，我们提出了一个易于使用的交互式工具，称为优化的梯度网格，半自动和快速创建梯度网格从光栅图像。我们通过制定一个能量最小化问题来获得优化的梯度网格。用户还可以交互式地指定一些矢量线来指导网格生成。所得到的优化梯度网格是可编辑和可缩放的网格，否则用户将花费许多小时手动创建。
Recently, gradient meshes have been introduced as a powerful vector graphics representation to draw multicolored mesh objects with smooth transitions. Using tools from Abode Illustrator and Corel CorelDraw, a user can manually create gradient meshes even for photo-realistic vector arts, which can be further edited, stylized and animated. In this paper, we present an easy-to-use interactive tool, called optimized gradient mesh, to semi-automatically and quickly create gradient meshes from a raster image. We obtain the optimized gradient mesh by formulating an energy minimization problem. The user can also interactively specify a few vector lines to guide the mesh generation. The resulting optimized gradient mesh is an editable and scalable mesh that otherwise would have taken many hours for a user to manually create.