An infinite-resolution grid snapping technique based on fuzzy theory
An infinite-resolution grid snapping technique based on fuzzy theory
复制标题
基于模糊理论的无限分辨率网格捕捉技术
DOI：
10.1016/j.asoc.2020.106112
复制
发表时间：
2020
影响因子：
8.7
通讯作者：
Saga Sato
中科院分区：
文献类型：
--
作者：
Watanabe Ten;Yoshikawa Tomohito;Ito Tomohiko;Miwa Yuto;Shibata Takeshi;Saga Sato
在普通的CAD系统中，用户通过点击和拖动操作，一个接一个地输入几何对象的特征点来输入几何对象。因此，每个特征点都以交互方式捕捉到位，并且几何对象在指定的网格上对齐。在具有笔输入设备的基于草图的CAD系统中，用户简单地绘制系统识别为几何对象的徒手笔划，然后系统必须通过批处理自动将所有特征点捕捉到网格。在这种情况下，用户不容易预先设置网格分辨率，因为适当的分辨率会根据绘图而变化。因此，多分辨率模糊网格捕捉（MFGS）技术已被提出。在MFGS中，根据绘制方式的粗糙度，在多分辨率网格系统中动态选择合适的捕捉分辨率。然而，MFGS中网格分辨率的多样性被限制为有限的数量，并且不能适当地处理该分辨率范围之外的网格捕捉。在本文中，我们提出了无限分辨率模糊网格捕捉（IFGS），其中有一个无限数量的网格分辨率，并通过实验证明，IFGS有效地解决了MFGS的问题。
In ordinary CAD systems with pointing devices, users input geometric objects by inputting their feature points one by one through pointing and dragging operations. Thus, each of the feature points is snapped into place interactively, and the geometric objects are aligned on the specified grid as a result. In sketch-based CAD systems with pen input devices, users simply draw a freehand stroke that the system recognizes as a geometric object, and then the system must automatically snap all of the feature points to the grid by a batch process. In this case, it is not easy for the user to set up the grid resolution in advance, because the appropriate resolution changes according to the drawing. Therefore, a multi-resolution fuzzy grid snapping (MFGS) technique has been proposed. In MFGS, the appropriate snapping resolution is dynamically selected in a multi-resolution grid system according to the roughness of the drawing manner. However, the multiplicity of the grid resolutions in MFGS is limited to a finite number, and grid snapping outside this range of resolutions cannot be appropriately handled. In this paper, we propose infinite-resolution fuzzy grid snapping (IFGS), in which there is an infinite number of grid resolutions, and experimentally demonstrate that IFGS effectively resolves the problems of MFGS.