Constructing and reconstructing characters, words, and sentences by synthesizing writing motions
Constructing and reconstructing characters, words, and sentences by synthesizing writing motions
复制标题
DOI：
10.1109/tsmca.2005.851344
复制
发表时间：
2006-07
期刊：
影响因子：
--
通讯作者：
H. Fujioka;H. Kano;Hiroaki Nakata;H. Shinoda
中科院分区：
文献类型：
--
作者：
H. Fujioka;H. Kano;Hiroaki Nakata;H. Shinoda
在本文中，我们研究了生成和操作字符、单词和句子的问题。首先，获取字符作为虚拟书写平面和虚拟书写装置之间的横截面积轨迹，所述虚拟书写装置由在三维空间中运动的圆锥建模。这样的运动被设计为加权和时移B-样条函数的和。称为控制点的权重向量序列定义了所谓的控制多边形，并表示运动，从而表示角色。然后，以这种方式设计的字符或控制多边形以系统的方式连接以产生单词和句子，这些单词和句子再次被表示为控制多边形，或者小的或者大的。然后，我们考虑将汉字或单词的字体转换为日本书法中省略的行文风格。这样的方案是通过将问题表示为最优函数逼近问题来开发的，该最优函数逼近问题最小化书写运动的输入能量。最后，给出了一个草书的设计实例，并将该方法应用于机器人手写。因此，本文提供了一个统一的框架，用于以系统的和理论上合理的方式生成和操作复杂的平面模式的字符、单词和句子。尽管我们描述了使用日文假名字符的方法，但是构造和重构字符和字符串的思想和方法是通用的，并且不仅限于日文字符
In this paper, we investigate the problem of generating and manipulating characters, words, and sentences. First, characters are obtained as the trace of the cross-sectional area between a virtual writing plane and a virtual writing device modeled by a circular cone, which is moving in a three-dimensional space. Such a motion is designed as a sum of weighted and time-shifted B-spline functions. A sequence of weight vectors called control points defines the so-called control polygon, and represents the motion and hence, a character. Characters or control polygons designed in this way are then connected in a systematic way to yield words and sentences, which again are represented as a control polygon, either small or large. Then, we consider transforming the typeface of characters or words to the omitted running styles as seen in Japanese calligraphy. Such a scheme is developed by formulating the problem as an optimal function-approximation problem, which minimizes an input energy of writing motions. Finally, a design example of cursive words is included and also the method is implemented for robotic handwriting. Thus, the paper provides a unified framework for generating and manipulating characters, words, and sentences, which are complex planar patterns, in a systematic as well as theoretically sound fashion. Although we describe the method using Japanese Kana characters, the idea and methodology for constructing and reconstructing characters and character strings is general and is not only limited to Japanese characters