公开(公告)号：US5636297A

公开(公告)日：1997-06-03

申请号：US303339

申请日：1994-09-09

申请人： Marlin Eller ,  Christopher B. Leyerle ,  Shishir P. Pardikar

发明人： Marlin Eller ,  Christopher B. Leyerle ,  Shishir P. Pardikar

IPC分类号： G06K9/22 ,  G06T11/40 ,  G06K9/32

CPC分类号： G06K9/222 ,  G06K9/00402 ,  G06T11/40

摘要： A method and system for recognizing a graphic object's shape, line style, and fill pattern in a pen environment are provided. In a preferred embodiment, a user draws a graphic object on an electronic tablet of a computer system. The graphic object comprises a shape attribute, a line style attribute, and a fill pattern attribute. A Recognizer, recognizes the graphic object. The graphic object is made up of a plurality of data points, each data point having an x-coordinate and a y-coordinate. The Recognizer subdivides the plurality of data points into one or more strokes, each stroke representative of a path travelled by the handwriting instrument after the handwriting instrument touches the tablet and before the handwriting instrument is lifted off of the tablet. For each data point in each stroke, the recognizer maps the data point to a normalized data point, then transforms the normalized data point into a transformed data point, and then determines whether the transformed data point is a shape-defining data point or an interior-defining data point. Shape-defining data points are representative of the shape attribute and the line style attribute, while the interior-defining data points are representative of the fill pattern attribute. Based on the coordinates of the transformed data points and the coordinates of the data points, the recognizer determines the attributes. After determining the attributes of the graphic object, the recognizer selects a representation of the graphic object that corresponds to the determined attributes and displays the representation on the electronic tablet.

摘要翻译： 提供了一种用于在笔环境中识别图形对象的形状，线条和填充图案的方法和系统。 在优选实施例中，用户在计算机系统的电子平板电脑上绘制图形对象。 图形对象包括形状属性，线条样式属性和填充图案属性。 识别器，识别图形对象。 图形对象由多个数据点组成，每个数据点具有x坐标和y坐标。 识别器将多个数据点细分成一个或多个笔画，每个笔画代表在手写乐器触摸平板电脑之后以及在手写乐器从平板电脑上提起之前由手写乐器行进的路径。 对于每个笔画中的每个数据点，识别器将数据点映射到归一化数据点，然后将归一化数据点变换为变换数据点，然后确定变换数据点是否是形状定义数据点或内部 定义数据点。 形状定义数据点代表形状属性和线条样式属性，而内部定义数据点代表填充图案属性。 基于变换的数据点的坐标和数据点的坐标，识别器确定属性。 在确定图形对象的属性之后，识别器选择对应于确定的属性的图形对象的表示，并在电子平板电脑上显示该表示。

公开(公告)号：US6097392A

公开(公告)日：2000-08-01

申请号：US942971

申请日：1992-09-10

申请人： Christopher B. Leyerle

发明人： Christopher B. Leyerle

IPC分类号： G06F3/033 ,  G06F3/048 ,  G06F3/00 ,  G06K9/00

CPC分类号： G06F3/04883

摘要： A method and system for altering an attribute of a graphic object in a computer system is provided. An attribute, such as a line style or fill pattern, has a plurality of formats. The computer system includes a handwriting instrument and an electronic tablet. Each attribute of a graphic object has an associated input area on the electronic tablet. The user draws a gesture with the handwriting instrument over a selected one of the input areas. The gesture drawn is indicative of a desired format selected for the attribute and associated with the selected input area. The system recognizes the gesture drawn over the selected input area and then determines the desired format represented by the gesture drawn. The system then changes the format of the attribute associated with the selected input area to the desired format. If the system is not able to recognize the gesture drawn, the user can define the gesture as a custom attribute which will be recognized by the system the next time the gesture is drawn.

摘要翻译： 提供了一种用于改变计算机系统中的图形对象的属性的方法和系统。 诸如线条样式或填充图案的属性具有多种格式。 计算机系统包括手写乐器和电子平板电脑。 图形对象的每个属性在电子平板电脑上具有相关联的输入区域。 用户使用手写乐器在所选输入区域中绘制手势。 绘制的手势指示为该属性选择并与选择的输入区域相关联的期望格式。 该系统识别在所选择的输入区域上画出的手势，然后确定所绘制的姿态所表示的期望格式。 然后，系统将与所选输入区域相关联的属性的格式更改为所需的格式。 如果系统不能识别所绘制的手势，则用户可以将手势定义为在下一次绘制手势时由系统识别的自定义属性。