公开(公告)号：US4939646A

公开(公告)日：1990-07-03

申请号：US192586

申请日：1988-05-09

申请人： Jacques R. Essinger ,  Michael L. Rhodes ,  Dennis C. Coyle

发明人： Jacques R. Essinger ,  Michael L. Rhodes ,  Dennis C. Coyle

IPC分类号： G06F17/17 ,  G06T11/00

CPC分类号： G06F17/175 ,  G06T11/203 ,  Y10S378/901

摘要： A method for representing digitized scanned image data obtained by a non-intrusive cross-sectional image generating device. By representing an original set of user-input data points in polar coordinates, such that all of the points lie in the upper two quadrants of the coordinate system, a cubic spline algorithm can be applied once to generate a series of polynomial functions that describe a curve connecting all of the input data points. The method also uses the calculated cubic spline coefficients for the initial curve to determine intermediate data points at each of which a uniform length perpendicular is constructed. By traversing each perpendicular a desired length, new data points equidistant from the initial curve are calculated, resulting in additional curves equidistant from the initial curve. Any of the curve representations generated can then be used to select pixels from the scanned image data to display a reformatted view of the original data.

摘要翻译： 一种用于表示由非侵入式横截面图像生成装置获得的数字化扫描图像数据的方法。 通过在极坐标中表示原始的一组用户输入数据点，使得所有点位于坐标系的上两个象限中，可以应用一次三次样条算法来生成一系列多项式函数，其描述一个 曲线连接所有输入数据点。 该方法还使用计算的三次样条系数作为初始曲线，以确定在其中构造均匀长度垂直的每个中间数据点。 通过将每个垂直线穿过所需长度，计算与初始曲线等距的新数据点，导致与初始曲线等距的附加曲线。 然后可以使用生成的任何曲线表示来从扫描图像数据中选择像素以显示原始数据的重新格式化视图。