本文主要介绍在PCI图像采集系统的基上，由B超序列图像重建出全方61 t4型心动图。通过梯度算法、曲线拟合算法等图像处理技术获得心动图波形函数，采用自回归谱估计分析获得较为满意的结果。谱分析方法为心脏病的临床诊断提供了一种新的方法。 -This paper mainly introduces the PCI-based image acquisition system, the B-sequence of images from the reconstruction of a full si

procedure for finding chord length. it will help draw a curve for b-spline

本文研究了bezier曲线与b样条曲线间的转换矩阵的生成-This paper studies the transformation matrix between the bezier curve with b-spline curve generated