基于boundar边界提取轮廓，采用曲率算法确定可能为指尖或者指根点的区域，采用该程序确定指尖指根区域。-Contour extraction based on boundar border, using the curvature method to determine the root may refer to point fingers or regions that use the procedure to determine the root area fingertips.

小波包和BP神经网络在齿轮箱故障诊断中的应用，本文对齿 轮箱振动信号应用小波包分解提取故障特征向量，进一步用特征向量训练前向传播BP人工神经网络。-xiaobobao、BP、gearbox fault detection

针对齿轮的故障诊断,提出了一种基于小波特征提取和BP神经网络的诊断系统,利 用小波分解后各频段能量的分布作为特征向量输入神经网络。试验表明该方法能准确地诊断出齿 轮的故障,具有广泛的应用前景 - Aimed at the gear fault diagnosis, a diagnosis systemwhich based on thewavelet for picking up character and BP neural network are proposed, the