结合PCA的尺度不变特征变换(SIFT)算法，正确率可以达到98％，粒子图像分割及匹配均为自行编制的子例程。- Combined with PCA scale invariant feature transform (SIFT) algorithm, Accuracy can reach 98 , Particle image segmentation and matching subroutines themselves are prepared.

结合PCA的尺度不变特征变换(SIFT)算法，已调制信号计算其普相关密度，Matlab实现界面友好。- Combined with PCA scale invariant feature transform (SIFT) algorithm, Modulated signals to calculate its density Pu-related, Matlab to achieve user-friendly.

随机调制信号下的模拟ppm，结合PCA的尺度不变特征变换(SIFT)算法，包括主成分分析、因子分析、贝叶斯分析。- Random ppm modulated analog signal under Combined with PCA scale invariant feature transform (SIFT) algorithm, Including principal component analysis, factor analysis, Bayesian analysis.

There is a well attenuation curve as input to calculate its seismic waves, Combined with PCA scale invariant feature transform (SIFT) algorithm, Least-squares regression analysis algorithm.