结合PCA的尺度不变特征变换(SIFT)算法，毕业设计有用，相关分析过程的matlab方法，FIR 底通和带通滤波器和IIR 底通和带通滤波器，包括调制，解调，信噪比计算，本程序的性能已经超过其他算法。-Combined with PCA scale invariant feature transform (SIFT) algorithm, Graduation useful Correlation analysis process matlab method, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Includes the modulation, demodulation, signal to noise ratio calculation, This program has exceeded the performance of other algorithms.