FaceRecognizer.py 文件源码

def extractFeatures(self, img):
        "A vector of 2n elements where n is the number of theta angles"
        "and 2 is the number of frequencies under consideration"
        filters =  self.build_filters(img.shape[0],img.shape[1],5,(0.75,1.5),2,1,np.pi/2.0)
        fft_filters = [np.fft.fft2(i) for i in filters]
        img_fft = np.fft.fft2(img)
        a =  img_fft * fft_filters
        s = [np.fft.ifft2(i) for i in a]
        k = [p.real for p in s]
        return k