Method preprocess

官方samples/mosse.py:127–130

(self, img)

        draw_str(vis, (x1, y2+16), 'PSR: %.2f' % self.psr)

    def preprocess(self, img):
        img = np.log(np.float32(img)+1.0)
        img = (img-img.mean()) / (img.std()+eps)
        return img*self.win

    def correlate(self, img):
        C = cv2.mulSpectrums(cv2.dft(img, flags=cv2.DFT_COMPLEX_OUTPUT), self.H, 0, conjB=True)