conv_stego20.py 文件源码

def read_pgm(filename):
    img1 = cv2.imread(filename, cv2.CV_LOAD_IMAGE_GRAYSCALE)
    h, w = img1.shape[:2]
    vis0 = np.zeros((h,w), np.float32)
    vis0[:h, :w] = img1
    return vis0


#This method is used to read cover and stego images.
#We consider that stego images can be steganographied with differents keys (in practice this seems to be inefficient...)