图片缩放

  image=cv2.imread('test.jpg')

  res=cv2.resize(image,(32,32),interpolation=cv2.INTER_CUBIC)

  cv2.imshow('iker',res)

  cv2.imshow('image',image)

  cv2.waitKey(0)

  cv2.destoryAllWindows()

 

mxnet图像转换为opencv的类型，保存

 

img = mx.image.imdecode(s).asnumpy()     # plt.imshow(img)    # plt.title('id=' + str(i) + 'label=' + str(header.label))    # plt.savefig("mxshow/label_" + str(header.label) + '_id_' + str(i) + ".jpg")    # plt.pause(1)    label = str(header.label)    label = label.strip().split(".")[0]    print("all num " + str(all) + " current index "+str(i)+" process "+str(i  * 100.0 / all)+"%")    label_dir = os.path.join(decode_path, label)    if not os.path.isdir(label_dir):  # Create the log directory if it doesn't exist    	label_num += 1    	os.makedirs(label_dir)    X = img    print(X.shape)    X = cv2.cvtColor(X, cv2.COLOR_RGB2BGR)    X = cv2.resize(X,(160,160), interpolation=cv2.INTER_CUBIC)    cv2.imwrite(label_dir + "/label_" + str(label) + '_id_' + str(i) + ".jpg", X)