数据增强-翻转、旋转、随机颜色、对比度增强、亮度增强、颜色增强

# imageDir 为原数据集的存放位置
# saveDir  为数据增强后数据的存放位置
###
#
 def flip(root_path,img_name):   #翻转图像
    img = Image.open(os.path.join(root_path, img_name))
    filp_img = img.transpose(Image.FLIP_LEFT_RIGHT)
    filp_img.save(os.path.join(root_path,img_name.split('.')[0] + '_flip.jpg'))
    return filp_img

 def rotation(root_path, img_name):
    img = Image.open(os.path.join(root_path, img_name))
    rotation_img = img.rotate(20) #旋转角度
    rotation_img.save(os.path.join(root_path,img_name.split('.')[0] + '_rotation.jpg'))
    return rotation_img

 def randomColor(root_path, img_name): #随机颜色
     """
    对图像进行颜色抖动
    :param image: PIL的图像image
     :return: 有颜色色差的图像image
     """
     image = Image.open(os.path.join(root_path, img_name))
    random_factor = np.random.randint(0, 31) / 10.  # 随机因子
     color_image = ImageEnhance.Color(image).enhance(random_factor)  # 调整图像的饱和度
     random_factor = np.random.rand