python给图像加上mask,并提取mask区域实例_Python

python对图像提取mask部分：

代码：

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									#coding:utf-8

									import os

									import cv2

									import numpy as np

									def add_mask2image_binary(images_path, masks_path, masked_path):

									# Add binary masks to images

									  for img_item in os.listdir(images_path):

									    print(img_item)

									    img_path = os.path.join(images_path, img_item)

									    img = cv2.imread(img_path)

									    mask_path = os.path.join(masks_path, img_item[:-4]+'.png') # mask是.png格式的，image是.jpg格式的

									    mask = cv2.imread(mask_path, cv2.IMREAD_GRAYSCALE) # 将彩色mask以二值图像形式读取

									    masked = cv2.add(img, np.zeros(np.shape(img), dtype=np.uint8), mask=mask) #将image的相素值和mask像素值相加得到结果

									    cv2.imwrite(os.path.join(masked_path, img_item), masked)

									images_path = '/home/xinan/cat_test/image/'

									masks_path = '/home/xinan/cat_test/catmask/'

									masked_path = '/home/xinan/cat_test/masked/'

									add_mask2image_binary(images_path, masks_path, masked_path)