python：图片opencv，PIL.Image格式与base64编解码互转

# 二进制打开图片路径 base64 -> opencv

# coding: utf-8
import base64
import numpy as np
import cv2
 
img_file = open('1.jpg','rb')   # 二进制打开图片文件
img_b64encode = base64.b64encode(img_file.read())  # base64编码
img_file.close()  # 文件关闭
img_b64decode = base64.b64decode(img_b64encode)  # base64解码
 
img_array = np.fromstring(img_b64decode,np.uint8) # 转换np序列
img=cv2.imdecode(img_array,cv2.COLOR_BGR2RGB)  # 转换Opencv格式
 
cv2.imshow("img",img)
cv2.waitKey()

# 二进制打开图片路径 base64 -> PIL.Image

# coding: utf-8
# python base64 编解码，转换成Opencv，PIL.Image图片格式
import base64
import io
from PIL import Image
 
img_file = open('1.jpg','rb')   # 二进制打开图片文件
img_b64encode = base64.b64encode(img_file.read())  # base64编码
img_file.close()  # 文件关闭
img_b64decode = base64.b64decode(img_b64encode)  # base64解码
 
image = io.BytesIO(img_b64decode)
img = Image.open(image)
img.show()