更新时间:2022-01-28 23:41:25
要使用内存缓冲区(StringIO)创建OpenCV图像对象,我们可以使用OpenCV API imdecode,请参阅下面的代码:
To create an OpenCV image object with in memory buffer(StringIO), we can use OpenCV API imdecode, see code below:
import cv2
import numpy as np
from urllib2 import urlopen
from cStringIO import StringIO
def create_opencv_image_from_stringio(img_stream, cv2_img_flag=0):
img_stream.seek(0)
img_array = np.asarray(bytearray(img_stream.read()), dtype=np.uint8)
return cv2.imdecode(img_array, cv2_img_flag)
def create_opencv_image_from_url(url, cv2_img_flag=0):
request = urlopen(url)
img_array = np.asarray(bytearray(request.read()), dtype=np.uint8)
return cv2.imdecode(img_array, cv2_img_flag)