opencv读取和存取图片字节数据

 

 

图片转字节

img = cv2.imread(img_path)
imgbytes = cv2.imencode(".jpg", img)[1].tobytes()

 

字节转图片

#先读取图片为字节，再转图片array 
with open(img_file, "rb") as f:
      img_data = f.read()
      img = cv2.imdecode(np.fromstring(img_data, dtype=np.uint8), 1)

#采用numpy的fromfile
img_path = r"test.jpg"
img = cv2.imdecode(np.fromfile(img_path, dtype=np.uint8), 1)

 

 

读取中文路径

img = cv2.imdecode(np.fromfile(img_file, dtype=np.uint8), 1)

写入中文路径

cv2.imencode('.jpg', new_img)[1].tofile(img_path)