如何调用 Microsoft 认知面孔并将图像作为字节 python 和 cognitive_face 传递

Question

嗨，我在这个问题上尝试了同样的事情将字节图像传递给人脸检测库但是有了 cognitive_face 库

faces =CF.face.detect(buf.tobytes(),True,False,attributes='age,gender,emotion')

但是我遇到了一个错误

Traceback (most recent call last): File ".\cam.py", line 80, in faces = CF.face.detect(buf.tobytes(),True,False,attributes='age,gender,headPose,smile>,facialHair,glasses,emotion,hair,makeup,occlusion,accessories,blur,exposure,n>oise') File "Python37\lib\site-packages\cognitive_face\face.py", line 33, in detect headers, data, json = util.parse_image(image) File "Python37\lib\site-packages\cognitive_face\util.py", line 133, in parse_image elif os.path.isfile(image): # When image is a file path. File "Python37\lib\genericpath.py", line 30, in isfile st = os.stat(path) ValueError: stat: embedded null character in path

Answer 1

您正在使用名为 cognitive_face 的旧包，不幸的是，它希望输入参数是文件名或 URL.

幸运的是，新的包名azure-cognitiveservices-vision-face支持流，所以如果你切换过来，你可以做类似下面的事情：

from azure.cognitiveservices.vision.face import FaceClient
from msrest.authentication import CognitiveServicesCredentials
import cv2
import os

face_key = '...' # your API key
face_endpoint = '...' # your endpoint, e.g. 'https://westus.api.cognitive.microsoft.com'

credentials = CognitiveServicesCredentials(face_key)
client = FaceClient(face_endpoint, credentials)

# img is your unencoded (raw) image, from the camera
img = ...

# buf will be the encoded image
ret,buf = cv2.imencode('.jpg', img)

# stream-ify the buffer
stream = io.BytesIO(buf)

# call the Face API
detected_faces = client.face.detect_with_stream(
    stream,
    return_face_id=True,
    return_face_attributes=['age','gender','emotion'])

# access the response, example:
for detected_face in detected_faces:
    print('{} happiness probability={}'.format(
        detected_face.face_id,
        detected_face.face_attributes.emotion.happiness))

如何调用 Microsoft 认知面孔并将图像作为字节 python 和 cognitive_face 传递

how to call Microsoft cognitive face and passing image as bytes python with cognitive_face

opencv

python-3.x

microsoft-cognitive

face-api