尝试对我的 ML Engine 模型进行在线预测时出现以下错误。关键的“价值观”不正确。(请参阅图像上的错误。) 在此处输入图像描述
我已经使用 RAW 图像数据进行了测试:{"image_bytes":{"b64": base64.b64encode(jpeg_data)}}
& 将数据转换为 numpy 数组。
目前我有以下代码:
from googleapiclient import discovery
import base64
import os
from PIL import Image
import json
import numpy as np
os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "/Users/jacob/Desktop/******"
def predict_json(project, model, instances, version=None):
"""Send json data to a deployed model for prediction.
Args:
project (str): project where the Cloud ML Engine Model is deployed.
model (str): model name.
instances ([Mapping[str: Any]]): Keys should be the names of Tensors
your deployed model expects as inputs. Values should be datatypes
convertible to Tensors, or (potentially nested) lists of datatypes
convertible to tensors.
version: str, version of the model to target.
Returns:
Mapping[str: any]: dictionary of prediction results defined by the
model.
"""
# Create the ML Engine service object.
# To authenticate set the environment variable
# GOOGLE_APPLICATION_CREDENTIALS=<path_to_service_account_file>
service = discovery.build('ml', 'v1')
name = 'projects/{}/models/{}'.format(project, model)
if version is not None:
name += '/versions/{}'.format(version)
response = service.projects().predict(
name=name,
body={'instances': instances}
).execute()
if 'error' in response:
raise RuntimeError(response['error'])
return response['predictions']
savepath = 'upload/11277229_F.jpg'
img = Image.open('test/01011000/11277229_F.jpg')
test = img.resize((299, 299))
test.save(savepath)
img1 = open(savepath, "rb").read()
def load_image(filename):
with open(filename) as f:
return np.array(f.read())
predict_json('image-recognition-25***08', 'm500_200_waug', [{"values": str(base64.b64encode(img1).decode("utf-8")), "key": '87'}], 'v1')