问题
I am working on the python example for Cloud Vision API from github repo.
I have already setup the project and activated the service account with its key. I have also called the gcloud auth
and entered my credentials.
Here is my code (as derived from the python example of Vision API text detection):
import base64
import os
import re
import sys
from googleapiclient import discovery
from googleapiclient import errors
import nltk
from nltk.stem.snowball import EnglishStemmer
from oauth2client.client import GoogleCredentials
import redis
DISCOVERY_URL = 'https://{api}.googleapis.com/$discovery/rest?version={apiVersion}' # noqa
BATCH_SIZE = 10
class VisionApi:
"""Construct and use the Google Vision API service."""
def __init__(self, api_discovery_file='/home/saadq/Dev/Projects/TM-visual-search/credentials-key.json'):
self.credentials = GoogleCredentials.get_application_default()
print self.credentials.to_json()
self.service = discovery.build(
'vision', 'v1', credentials=self.credentials,
discoveryServiceUrl=DISCOVERY_URL)
print DISCOVERY_URL
def detect_text(self, input_filenames, num_retries=3, max_results=6):
"""Uses the Vision API to detect text in the given file.
"""
images = {}
for filename in input_filenames:
with open(filename, 'rb') as image_file:
images[filename] = image_file.read()
batch_request = []
for filename in images:
batch_request.append({
'image': {
'content': base64.b64encode(
images[filename]).decode('UTF-8')
},
'features': [{
'type': 'TEXT_DETECTION',
'maxResults': max_results,
}]
})
request = self.service.images().annotate(
body={'requests': batch_request})
try:
responses = request.execute(num_retries=num_retries)
if 'responses' not in responses:
return {}
text_response = {}
for filename, response in zip(images, responses['responses']):
if 'error' in response:
print("API Error for %s: %s" % (
filename,
response['error']['message']
if 'message' in response['error']
else ''))
continue
if 'textAnnotations' in response:
text_response[filename] = response['textAnnotations']
else:
text_response[filename] = []
return text_response
except errors.HttpError as e:
print("Http Error for %s: %s" % (filename, e))
except KeyError as e2:
print("Key error: %s" % e2)
vision = VisionApi()
print vision.detect_text(['test_article.png'])
This is the error message I am getting:
Http Error for test_article.png: <HttpError 403 when requesting https://vision.googleapis.com/v1/images:annotate?alt=json returned "Google Cloud Vision API has not been used in project google.com:cloudsdktool before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/vision.googleapis.com/overview?project=google.com:cloudsdktool then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.">
I want to be able to use my own project for the example and not the default (google.com:cloudsdktool).
回答1:
Download the credentials you created and update the GOOGLE_APPLICATION_CREDENTIALS environment variable to point to that file:
export GOOGLE_APPLICATION_CREDENTIALS=/path/to/your/credentials-key.json
Reference: https://github.com/GoogleCloudPlatform/cloud-vision/tree/master/python/text#set-up-to-authenticate-with-your-projects-credentials
回答2:
The export didn't work for me, even setting it in the code:
import os
...
os.environ['GOOGLE APPLICATION_CREDENTIALS'] = 'path to servvice account json'
os.environ['GCLOUD_PROJECT'] = 'project id'
...
But this fix worked: Google cloud speech api throwing 403 when trying to use it
来源:https://stackoverflow.com/questions/38048320/google-vision-api-text-detection-python-example-uses-project-google-comclouds