Question

我正在研究来自github repo的Cloud Vision API的python示例。

我已经设置了项目并使用其密钥激活了服务帐户。我也打电话给gcloud auth并输入了我的凭证。

这是我的代码（源自Vision API文本检测的python示例）：

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'])

这是我收到的错误消息：

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.">

我希望能够将自己的项目用于示例，而不是默认设置（google.com:cloudsdktool）。

Answer 1

下载您创建的凭据并更新GOOGLE_APPLICATION_CREDENTIALS环境变量以指向该文件：

export GOOGLE_APPLICATION_CREDENTIALS=/path/to/your/credentials-key.json

参考：https://github.com/GoogleCloudPlatform/cloud-vision/tree/master/python/text#set-up-to-authenticate-with-your-projects-credentials

Answer 2

导出对我来说不起作用，甚至在代码中设置：

import os
...
os.environ['GOOGLE APPLICATION_CREDENTIALS'] = 'path to servvice account json'
os.environ['GCLOUD_PROJECT'] = 'project id'
...

但是这个修复工作： Google cloud speech api throwing 403 when trying to use it

Google Vision API文本检测Python示例使用项目：＆＃34; google.com：cloudsdktool＆＃34;而不是我自己的项目

2 个答案: