python之Google Vision API 文本检测 Python 示例使用项目 : "google.com:cloudsdktool" and not my own project

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 key 激活了服务帐户。我还调用了 gcloud auth 并输入了我的凭据。

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."> 

我希望能够使用我自己的项目作为示例，而不是默认项目 (google.com:cloudsdktool)。

请您参考如下方法:

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 

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