Google Cloud Visionを使ってPythonでOCRしてみる

$ mkdir python-cloud-vision-sample
$ cd python-cloud-vision-sample
$ pip install --upgrade google-cloud-vision

$ mv ~/Downloads/cloud-vision-sample-8019658d4eb3.json .

import io
import os
from google.cloud import vision
from google.cloud.vision import types
from google.oauth2 import service_account

def detect_text(path):
    """Detects text in the file."""
    from google.cloud import vision
    # client = vision.ImageAnnotatorClient()
    credentials = service_account.Credentials.from_service_account_file('cloud-vision-sample-8019658d4eb3.json')
    client = vision.ImageAnnotatorClient(credentials=credentials)

    with io.open(path, 'rb') as image_file:
        content = image_file.read()

    image = vision.types.Image(content=content)

    response = client.text_detection(image=image)
    texts = response.text_annotations
    print('Texts:')

    for text in texts:
        print('\n"{}"'.format(text.description))

        vertices = (['({},{})'.format(vertex.x, vertex.y)
                    for vertex in text.bounding_poly.vertices])

        print('bounds: {}'.format(','.join(vertices)))


detect_text('g4.png')

$ python main.py

Traceback (most recent call last):
  File "/Users/atsushiharada/.pyenv/versions/python-cloud-vision-sample/lib/python3.7/site-packages/google/api_core/grpc_helpers.py", line 57, in error_remapped_callable
    return callable_(*args, **kwargs)
  File "/Users/atsushiharada/.pyenv/versions/python-cloud-vision-sample/lib/python3.7/site-packages/grpc/_channel.py", line 690, in __call__
    return _end_unary_response_blocking(state, call, False, None)
  File "/Users/atsushiharada/.pyenv/versions/python-cloud-vision-sample/lib/python3.7/site-packages/grpc/_channel.py", line 592, in _end_unary_response_blocking
    raise _Rendezvous(state, None, None, deadline)
grpc._channel._Rendezvous: <_Rendezvous of RPC that terminated with:
	status = StatusCode.PERMISSION_DENIED
	details = "This API method requires billing to be enabled. Please enable billing on project #851590779607 by visiting https://console.developers.google.com/billing/enable?project=851590779607 then retry. If you enabled billing for this project recently, wait a few minutes for the action to propagate to our systems and retry."
	debug_error_string = "{"created":"@1574144877.044046000","description":"Error received from peer ipv4:216.58.197.202:443","file":"src/core/lib/surface/call.cc","file_line":1055,"grpc_message":"This API method requires billing to be enabled. Please enable billing on project #851590779607 by visiting https://console.developers.google.com/billing/enable?project=851590779607 then retry. If you enabled billing for this project recently, wait a few minutes for the action to propagate to our systems and retry.","grpc_status":7}"
>

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "main.py", line 24, in <module>
    response = client.label_detection(image=image)
  File "/Users/atsushiharada/.pyenv/versions/python-cloud-vision-sample/lib/python3.7/site-packages/google/cloud/vision_helpers/decorators.py", line 101, in inner
    response = self.annotate_image(request, retry=retry, timeout=timeout)
  File "/Users/atsushiharada/.pyenv/versions/python-cloud-vision-sample/lib/python3.7/site-packages/google/cloud/vision_helpers/__init__.py", line 72, in annotate_image
    r = self.batch_annotate_images([request], retry=retry, timeout=timeout)
  File "/Users/atsushiharada/.pyenv/versions/python-cloud-vision-sample/lib/python3.7/site-packages/google/cloud/vision_v1/gapic/image_annotator_client.py", line 274, in batch_annotate_images
    request, retry=retry, timeout=timeout, metadata=metadata
  File "/Users/atsushiharada/.pyenv/versions/python-cloud-vision-sample/lib/python3.7/site-packages/google/api_core/gapic_v1/method.py", line 143, in __call__
    return wrapped_func(*args, **kwargs)
  File "/Users/atsushiharada/.pyenv/versions/python-cloud-vision-sample/lib/python3.7/site-packages/google/api_core/grpc_helpers.py", line 59, in error_remapped_callable
    six.raise_from(exceptions.from_grpc_error(exc), exc)
  File "<string>", line 3, in raise_from
google.api_core.exceptions.PermissionDenied: 403 This API method requires billing to be enabled. Please enable billing on project #851590779607 by visiting https://console.developers.google.com/billing/enable?project=851590779607 then retry. If you enabled billing for this project recently, wait a few minutes for the action to propagate to our systems and retry.

$ python main.py
Texts:

"e status
Y bar
E menu
quest
現夫世界で25分間修行しよう
* 25分間集中してなにかに打ち込みましょう。
達成するとMP(Maturity point)を獲得できます。
. MPは主にキャラクターのレベルアップに使用します。
メモは他の人からは見えませんが、経験に変換すると公開されます。
86 37
Пеmо (beta)
process ing
"
bounds: (134,3),(552,3),(552,624),(134,624)

"e"
bounds: (316,3),(325,3),(325,19),(316,19)

"status"
bounds: (327,7),(365,7),(365,17),(327,17)

"Y"
bounds: (404,3),(412,3),(412,18),(404,18)

"bar"
bounds: (415,7),(433,7),(433,16),(415,16)

"E"
bounds: (163,6),(170,6),(170,16),(163,16)

"menu"
bounds: (171,9),(196,10),(196,18),(171,17)

"quest"
bounds: (246,7),(277,7),(277,19),(246,19)

"現"
bounds: (139,103),(150,103),(150,114),(139,114)

"夫"
bounds: (152,102),(162,102),(162,114),(152,114)

"世界"
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"で"
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"25"
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"分間"
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"修行"
bounds: (241,102),(265,102),(265,114),(241,114)

"しよ"
bounds: (268,102),(289,102),(289,114),(268,114)

"う"
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"*"
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"25"
bounds: (166,132),(175,132),(175,151),(166,151)

"分間"
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"集中"
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"し"
bounds: (225,137),(233,137),(233,147),(225,147)

"て"
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"なにか"
bounds: (249,135),(286,135),(286,147),(249,147)

"に"
bounds: (289,137),(291,137),(291,147),(289,147)

"打ち込み"
bounds: (293,135),(350,135),(350,147),(293,147)

"ましょ"
bounds: (352,132),(385,132),(385,151),(352,151)

"う"
bounds: (391,137),(400,137),(400,147),(391,147)

"。"
bounds: (404,143),(409,143),(409,147),(404,147)

"達成"
bounds: (160,157),(183,157),(183,169),(160,169)

"する"
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"と"
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"MP"
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"("
bounds: (243,157),(246,157),(246,171),(243,171)

"Maturity"
bounds: (249,158),(299,158),(299,171),(249,171)

"point"
bounds: (303,154),(336,154),(336,172),(303,172)

")"
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"を"
bounds: (353,157),(362,157),(362,169),(353,169)

"獲得"
bounds: (364,157),(388,157),(388,169),(364,169)

"でき"
bounds: (390,157),(414,157),(414,169),(390,169)

"ます"
bounds: (416,154),(437,154),(437,172),(416,172)

"。"
bounds: (443,165),(447,165),(447,169),(443,169)

"."
bounds: (145,185),(148,185),(148,188),(145,188)

"MP"
bounds: (159,176),(173,176),(173,194),(159,194)

"は"
bounds: (175,176),(185,176),(185,194),(175,194)

"主"
bounds: (187,176),(201,176),(201,194),(187,194)

"に"
bounds: (203,176),(211,176),(211,194),(203,194)

"キャラクター"
bounds: (213,176),(293,176),(293,194),(213,194)

"の"
bounds: (295,176),(299,176),(299,194),(295,194)

"レベル"
bounds: (303,180),(337,180),(337,191),(303,191)

"アップ"
bounds: (339,176),(375,176),(375,194),(339,194)

"に"
bounds: (377,176),(388,176),(388,194),(377,194)

"使用"
bounds: (390,176),(420,176),(420,194),(390,194)

"し"
bounds: (417,181),(425,181),(425,191),(417,191)

"ます"
bounds: (427,176),(451,176),(451,194),(427,194)

"。"
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"メモ"
bounds: (161,202),(183,202),(183,213),(161,213)

"は"
bounds: (185,201),(196,201),(196,213),(185,213)

"他"
bounds: (198,201),(209,201),(209,213),(198,213)

"の"
bounds: (211,204),(222,204),(222,213),(211,213)

"人"
bounds: (224,202),(234,202),(234,213),(224,213)

"から"
bounds: (236,201),(259,201),(259,213),(236,213)

"は"
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"見え"
bounds: (266,201),(298,201),(298,213),(266,213)

"ませ"
bounds: (300,201),(324,201),(324,213),(300,213)

"ん"
bounds: (327,203),(337,203),(337,213),(327,213)

"が"
bounds: (339,201),(350,201),(350,213),(339,213)

"、"
bounds: (353,211),(355,211),(355,213),(353,213)

"経験"
bounds: (358,198),(387,198),(387,216),(358,216)

"に"
bounds: (391,202),(393,202),(393,213),(391,213)

"変換"
bounds: (395,201),(426,201),(426,213),(395,213)

"する"
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"と"
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"公開"
bounds: (467,202),(490,202),(490,213),(467,213)

"さ"
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"れ"
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"ます"
bounds: (518,198),(542,198),(542,216),(518,216)

"。"
bounds: (545,209),(549,209),(549,213),(545,213)

"86"
bounds: (378,367),(457,364),(460,432),(381,435)

"37"
bounds: (473,364),(549,361),(552,429),(476,432)

"Пеmо"
bounds: (134,532),(155,532),(155,539),(134,539)

"(beta)"
bounds: (163,531),(193,531),(193,540),(163,540)

"process"
bounds: (447,616),(484,615),(484,623),(447,624)

"ing"
bounds: (487,614),(501,614),(501,624),(487,624)