Google Vision,aws textract,azureなどのOCR エンジンをラップする「ocrpy」のインストール

Google Vision,aws textract,azureなどのOCR エンジンをラップする「ocrpy」のインストールについて解説しています。

「ocrpy（https://github.com/maxent-ai/ocrpy）」は、Tesseract OCR、Aws Textract、Google Cloud Vision、Azure Computer Vision などのさまざまな OCR エンジンをラップし、クラウドツールやオープンソースライブラリによって提供されるインターフェイスを統合。統合することで、シンプルなインターフェイスを提供している。

■Python

今回のPythonのバージョンは、「3.8.5」を使用しています。（Windows10）（pythonランチャーでの確認）

■ocrpyをインストールする

ocrpyをインストールを行いますが、今回はpipを経由してインストールを行うので、まずWindowsのコマンドプロンプトを起動します。

pip install ocrpy

起動後、上記のコマンドを入力し、Enterキーを押します。

なお、今回は、pythonランチャーを使用しており、Python Version 3.8.5にインストールを行うために、バージョンの切り替えを行います。

py -3.8 -m pip install ocrpy

切り替えるために、上記のコマンドを入力し、Enterキーを押します。

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Created wheel for sentence-transformers: filename=sentence_transformers-2.2.2-py3-none-any.whl size=125925 sha256=a856fc86fff35ca0fc6f6bec3794e16261bb322a71221bf070735a45bbd4d9eb
Stored in directory: c:\users\user_\appdata\local\pip\cache\wheels\5e\6f\8c\d88aec621f3f542d26fac0342bef5e693335d125f4e54aeffe
Building wheel for elastic-apm (pyproject.toml) ... done
Created wheel for elastic-apm: filename=elastic_apm-6.11.0-cp38-cp38-win_amd64.whl size=343119 sha256=36e0c8eeb98ddcf49d9a1ac939256be670446733b6cedb1e9357973d4f3b6c38
Stored in directory: c:\users\user_\appdata\local\pip\cache\wheels\6e\ae\89\fd6dd0c1c8283f3ebf4e44059df5fd025202b8ae1d540ad4eb
Building wheel for python-docx (setup.py) ... done
Created wheel for python-docx: filename=python_docx-0.8.11-py3-none-any.whl size=184489 sha256=bcb3a8c9e0a606cea0f598b79f7025f8271e8e02f776b92b3b6c7308fa926a22
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Building wheel for seqeval (setup.py) ... done
Created wheel for seqeval: filename=seqeval-1.2.2-py3-none-any.whl size=16165 sha256=db0bb7bf6959f5ced9158d9d85caee0083b4b09c9c0887f3c36728c3def2ac22
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Building wheel for tika (setup.py) ... done
Created wheel for tika: filename=tika-1.24-py3-none-any.whl size=32876 sha256=ed1538a09fcfcc59973cad728aa99a1d6d5235d75be7fc72b9baef0e9f24f113
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Building wheel for databricks-cli (setup.py) ... done
Created wheel for databricks-cli: filename=databricks_cli-0.17.1-py3-none-any.whl size=138385 sha256=1b94eda5a9228718d6ce9978709683a30c7074a25f41fa0db2170c4df3b908d2
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Building wheel for docopt (setup.py) ... done
Created wheel for docopt: filename=docopt-0.6.2-py2.py3-none-any.whl size=13706 sha256=a68a154440e86d9c99962139812b018587da9a102562e3c19e8ab2487312d8d8
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Successfully built pytesseract sentence-transformers elastic-apm python-docx seqeval tika databricks-cli docopt
Installing collected packages: tokenizers, sentencepiece, pywin32, pytz, python-dotenv, pyasn1, monotonic, mmh3, docopt, azure-common, websocket-client, waitress, torch, threadpoolctl, tabulate, sqlparse, soupsieve, smmap, rsa, regex, querystring-parser, pyyaml, pyrsistent, pyjwt, pyasn1-modules, protobuf, prometheus-client, pkgutil-resolve-name, pillow, oauthlib, numpy, num2words, networkx, more-itertools, Mako, lxml, langdetect, joblib, jmespath, jarowinkler, isodate, importlib-resources, grpcio, entrypoints, elasticsearch, elastic-apm, dill, cloudpickle, cloudpathlib, cachetools, backoff, torchvision, tika, scipy, requests-oauthlib, rapidfuzz, python-docx, pytesseract, posthog, pdf2image, pandas, opencv-python, nltk, jsonschema, inflect, huggingface-hub, googleapis-common-protos, google-auth, gitdb, docker, databricks-cli, botocore, beautifulsoup4, azure-core, alembic, transformers, scikit-learn, s3transfer, quantulum3, prometheus-flask-exporter, msrest, google-api-core, gitpython, seqeval, sentence-transformers, mlflow, boto3, azure-ai-formrecognizer, google-cloud-vision, farm-haystack, ocrpy
Attempting uninstall: pywin32
Found existing installation: pywin32 225
Uninstalling pywin32-225:
Successfully uninstalled pywin32-225
Attempting uninstall: numpy
Found existing installation: numpy 1.23.1
Uninstalling numpy-1.23.1:
Successfully uninstalled numpy-1.23.1
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
mpire 2.5.0 requires pywin32==225; platform_system == "Windows", but you have pywin32 227 which is incompatible.
Successfully installed Mako-1.2.1 alembic-1.8.1 azure-ai-formrecognizer-3.2.0b2 azure-common-1.1.28 azure-core-1.22.1 backoff-1.11.1 beautifulsoup4-4.9.1 boto3-1.19.7 botocore-1.22.12 cachetools-4.2.4 cloudpathlib-0.9.0 cloudpickle-2.1.0 databricks-cli-0.17.1 dill-0.3.5.1 docker-5.0.3 docopt-0.6.2 elastic-apm-6.11.0 elasticsearch-7.10.1 entrypoints-0.4 farm-haystack-1.6.0 gitdb-4.0.9 gitpython-3.1.27 google-api-core-1.32.0 google-auth-1.35.0 google-cloud-vision-1.0.0 googleapis-common-protos-1.56.4 grpcio-1.47.0 huggingface-hub-0.7.0 importlib-resources-5.9.0 inflect-6.0.0 isodate-0.6.1 jarowinkler-1.2.1 jmespath-0.10.0 joblib-1.1.0 jsonschema-4.9.1 langdetect-1.0.9 lxml-4.9.1 mlflow-1.28.0 mmh3-3.0.0 monotonic-1.6 more-itertools-8.14.0 msrest-0.6.21 networkx-2.8.5 nltk-3.7 num2words-0.5.11 numpy-1.21.1 oauthlib-3.2.0 ocrpy-0.3.9 opencv-python-4.1.2.30 pandas-1.3.3 pdf2image-1.14.0 pillow-9.2.0 pkgutil-resolve-name-1.3.10 posthog-2.1.0 prometheus-client-0.14.1 prometheus-flask-exporter-0.20.3 protobuf-3.20.1 pyasn1-0.4.8 pyasn1-modules-0.2.8 pyjwt-2.4.0 pyrsistent-0.18.1 pytesseract-0.3.6 python-docx-0.8.11 python-dotenv-0.17.1 pytz-2022.2.1 pywin32-227 pyyaml-6.0 quantulum3-0.7.10 querystring-parser-1.2.4 rapidfuzz-2.4.3 regex-2022.7.25 requests-oauthlib-1.3.1 rsa-4.9 s3transfer-0.5.2 scikit-learn-1.1.2 scipy-1.9.0 sentence-transformers-2.2.2 sentencepiece-0.1.97 seqeval-1.2.2 smmap-5.0.0 soupsieve-2.3.2.post1 sqlparse-0.4.2 tabulate-0.8.10 threadpoolctl-3.1.0 tika-1.24 tokenizers-0.12.1 torch-1.10.2 torchvision-0.11.3 transformers-4.20.1 waitress-2.1.2 websocket-client-1.3.3

Enterキーを押すと、インストールが開始され、上記のように「Successfully installed」と表示されます。これが表示されれば、ocrpyが正常にインストールされたことになりますが、今回は「ERROR: pip’s dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.（ERROR: pip の依存性解決は現在インストールされているすべてのパッケージを考慮に入れていません。この動作が、以下のような依存関係の衝突の原因となっています。
）
mpire 2.5.0 requires pywin32==225; platform_system == “Windows”, but you have pywin32 227 which is incompatible.」というエラーが出力された。依存関係の衝突が原因であり、このようなエラーが出力される場合は、仮想環境を構築し、インストールすることを推奨する。