Google Cloud Vision

First, you must install the Google Cloud SDK, set up and certify your project.

• Install the Google Cloud SDK: https://cloud.google.com/sdk/docs/install

• Set up a project with the gcloud init command: https://cloud.google.com/sdk/gcloud/reference/init

• Create service account key: https://cloud.google.com/docs/authentication/getting-started

  • To grant access to a project, grant the service account the Project > Owner role.

  • To grant a role, find the Select Role list and choose Project > Owner.

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• Set the path to the environment variable GOOGLE_APPLICATION_CREDENTIALS:.

The following code can perform OCR using the Google Cloud Vision API.

python

import os
from google.cloud import vision
from PIL import Image

os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "/path/to/your/service-account-key.json"

def ocr_image(image_path):
    client = vision.ImageAnnotatorClient()

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

    image = vision.Image(content=content)
    response = client.text_detection(image=image)
    texts = response.text_annotations

    if texts:
        return texts[0].description
    else:
        return ""

def ocr_readable_images(images_dir):
    ocr_texts = []
    for image_name in sorted(os.listdir(images_dir)):
        if image_name.startswith("readable_page"):
            image_path = os.path.join(images_dir, image_name)
            ocr_text = ocr_image(image_path)
            ocr_texts.append(ocr_text)
    return ocr_texts

if __name__ == '__main__':
    images_dir = 'output/images'
    ocr_texts = ocr_readable_images(images_dir)
    for i, text in enumerate(ocr_texts):
        print(f'Page {i+1}:\n{text}\n{"="*40}')

- `$ pip install google-cloud-vision` - `PermissionDenied: 403 Cloud Vision API has not been used in project 573408197915 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/vision.googleapis.com/overview?project=... then retry.` -  - `PermissionDenied: 403 This API method requires billing to be enabled. Please enable billing on project` - OK - input -  - output -  - [price](https://cloud.google.com/vision/pricing) - 

• It usually takes a little over a second per request.
• Rate limit is 1800 per minute, so I could do about 30 parallels.

Google Cloud Vision, Cloud Vision

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