Detect handwritten text in a local file (beta)

Perform handwritten text detection on a local file (for beta launch).

Code sample


Before trying this sample, follow the Node.js setup instructions in the Vision quickstart using client libraries. For more information, see the Vision Node.js API reference documentation.

// Imports the Google Cloud client libraries
const vision = require('@google-cloud/vision').v1p3beta1;
const fs = require('fs');

// Creates a client
const client = new vision.ImageAnnotatorClient();

 * TODO(developer): Uncomment the following line before running the sample.
// const fileName = `/path/to/localImage.png`;

const request = {
  image: {
    content: fs.readFileSync(fileName),
  feature: {
    languageHints: ['en-t-i0-handwrit'],

const [result] = await client.documentTextDetection(request);
const fullTextAnnotation = result.fullTextAnnotation;
console.log(`Full text: ${fullTextAnnotation.text}`);


Before trying this sample, follow the Python setup instructions in the Vision quickstart using client libraries. For more information, see the Vision Python API reference documentation.

def detect_handwritten_ocr(path):
    """Detects handwritten characters in a local image.

    path: The path to the local file.
    from import vision_v1p3beta1 as vision
    client = vision.ImageAnnotatorClient()

    with, 'rb') as image_file:
        content =

    image = vision.Image(content=content)

    # Language hint codes for handwritten OCR:
    # en-t-i0-handwrit, mul-Latn-t-i0-handwrit
    # Note: Use only one language hint code per request for handwritten OCR.
    image_context = vision.ImageContext(

    response = client.document_text_detection(image=image,

    print('Full Text: {}'.format(response.full_text_annotation.text))
    for page in response.full_text_annotation.pages:
        for block in page.blocks:
            print('\nBlock confidence: {}\n'.format(block.confidence))

            for paragraph in block.paragraphs:
                print('Paragraph confidence: {}'.format(

                for word in paragraph.words:
                    word_text = ''.join([
                        symbol.text for symbol in word.symbols
                    print('Word text: {} (confidence: {})'.format(
                        word_text, word.confidence))

                    for symbol in word.symbols:
                        print('\tSymbol: {} (confidence: {})'.format(
                            symbol.text, symbol.confidence))

    if response.error.message:
        raise Exception(
            '{}\nFor more info on error messages, check: '

What's next

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