Node.js Document Rectification

The Node.js Document Rectification SDK is a Node binding to Dynamsoft Label Recognizer C++ SDK. It helps developers build Node.js applications for document rectification on Windows and Linux.

License Key

Get a 30-day FREE trial license to activate the SDK.

Pre-requisites

• Node.js

• Platform-specific C/C++ compiler

• node-gyp

  npm i node-gyp -g
  

Supported Platforms

• Windows
• Linux

Quick Start

Set the LICENSE-KEY and specify the image-file in the code below:

const DocRectifier = require('docrectifier4nodejs');
DocRectifier.initLicense('LICENSE-KEY');

var obj = new DocRectifier();
(async function () {
try {
    obj.setParameters(DocRectifier.Template.color);
    let results = await obj.detectFileAsync('image-file');
    let result = results[0];
    result = await obj.normalizeFileAsync('image-file', result['x1'], result['y1'], result['x2'], result['y2'], result['x3'], result['y3'], result['x4'], result['y4']);
    obj.save('test.png');
} catch (error) {
    console.log(error);
}
})();

API

• initLicense(licenseKey)
• setParameters(template)
• getParameters()
• detectFileAsync(imageFile, callback)
• detectBufferAsync(imageBuffer, width, height, stride, callback)
• normalizeFileAsync(imageFile, x1, y1, x2, y2, x3, y3, x4, y4, callback)
• normalizeBufferAsync(imageBuffer, width, height, stride, x1, y1, x2, y2, x3, y3, x4, y4, callback)
• save(imageFile)

Examples

• Command Line

  

• Web