Node.js Free Library to Extract Data from Scanned Document
Leading Open Source Node.js Scanned Documents Processing Library allows to Efficiently Load, Read, Process and Extract Text from Scanned Documents inside Node.js Apps.
What is DocumentVision ?
In today's digital age, managing documents efficiently is crucial for organizations of all sizes. With the increasing volume of documents, it can be challenging to maintain their integrity, security, and accessibility. This is where DocumentVision, an open-source library, comes into play. DV is a powerful open source library designed for software developers who need to work with scanned documents. Built on Node.js, it leverages several robust technologies, including Tesseract for Optical Character Recognition (OCR), OpenCV for image processing, and ZXing for barcode reading. This combination allows software developers to create applications that can efficiently handle document management tasks.
DocumentVision is a Node.js library that provides a comprehensive set of tools for reading and managing scanned documents inside Node.js applications. It allows developers to load, read, update, delete or extract text or images from documents, as well as perform advanced operations such as searching, filtering, and sorting with just a couple of lines of code.. The library is designed to be flexible and scalable, making it suitable for a wide range of applications, from small-scale document management systems to large-scale enterprise solutions. For software developers, it abstracts the complexity of dealing with raw document data and allows the creation of custom applications that handle scanned documents, automate workflows, or extract useful information from images.
Getting Started with DocumentVision
To install DocumentVision, you can use npm, the package manager for JavaScript. Please use the following commands for a successful installation.
Install DocumentVision via npm
$ npm install dv Install DocumentVision via GitHub
clone https://github.com/creatale/node-dv.gitImage Loading & Manipulation via Node.js Library
Open source DocumentVision library allows software developers to perform various image processing tasks through its integration with OpenCV. It allows software developers to enhance image quality, adjust dimensions, or even preprocess the image for better OCR results. Software Developers can load, resize, rotate, and adjust images to enhance their quality before processing them. You can also load scanned documents as well images and extract text from it inside Node.js applications. Here is an example that demonstrates, how software developers can resize and rotates images inside Node.js applications.
How to Resize and rotate the image inside Node.js Apps?
const image = new dv.Image('path/to/image.png');
// Resize and rotate the image
image.resize(800, 600).rotate(90).save('path/to/output.png')
Optical Character Recognition (OCR) in Node.js
DocumentVision integrates the Tesseract engine, allowing users to convert text from scanned documents or images into editable formats inside Node.js applications. This feature is essential for document digitization, enabling software developers to extract printed text from image files like PDFs or scanned JPEGs. The following code example shows, how developers can load and extract text from PNG Images inside Node.js environment.
How to Extract Text from PNG Images inside Node.js Apps?
const dv = require('node-dv');
const ocr = new dv.OCR();
ocr.recognize('path/to/image.png', (err, text) => {
if (err) {
console.error('OCR Error:', err);
} else {
console.log('Extracted Text:', text);
}
});
Barcode Detection & Decoding in Node.js
Barcode reading is another essential feature of open source DocumentVision library, made possible by integrating the ZXing barcode scanner. This functionality is useful for managing documents that contain barcodes, such as shipping labels, invoices, or product information sheets. Here is a simple example that demonstrates, how software developers can load barcode image and decode it inside Node.js applications.
How to Load and Decode Barcode Images Inside Node.js Apps?
const barcode = new dv.Barcode();
barcode.decode('path/to/barcode.png', (err, result) => {
if (err) {
console.error('Barcode Error:', err);
} else {
console.log('Decoded Barcode:', result);
}
});
Customizable Workflow
DocumentVision offers a robust and flexible platform for developers to build custom applications that deal with scanned documents The library allows for customization, enabling developers to tailor the processing pipeline to meet their specific requirements. This flexibility can lead to more efficient workflows tailored to specific use cases.