Fixing Low Quality Scans & Images

VB C#

using IronOcr;
using System;

var ocrTesseract = new IronTesseract();
using var ocrInput = new OcrInput();
ocrInput.LoadImage(@"images\image.png");

ocrInput.Deskew();
ocrInput.DeNoise();
ocrInput.Despeckle();
ocrInput.EnhanceResolution(225);
ocrInput.Sharpen();
ocrInput.Erode();
ocrInput.Dilate();
ocrInput.Scale(200);
var ocrResult = ocrTesseract.Read(ocrInput);
Console.WriteLine(ocrResult.Text);

Imports IronOcr
Imports System

Private ocrTesseract = New IronTesseract()
Private ocrInput = New OcrInput()
ocrInput.LoadImage("images\image.png")

ocrInput.Deskew()
ocrInput.DeNoise()
ocrInput.Despeckle()
ocrInput.EnhanceResolution(225)
ocrInput.Sharpen()
ocrInput.Erode()
ocrInput.Dilate()
ocrInput.Scale(200)
Dim ocrResult = ocrTesseract.Read(ocrInput)
Console.WriteLine(ocrResult.Text)

Install-Package IronOcr

Fixing Low Quality Scans & Images

The IronTesseract OCR Class provides granular control to C# and .NET developers to add OCR (image and PDF to text) functionality to their application, and also to fine tune performance to their own specific use case.

By setting variables a perfect balance between speed and accuracy can be found though working with real world examples. Settings include: CleanBackgroundNoise, EnhanceContrast, EnhanceResolution, Language, Strategy, RotateAndStraighten, ColorSpace, DetectWhiteTextOnDarkBackgrounds, InputImageType.

This allows for low quality scans to be read which free Tesseract would not be able to handle.