OCR Tesseract Image DPI

VBC#

using IronOcr;
using System;

var ocrTesseract = new IronTesseract();

using var ocrInput = new OcrInput();
ocrInput.TargetDPI = 300;

ocrInput.LoadImage(@"images\image.png");

var ocrResult = ocrTesseract.Read(ocrInput);
Console.WriteLine(ocrResult.Text);

Imports IronOcr
Imports System

Dim ocrTesseract = New IronTesseract()

Using ocrInput = New OcrInput()
    ocrInput.TargetDPI = 300

    ocrInput.LoadImage("images\image.png")

    Dim ocrResult = ocrTesseract.Read(ocrInput)
    Console.WriteLine(ocrResult.Text)
End Using

PM > Install-Package IronOcr

Install-Package IronOcr

OCR Tesseract Image DPI

The OcrInput class will automatically resolve low-resolution images for IronTesseract.

Although Tesseract generally requires a 300 DPI input, IronTesseract has been tuned to maintain high accuracy on lower-resolution scans. This can improve OCR speed.

Too high a DPI is slow. Too low a DPI causes inaccuracies. If in doubt, do nothing, and Iron Tesseract will preconfigure everything for you.