How to Fix Image Colors for Reading

using IronOcr; // Using the IronOCR library for Optical Character Recognition (OCR)

// Instantiate IronTesseract, which provides the OCR functionality.
var ocrTesseract = new IronTesseract();

// Create an OcrInput object with the specified image file.
// The 'using' statement ensures that the resources are automatically disposed of when done.
using (var imageInput = new OcrInput("sample.jpg"))
{
    // Apply a binarization effect to the image to enhance OCR accuracy.
    imageInput.Binarize(); // Binarization improves contrast and can lead to better OCR results.

    // Save the binarized version of the image. Specify a filename to store the modified image.
    imageInput.SaveAsImages("binarize.jpg"); // The processed image is saved as "binarize.jpg".
}

Imports IronOcr ' Using the IronOCR library for Optical Character Recognition (OCR)

' Instantiate IronTesseract, which provides the OCR functionality.
Private ocrTesseract = New IronTesseract()

' Create an OcrInput object with the specified image file.
' The 'using' statement ensures that the resources are automatically disposed of when done.
Using imageInput = New OcrInput("sample.jpg")
	' Apply a binarization effect to the image to enhance OCR accuracy.
	imageInput.Binarize() ' Binarization improves contrast and can lead to better OCR results.

	' Save the binarized version of the image. Specify a filename to store the modified image.
	imageInput.SaveAsImages("binarize.jpg") ' The processed image is saved as "binarize.jpg".
End Using

// Ensure the necessary namespaces are included for image processing.
using System;
using System.Drawing;

// This extension method applies a grayscale effect to an image.
public static class ImageExtensions
{
    /// <summary>
    /// Converts an input image to grayscale.
    /// </summary>
    /// <param name="imageInput">An instance of an Image object representing the image to be converted.</param>
    /// <exception cref="ArgumentNullException">Thrown when the image input is null.</exception>
    public static void ToGrayScale(this Bitmap imageInput)
    {
        // Check if the imageInput is null to prevent null reference exceptions
        if (imageInput == null)
        {
            throw new ArgumentNullException(nameof(imageInput), "The image cannot be null.");
        }

        // Loop through each pixel in the image and apply the grayscale effect
        for (int x = 0; x < imageInput.Width; x++)
        {
            for (int y = 0; y < imageInput.Height; y++)
            {
                // Get the pixel color at (x, y)
                Color pixelColor = imageInput.GetPixel(x, y);

                // Calculate the luminance using a common formula that considers human perception
                // This formula takes into account the different contributions to brightness from R, G, B
                int grayScaleValue = (int)(pixelColor.R * 0.3 + pixelColor.G * 0.59 + pixelColor.B * 0.11);

                // Create a new grayscale color with the same alpha value
                Color grayColor = Color.FromArgb(pixelColor.A, grayScaleValue, grayScaleValue, grayScaleValue);

                // Set the new grayscale color to the pixel
                imageInput.SetPixel(x, y, grayColor);
            }
        }
    }
}

// Note: This code assumes the existence of a 'Bitmap' object with appropriate
// 'GetPixel' and 'SetPixel' methods and 'Width' and 'Height' properties for manipulation.
// Additionally, 'Color' is used to get and set pixel information, which is typical
// when dealing with image processing.

' Ensure the necessary namespaces are included for image processing.
Imports System
Imports System.Drawing

' This extension method applies a grayscale effect to an image.
Public Module ImageExtensions
	''' <summary>
	''' Converts an input image to grayscale.
	''' </summary>
	''' <param name="imageInput">An instance of an Image object representing the image to be converted.</param>
	''' <exception cref="ArgumentNullException">Thrown when the image input is null.</exception>
	<System.Runtime.CompilerServices.Extension> _
	Public Sub ToGrayScale(ByVal imageInput As Bitmap)
		' Check if the imageInput is null to prevent null reference exceptions
		If imageInput Is Nothing Then
			Throw New ArgumentNullException(NameOf(imageInput), "The image cannot be null.")
		End If

		' Loop through each pixel in the image and apply the grayscale effect
		For x As Integer = 0 To imageInput.Width - 1
			For y As Integer = 0 To imageInput.Height - 1
				' Get the pixel color at (x, y)
				Dim pixelColor As Color = imageInput.GetPixel(x, y)

				' Calculate the luminance using a common formula that considers human perception
				' This formula takes into account the different contributions to brightness from R, G, B
				Dim grayScaleValue As Integer = CInt(Math.Truncate(pixelColor.R * 0.3 + pixelColor.G * 0.59 + pixelColor.B * 0.11))

				' Create a new grayscale color with the same alpha value
				Dim grayColor As Color = Color.FromArgb(pixelColor.A, grayScaleValue, grayScaleValue, grayScaleValue)

				' Set the new grayscale color to the pixel
				imageInput.SetPixel(x, y, grayColor)
			Next y
		Next x
	End Sub
End Module

' Note: This code assumes the existence of a 'Bitmap' object with appropriate
' 'GetPixel' and 'SetPixel' methods and 'Width' and 'Height' properties for manipulation.
' Additionally, 'Color' is used to get and set pixel information, which is typical
' when dealing with image processing.

IRON VB CONVERTER ERROR developers@ironsoftware.com

using IronOcr;

// Instantiate IronTesseract for Optical Character Recognition
IronTesseract ocrTesseract = new IronTesseract();

// Use a using statement to ensure the image is properly disposed of after use
using (var imageInput = new OcrInput("sample.jpg"))
{
    // Define the color to be replaced
    IronSoftware.Drawing.Color currentColor = IronSoftware.Drawing.Color.FromHtml("#DB645C");
    
    // Define the new color that will replace the current color
    IronSoftware.Drawing.Color newColor = IronSoftware.Drawing.Color.DarkCyan;

    // Replace the specified color in the image with the new color
    // The 80 represents the tolerance level, determining how close a color should match to be replaced
    imageInput.ReplaceColor(currentColor, newColor, 80);

    // Export the modified image to a specified directory and with a specified name pattern
    imageInput.SaveAsImages("replaceColor");
}

/* 
Details:
- The `IronTesseract` class is used to create an instance of the IronOCR OCR engine. 
- `OcrInput` here appears to be used more to manipulate an image's color rather than OCR processing.
- The image loaded is "sample.jpg", and it will have a specified color (#DB645C) replaced with DarkCyan.
- The `ReplaceColor` function adjusts color based on a tolerance level; colors similar to the specified color within the tolerance will be altered.
- The modified image(s) are saved with a naming pattern that starts with "replaceColor".
*/

Imports IronOcr

' Instantiate IronTesseract for Optical Character Recognition
Private ocrTesseract As New IronTesseract()

' Use a using statement to ensure the image is properly disposed of after use
Using imageInput = New OcrInput("sample.jpg")
	' Define the color to be replaced
	Dim currentColor As IronSoftware.Drawing.Color = IronSoftware.Drawing.Color.FromHtml("#DB645C")

	' Define the new color that will replace the current color
	Dim newColor As IronSoftware.Drawing.Color = IronSoftware.Drawing.Color.DarkCyan

	' Replace the specified color in the image with the new color
	' The 80 represents the tolerance level, determining how close a color should match to be replaced
	imageInput.ReplaceColor(currentColor, newColor, 80)

	' Export the modified image to a specified directory and with a specified name pattern
	imageInput.SaveAsImages("replaceColor")
End Using

' 
'Details:
'- The `IronTesseract` class is used to create an instance of the IronOCR OCR engine. 
'- `OcrInput` here appears to be used more to manipulate an image's color rather than OCR processing.
'- The image loaded is "sample.jpg", and it will have a specified color (#DB645C) replaced with DarkCyan.
'- The `ReplaceColor` function adjusts color based on a tolerance level; colors similar to the specified color within the tolerance will be altered.
'- The modified image(s) are saved with a naming pattern that starts with "replaceColor".
'

// Import necessary namespaces
using IronOcr;
using System;

// The code utilizes the IronTesseract OCR engine to read text from a specified image file.
// This is especially useful for extracting readable content from images where text is prominently displayed.
// Instantiate IronTesseract
var ocrTesseract = new IronTesseract();

// Using statement to ensure the OcrInput is cleaned up after use, freeing any used resources
// It references an image file named "sample.jpg". Ensure the file path is correct and the file exists.
using (var imageInput = new OcrInput("sample.jpg"))
{
    // Define the text color to focus on by using a specific RGB color. 
    // This example sets it to a shade of red with RGB values (219, 100, 92).
    var focusColor = IronSoftware.Drawing.Color.FromRgb(219, 100, 92);

    // Set the color tolerance to 60 which allows for minor variations in the color shade.
    // This is helpful if the text color in the image slightly varies due to lighting or other factors.
    imageInput.SelectTextColor(focusColor, 60);

    // Perform OCR on the image input using the IronTesseract engine
    var ocrResult = ocrTesseract.Read(imageInput);

    // Output the text extracted from the image to the console
    Console.WriteLine(ocrResult.Text);
}

' Import necessary namespaces
Imports IronOcr
Imports System

' The code utilizes the IronTesseract OCR engine to read text from a specified image file.
' This is especially useful for extracting readable content from images where text is prominently displayed.
' Instantiate IronTesseract
Private ocrTesseract = New IronTesseract()

' Using statement to ensure the OcrInput is cleaned up after use, freeing any used resources
' It references an image file named "sample.jpg". Ensure the file path is correct and the file exists.
Using imageInput = New OcrInput("sample.jpg")
	' Define the text color to focus on by using a specific RGB color. 
	' This example sets it to a shade of red with RGB values (219, 100, 92).
	Dim focusColor = IronSoftware.Drawing.Color.FromRgb(219, 100, 92)

	' Set the color tolerance to 60 which allows for minor variations in the color shade.
	' This is helpful if the text color in the image slightly varies due to lighting or other factors.
	imageInput.SelectTextColor(focusColor, 60)

	' Perform OCR on the image input using the IronTesseract engine
	Dim ocrResult = ocrTesseract.Read(imageInput)

	' Output the text extracted from the image to the console
	Console.WriteLine(ocrResult.Text)
End Using