1. IronOCR
2. Troubleshooting
3. Troubleshooting older version of System.Drawing

Using Older Versions of System.Drawing with IronOCR

.NET 4.6.1 to .NET 4.8 project comes with built-in System.Drawing version 4.0.0. This version of System.Drawing is out of support and may contain vulnerable code.

Trying to instantiate OcrInput from System.Drawing.Image will throw "IronOcr.Exceptions.IronOcrProductException: 'Unable to parse Object [] as a valid image file.'. This due to IronOcr could not recognize System.Drawing.Image as valid input type." exception

Trying to specify Image input type like OcrInput(Image: image) will throw "cannot convert from System.Drawing.Image to SixLabors.ImageSharp.Image" error

Possible solution

• Update System.Drawing.Common to version 6.0.0 Older version of System.Drawing is out of support and may contain vulnerable code.

• Use SixLabors.ImageSharp version 2.1.3 OcrInput can be instantiated with SixLabors.ImageSharp.Image type.

var Ocr = new IronTesseract();

    Image image = Image.Load("image.jpg");

    using (var Input = new OcrInput(image))

    {

        var Result = Ocr.Read(Input);

        Console.WriteLine(Result.Text);

    }

var Ocr = new IronTesseract();

    Image image = Image.Load("image.jpg");

    using (var Input = new OcrInput(image))

    {

        var Result = Ocr.Read(Input);

        Console.WriteLine(Result.Text);

    }

Dim Ocr = New IronTesseract()

	Dim image As Image = System.Drawing.Image.Load("image.jpg")

	Using Input = New OcrInput(image)


		Dim Result = Ocr.Read(Input)

		Console.WriteLine(Result.Text)

	End Using