I want to Get All Type of Maths Equation From Image

I try This Solution but Its Can't Able to Get All type of Math Equation From Image Source

private void GetEquation() 
{
    try 
    {
        Regex imgRegex = new Regex(@"", RegexOptions.IgnoreCase);
        MatchCollection imgMatches = imgRegex.Matches(ImageSting);

        foreach (Match match in imgMatches) 
        {
            string imgTag = match.Value;
            string base64String = match.Groups[1].Value; // Extract the base64 string

            // Convert Base64 image to math equation
            string mathEquation = ConvertImageToMathEquation(base64String);

            // Replace tag with extracted math equation
            question = question.Replace(imgTag, $"");
        }
    } 
    catch (Exception ex) 
    {
        MessageBox.Show(ex.Message);
    }
}

public static string ConvertImageToMathEquation(string base64Image) 
{
    byte[] imageBytes = Convert.FromBase64String(base64Image);

    // Save the image to a temporary file
    string tempImagePath = Path.Combine(Path.GetTempPath(), "temp_math_image.png");
    File.WriteAllBytes(tempImagePath, imageBytes);

    // Use Tesseract to extract the equation
    string tessdataPath = @"C:\Program Files\Tesseract-OCR\tessdata";

    using (var engine = new TesseractEngine(tessdataPath, "eng+equ", EngineMode.Default)) 
    {
        engine.SetVariable("tessedit_char_whitelist", "0123456789+-=*/()"); // Restrict characters to math symbols
        engine.DefaultPageSegMode = PageSegMode.SingleBlock; // Optimize for single equations

        using (var img = Pix.LoadFromFile(tempImagePath)) 
        {
            using (var page = engine.Process(img)) 
            {
                string extractedText = page.GetText().Trim();
                return string.IsNullOrEmpty(extractedText) ? "No equation detected" : extractedText;
            }
        }
    }
}