using System;

using System.Net.Http;

using System.Threading.Tasks;

using Tesseract;

public class Program

{

    static async Task Main(string[] args)

    {

        // Replace "path/to/your/image.png" with the actual path to your banknote image

​

        HttpClient client = new HttpClient();

        byte[] buffer = await client.GetByteArrayAsync("https://upload.wikimedia.org/wikipedia/commons/2/23/US_one_dollar_bill%2C_obverse%2C_series_2009.jpg");

        // Initialize Tesseract engine

        using (var engine = new TesseractEngine(@"path/to/tessdata", "eng", EngineMode.Default))

        {

            // Load image

            using (var img = Pix.LoadFromMemory(buffer))

            {

                // Set image to recognize

                using (var page = engine.Process(img))

                {

                    // Get recognized text

                    string text = page.GetText();

​

                    // Extract serial number

                    string serialNumber = ExtractSerialNumber(text);

​

                    // Output serial number

                    Console.WriteLine("Serial Number: " + serialNumber);

                }

            }

        }

    }

​

    static string ExtractSerialNumber(string text)

    {

        // Simple method to extract serial number

        // Modify this method according to your specific banknote layout and format

        // For example, you might use regular expressions or specific patterns

        // This is just a placeholder method

​

        // Split text into words

        string[] words = text.Split(new[] { ' ', '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);

​

        // Find a word that resembles a serial number

        foreach (string word in words)

        {

            // Placeholder condition to identify serial numbers

            // Replace this with your actual logic

            if (word.Length >= 6 && word.Length <= 12 && word.ToUpper() == word && !word.Contains("$"))

            {

                return word;

            }

        }

​

        // If no serial number found, return null or empty string

        return "";

    }

}