收据扫描 API（开发者教程）

using IronOcr;
using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;

class ReceiptScanner
{
    static void Main()
    {
        var ocr = new IronTesseract();
        // Load the image of the receipt
        using (var input = new OcrInput(@"r2.png"))
        {
            // Perform OCR on the input image
            var result = ocr.Read(input);

            // Regular expression patterns to extract relevant details from the OCR result
            var descriptionPattern = @"\w+\s+(.*?)\s+(\d+\.\d+)\s+Units\s+(\d+\.\d+)\s+Tax15%\s+\$(\d+\.\d+)";
            var pricePattern = @"\$\d+(\.\d{2})?";

            // Variables to store extracted data
            var descriptions = new List<string>();
            var unitPrices = new List<decimal>();
            var taxes = new List<decimal>();
            var amounts = new List<decimal>();

            var lines = result.Text.Split('\n');
            foreach (var line in lines)
            {
                // Match each line against the description pattern
                var descriptionMatch = Regex.Match(line, descriptionPattern);
                if (descriptionMatch.Success)
                {
                    descriptions.Add(descriptionMatch.Groups[1].Value.Trim());
                    unitPrices.Add(decimal.Parse(descriptionMatch.Groups[2].Value));

                    // Calculate tax and total amount for each item
                    var tax = unitPrices[unitPrices.Count - 1] * 0.15m;
                    taxes.Add(tax);
                    amounts.Add(unitPrices[unitPrices.Count - 1] + tax);
                }
            }

            // Output the extracted data
            for (int i = 0; i < descriptions.Count; i++)
            {
                Console.WriteLine($"Description: {descriptions[i]}");
                Console.WriteLine($"Quantity: 1.00 Units");
                Console.WriteLine($"Unit Price: ${unitPrices[i]:0.00}");
                Console.WriteLine($"Taxes: ${taxes[i]:0.00}");
                Console.WriteLine($"Amount: ${amounts[i]:0.00}");
                Console.WriteLine("-----------------------");
            }
        }
    }
}

Imports Microsoft.VisualBasic
Imports IronOcr
Imports System
Imports System.Collections.Generic
Imports System.Text.RegularExpressions

Friend Class ReceiptScanner
	Shared Sub Main()
		Dim ocr = New IronTesseract()
		' Load the image of the receipt
		Using input = New OcrInput("r2.png")
			' Perform OCR on the input image
			Dim result = ocr.Read(input)

			' Regular expression patterns to extract relevant details from the OCR result
			Dim descriptionPattern = "\w+\s+(.*?)\s+(\d+\.\d+)\s+Units\s+(\d+\.\d+)\s+Tax15%\s+\$(\d+\.\d+)"
			Dim pricePattern = "\$\d+(\.\d{2})?"

			' Variables to store extracted data
			Dim descriptions = New List(Of String)()
			Dim unitPrices = New List(Of Decimal)()
			Dim taxes = New List(Of Decimal)()
			Dim amounts = New List(Of Decimal)()

			Dim lines = result.Text.Split(ControlChars.Lf)
			For Each line In lines
				' Match each line against the description pattern
				Dim descriptionMatch = Regex.Match(line, descriptionPattern)
				If descriptionMatch.Success Then
					descriptions.Add(descriptionMatch.Groups(1).Value.Trim())
					unitPrices.Add(Decimal.Parse(descriptionMatch.Groups(2).Value))

					' Calculate tax and total amount for each item
					Dim tax = unitPrices(unitPrices.Count - 1) * 0.15D
					taxes.Add(tax)
					amounts.Add(unitPrices(unitPrices.Count - 1) + tax)
				End If
			Next line

			' Output the extracted data
			For i As Integer = 0 To descriptions.Count - 1
				Console.WriteLine($"Description: {descriptions(i)}")
				Console.WriteLine($"Quantity: 1.00 Units")
				Console.WriteLine($"Unit Price: ${unitPrices(i):0.00}")
				Console.WriteLine($"Taxes: ${taxes(i):0.00}")
				Console.WriteLine($"Amount: ${amounts(i):0.00}")
				Console.WriteLine("-----------------------")
			Next i
		End Using
	End Sub
End Class