Azure OCR 与 Google OCR（OCR 功能比较）

using Microsoft.Azure.CognitiveServices.Vision.ComputerVision;
using Microsoft.Azure.CognitiveServices.Vision.ComputerVision.Models;
using System;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        // Create an instance of the ComputerVisionClient
        ComputerVisionClient client = new ComputerVisionClient(new ApiKeyServiceClientCredentials("YOUR_API_KEY"))
        {
            Endpoint = "https://YOUR_REGION.api.cognitive.microsoft.com/"
        };

        // Specify the image URL
        string imageUrl = "https://example.com/image.jpg";

        // Perform OCR on the image
        OcrResult result = await client.RecognizePrintedTextAsync(true, imageUrl);

        // Display the extracted text
        foreach (var region in result.Regions)
        {
            foreach (var line in region.Lines)
            {
                foreach (var word in line.Words)
                {
                    Console.Write(word.Text + " ");
                }
                Console.WriteLine();
            }
        }
    }
}

using System;
using Google.Cloud.Vision.V1;

class Program
{
    static void Main(string[] args)
    {
        // Configure the ImageAnnotator client with credentials
        var clientBuilder = new ImageAnnotatorClientBuilder { CredentialsPath = "path-to-credentials.json" };
        var client = clientBuilder.Build();

        // Load the image from file
        var image = Image.FromFile("path-to-your-image.jpg");

        // Perform text detection on the image
        var response = client.DetectText(image);

        // Display the detected text
        foreach (var annotation in response)
        {
            Console.WriteLine(annotation.Description);
        }
    }
}

using IronOcr;
using System;

class Program
{
    static void Main(string[] args)
    {
        // Specify the path to the image file
        string imagePath = "path-to-your-image.jpg";

        // Instantiate the IronTesseract OCR engine
        var ocr = new IronTesseract
        {
            // Set the language for text recognition
            Language = OcrLanguage.English
        };

        // Perform text recognition on the image
        var result = ocr.Read(imagePath);

        // Display the extracted text
        Console.WriteLine("Extracted Text:");
        Console.WriteLine(result.Text);
    }
}