IConfiguration vs IOptions NET
Synchronous and Asynchronous in .NET Core
Model Binding and Validation in ASP.NET Core
ControllerBase vs Controller in ASP.NET Core
ConfigureServices and Configure methods
IHostedService interface in .NET Core
ASP.NET Core request processing
 | Retry Patterns in .NET Core | Clean Architecture |  |
OCR Implementation in ASP.NET MVC using Tesseract |
Install-Package Tesseract -Version 5.2.0
Download from Tesseract tessdata GitHub and place the extracted tessdata folder in your project root.
using System.IO;
using System.Web;
using System.Web.Mvc;
using Tesseract;
public class HomeController : Controller
{
public ActionResult Index()
{
return View();
}
[HttpPost]
public ActionResult Index(HttpPostedFileBase postedFile)
{
if (postedFile != null)
{
string filePath = Server.MapPath("~/Uploads/" + Path.GetFileName(postedFile.FileName));
postedFile.SaveAs(filePath);
string extractText = ExtractTextFromImage(filePath);
ViewBag.Message = extractText.Replace(Environment.NewLine, "<br />");
}
return View();
}
private string ExtractTextFromImage(string filePath)
{
string path = Server.MapPath("~/") + Path.DirectorySeparatorChar + "tessdata";
using (var engine = new TesseractEngine(path, "eng", EngineMode.Default))
{
using (var img = Pix.LoadFromFile(filePath))
{
using (var page = engine.Process(img))
{
return page.GetText();
}
}
}
}
}
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>OCR Upload</title>
</head>
<body>
@using (Html.BeginForm("Index", "Home", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
<span>Select File:</span>
<input type="file" name="postedFile" />
<input type="submit" value="Upload" />
<hr />
<span>@Html.Raw(ViewBag.Message)</span>
}
</body>
</html>
Once the image is uploaded, the extracted text will be displayed below the form.
| | Retry Patterns in .NET Core | Clean Architecture | |