其他

探索 IronOCR 的许多其他功能--满足您所有 OCR 需求的理想库！

支持的文件类型

多页/帧 TIFF 和 GIF

轻松处理以 TIFF 和 GIF 格式存储的多页文档。IronOcr 一次操作即可读取所有页面或帧，省去了手动分割文件的复杂过程。

using IronOcr;

// Instantiate IronTesseract
IronTesseract ocrTesseract = new IronTesseract();

// Import TIFF/TIF
using var imageInput = new OcrImageInput("sample.tiff");

// Perform OCR
OcrResult ocrResult = ocrTesseract.Read(imageInput);

using IronOcr;

// Instantiate IronTesseract
IronTesseract ocrTesseract = new IronTesseract();

// Import TIFF/TIF
using var imageInput = new OcrImageInput("sample.tiff");

// Perform OCR
OcrResult ocrResult = ocrTesseract.Read(imageInput);

Imports IronOcr

' Instantiate IronTesseract
Dim ocrTesseract As New IronTesseract()

' Import TIFF/TIF
Using imageInput = New OcrImageInput("sample.tiff")

    ' Perform OCR
    Dim ocrResult As OcrResult = ocrTesseract.Read(imageInput)
End Using

PDF / PDF 流

直接从 PDF 文件或内存流中准确提取文本，轻松处理原生和扫描（基于图像的）PDF。

了解如何：在 .NET C# 中阅读 PDF

using IronOcr;

// Instantiate IronTesseract
IronTesseract ocrTesseract = new IronTesseract();

// Add PDF
using var pdfInput = new OcrPdfInput("sample.pdf");

// Perform OCR
OcrResult ocrResult = ocrTesseract.Read(pdfInput);

using IronOcr;

// Instantiate IronTesseract
IronTesseract ocrTesseract = new IronTesseract();

// Add PDF
using var pdfInput = new OcrPdfInput("sample.pdf");

// Perform OCR
OcrResult ocrResult = ocrTesseract.Read(pdfInput);

Imports IronOcr

' Instantiate IronTesseract
Dim ocrTesseract As New IronTesseract()

' Add PDF
Using pdfInput As New OcrPdfInput("sample.pdf")
    ' Perform OCR
    Dim ocrResult As OcrResult = ocrTesseract.Read(pdfInput)
End Using

图片（jpg、png、bmp）

IronOCR 支持所有标准图像格式，如 JPG、PNG 和 BMP。只需提供文件路径，IronOCR 就会处理剩下的工作。

了解如何：在 .NET C# 中读取图像

using IronOcr;

// Instantiate IronTesseract
IronTesseract ocrTesseract = new IronTesseract();

// Add image
using var imageInput = new OcrImageInput("Potter.png");

// Perform OCR
OcrResult ocrResult = ocrTesseract.Read(imageInput);

using IronOcr;

// Instantiate IronTesseract
IronTesseract ocrTesseract = new IronTesseract();

// Add image
using var imageInput = new OcrImageInput("Potter.png");

// Perform OCR
OcrResult ocrResult = ocrTesseract.Read(imageInput);

Imports IronOcr

' Instantiate IronTesseract
Dim ocrTesseract As New IronTesseract()

' Add image
Using imageInput = New OcrImageInput("Potter.png")
    ' Perform OCR
    Dim ocrResult As OcrResult = ocrTesseract.Read(imageInput)
End Using

性能提升器

多线程Tesseract OCR

构建高度可扩展、反应灵敏的应用程序，完全支持并发处理。在不同的线程中安全地同时处理多个文档，以实现高性能的服务器端部署。

了解如何：C# 中的多线程 Tesseract OCR

using IronOcr;

var ocrTesseract = new IronTesseract();
using var ocrInput = new OcrInput();
ocrInput.LoadPdf("sample.pdf");

// Image processing is automatically multi-threaded
ocrInput.Deskew();

// OCR reading is automatically multi-threaded too
var ocrResult = ocrTesseract.Read(ocrInput);

using IronOcr;

var ocrTesseract = new IronTesseract();
using var ocrInput = new OcrInput();
ocrInput.LoadPdf("sample.pdf");

// Image processing is automatically multi-threaded
ocrInput.Deskew();

// OCR reading is automatically multi-threaded too
var ocrResult = ocrTesseract.Read(ocrInput);

Imports IronOcr

Dim ocrTesseract = New IronTesseract()
Using ocrInput = New OcrInput()
    ocrInput.LoadPdf("sample.pdf")

    ' Image processing is automatically multi-threaded
    ocrInput.Deskew()

    ' OCR reading is automatically multi-threaded too
    Dim ocrResult = ocrTesseract.Read(ocrInput)
End Using

中止令牌

保持对长期运行的 OCR 任务的控制。使用中止令牌优雅地暂停或取消进程，这对于管理资源或执行用户可取消的操作非常有用。

了解如何：C# Tesseract Abort Token

using IronOcr;
using System.Threading;

// Opens a Large PDF which may need to be cancelled early
IronTesseract ocrTesseract = new IronTesseract() { Language = OcrLanguage.English };
using var ocrInput = new OcrInput();
ocrInput.LoadPdf("sample.pdf");

// Starts a read on the PDF using IronOCR
OcrReadTask ocrRead = ocrTesseract.ReadAsync(ocrInput);
Thread.Sleep(1000); // Time passes...

// Cancellation Example:
ocrRead.Cancel();
ocrRead.Wait();

using IronOcr;
using System.Threading;

// Opens a Large PDF which may need to be cancelled early
IronTesseract ocrTesseract = new IronTesseract() { Language = OcrLanguage.English };
using var ocrInput = new OcrInput();
ocrInput.LoadPdf("sample.pdf");

// Starts a read on the PDF using IronOCR
OcrReadTask ocrRead = ocrTesseract.ReadAsync(ocrInput);
Thread.Sleep(1000); // Time passes...

// Cancellation Example:
ocrRead.Cancel();
ocrRead.Wait();

Imports IronOcr
Imports System.Threading

' Opens a Large PDF which may need to be cancelled early
Dim ocrTesseract As New IronTesseract() With {.Language = OcrLanguage.English}
Using ocrInput As New OcrInput()
    ocrInput.LoadPdf("sample.pdf")

    ' Starts a read on the PDF using IronOCR
    Dim ocrRead As OcrReadTask = ocrTesseract.ReadAsync(ocrInput)
    Thread.Sleep(1000) ' Time passes...

    ' Cancellation Example:
    ocrRead.Cancel()
    ocrRead.Wait()
End Using

超时

防止您的应用程序挂起在困难或损坏的文件上。为任何 OCR 进程设置特定的超时时间，以确保更好的资源管理和系统稳定性。

了解如何：C# Tesseract 超时

using IronOcr;

int cancel_time = 1000;

// Opens a Large PDF which may need to be cancelled early
IronTesseract ocrTesseract = new IronTesseract() { Language = OcrLanguage.English };
var ocrInput = new OcrInput();
ocrInput.LoadPdf("large-report.pdf");

// Starts a read on the PDF using IronOCR with specified cancel time
OcrReadTask ocrRead = ocrTesseract.ReadAsync(ocrInput, cancel_time);

using IronOcr;

int cancel_time = 1000;

// Opens a Large PDF which may need to be cancelled early
IronTesseract ocrTesseract = new IronTesseract() { Language = OcrLanguage.English };
var ocrInput = new OcrInput();
ocrInput.LoadPdf("large-report.pdf");

// Starts a read on the PDF using IronOCR with specified cancel time
OcrReadTask ocrRead = ocrTesseract.ReadAsync(ocrInput, cancel_time);

Imports IronOcr

Dim cancel_time As Integer = 1000

' Opens a Large PDF which may need to be cancelled early
Dim ocrTesseract As New IronTesseract() With {.Language = OcrLanguage.English}
Dim ocrInput = New OcrInput()
ocrInput.LoadPdf("large-report.pdf")

' Starts a read on the PDF using IronOCR with specified cancel time
Dim ocrRead As OcrReadTask = ocrTesseract.ReadAsync(ocrInput, cancel_time)

OCR 流程跟踪

监控 OCR 操作从 0% 到 100% 的实时进度。这样，您就可以通过进度条向用户提供反馈，或更好地估算大型工作的完成时间。

了解如何：在 .NET C# 中使用进度跟踪

using IronOcr;

var ocrTesseract = new IronTesseract();

// Subscribe to OcrProgress event
ocrTesseract.OcrProgress += (_, ocrProgressEventsArgs) =>
{
    Console.WriteLine("Progress(%) | Duration");
    Console.WriteLine("    " + ocrProgressEventsArgs.ProgressPercent + "%     | " + ocrProgressEventsArgs.Duration.TotalSeconds + "s");
};
using var input = new OcrInput();
input.LoadPdf("Experiences-in-Biodiversity-Research-A-Field-Course.pdf");
// Progress events will fire during the read operation
var result = ocrTesseract.Read(input);

using IronOcr;

var ocrTesseract = new IronTesseract();

// Subscribe to OcrProgress event
ocrTesseract.OcrProgress += (_, ocrProgressEventsArgs) =>
{
    Console.WriteLine("Progress(%) | Duration");
    Console.WriteLine("    " + ocrProgressEventsArgs.ProgressPercent + "%     | " + ocrProgressEventsArgs.Duration.TotalSeconds + "s");
};
using var input = new OcrInput();
input.LoadPdf("Experiences-in-Biodiversity-Research-A-Field-Course.pdf");
// Progress events will fire during the read operation
var result = ocrTesseract.Read(input);

Imports IronOcr

Dim ocrTesseract = New IronTesseract()

' Subscribe to OcrProgress event
AddHandler ocrTesseract.OcrProgress, Sub(_, ocrProgressEventsArgs)
    Console.WriteLine("Progress(%) | Duration")
    Console.WriteLine("    " & ocrProgressEventsArgs.ProgressPercent & "%     | " & ocrProgressEventsArgs.Duration.TotalSeconds & "s")
End Sub

Using input = New OcrInput()
    input.LoadPdf("Experiences-in-Biodiversity-Research-A-Field-Course.pdf")
    ' Progress events will fire during the read operation
    Dim result = ocrTesseract.Read(input)
End Using