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IronOCR
操作指南
結果置信度
How to Get Read Confidence
View the article in
English
在 OCR（光學字符識別）中，讀取信心是指 OCR 系統對其在影像或文件中識別出的文本準確性的確定或可靠程度。 這是對 OCR 系統對識別文本正確性信心度的測量。
高信心分數表示對識別準確性確定程度很高，而低信心分數則表明識別可能不太可靠。
快速入門：一行代碼獲取 OCR 讀取信心
使用 IronTesseract 的 Read 方法搭配影像文件路徑，然後訪問返回的 OcrResult 中的 Confidence 屬性，以查看 IronOCR 對其文本識別的確定程度。 這是一種簡單且可靠的方式來開始評估 OCR 輸出準確性。
Install IronOCR with NuGet Package Manager
Copy and run this code snippet.
double confidence = new IronOcr.IronTesseract().Read("input.png").Confidence;
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class="hsg-featured-snippet">
最小工作流程（5 個步驟） 下載 C# 庫以訪問讀取信心 準備目標影像和 PDF 文件 訪問 OCR 結果的 Confidence 屬性 檢索頁面、段落、行、單詞和字符的信心度 檢查 Choices 屬性以獲取替代單詞選擇
獲取讀取信心範例
在對輸入影像進行 OCR 後，文本的信心水平儲存在 Confidence 屬性中。 使用 'using' 語句自動釋放使用後的物件。 使用 OcrImageInput 和 OcrPdfInput 類分別新增影像和 PDF 等文件。 Read 方法將返回一個 OcrResult 對象，允許訪問 Confidence 屬性。
:path=/static-assets/ocr/content-code-examples/how-to/tesseract-result-confidence-get-confidence.cs
using IronOcr;
// Instantiate IronTesseract
IronTesseract ocrTesseract = new IronTesseract();
// Add image
using var imageInput = new OcrImageInput("sample.tiff");
// Perform OCR
OcrResult ocrResult = ocrTesseract.Read(imageInput);
// Get confidence level
double confidence = ocrResult.Confidence;Imports IronOcr
' Instantiate IronTesseract
Private ocrTesseract As New IronTesseract()
' Add image
Private imageInput = New OcrImageInput("sample.tiff")
' Perform OCR
Private ocrResult As OcrResult = ocrTesseract.Read(imageInput)
' Get confidence level
Private confidence As Double = ocrResult.Confidence
$vbLabelText
$csharpLabel
在不同層次獲取讀取信心
不僅可以檢索整個文件的置信水平，還可以訪問每一頁、每個段落、行、單詞和字符的信心水平。 此外，還可以獲取表示一組或多個緊鄰段落集合的塊的信心。
:path=/static-assets/ocr/content-code-examples/how-to/tesseract-result-confidence-confidence-level.cs
// Get page confidence level
double pageConfidence = ocrResult.Pages[0].Confidence;
// Get paragraph confidence level
double paragraphConfidence = ocrResult.Paragraphs[0].Confidence;
// Get line confidence level
double lineConfidence = ocrResult.Lines[0].Confidence;
// Get word confidence level
double wordConfidence = ocrResult.Words[0].Confidence;
// Get character confidence level
double characterConfidence = ocrResult.Characters[0].Confidence;
// Get block confidence level
double blockConfidence = ocrResult.Blocks[0].Confidence;' Get page confidence level
Dim pageConfidence As Double = ocrResult.Pages(0).Confidence
' Get paragraph confidence level
Dim paragraphConfidence As Double = ocrResult.Paragraphs(0).Confidence
' Get line confidence level
Dim lineConfidence As Double = ocrResult.Lines(0).Confidence
' Get word confidence level
Dim wordConfidence As Double = ocrResult.Words(0).Confidence
' Get character confidence level
Dim characterConfidence As Double = ocrResult.Characters(0).Confidence
' Get block confidence level
Dim blockConfidence As Double = ocrResult.Blocks(0).Confidence
$vbLabelText
$csharpLabel
獲取字符選擇
除了信心水平之外，還有另一個有趣的屬性叫做 Choices 。 Choices 包含一個替代單詞選擇及其統計相關性的列表。 此信息允許用戶訪問其他可能的字符。
:path=/static-assets/ocr/content-code-examples/how-to/tesseract-result-confidence-get-choices.cs
using IronOcr;
using static IronOcr.OcrResult;
// Instantiate IronTesseract
IronTesseract ocrTesseract = new IronTesseract();
// Add image
using var imageInput = new OcrImageInput("Potter.tiff");
// Perform OCR
OcrResult ocrResult = ocrTesseract.Read(imageInput);
// Get choices
Choice[] choices = ocrResult.Characters[0].Choices;Imports IronOcr
Imports IronOcr.OcrResult
' Instantiate IronTesseract
Private ocrTesseract As New IronTesseract()
' Add image
Private imageInput = New OcrImageInput("Potter.tiff")
' Perform OCR
Private ocrResult As OcrResult = ocrTesseract.Read(imageInput)
' Get choices
Private choices() As Choice = ocrResult.Characters(0).Choices
$vbLabelText
$csharpLabel
檢索的信息
class="content-img-align-center">
class="center-image-wrapper">
常見問題解答
OCR辨識中的讀取置信度是指OCR系統對辨識文字準確度的確定性或可靠性等級。高分錶示文字辨識可靠，低分則表示可能有錯誤。
首先從 NuGet 下載 IronOCR 庫。準備好要處理的影像或 PDF 文檔，並使用Read方法存取OcrResult物件的Confidence屬性。
若要取得辨識文字的置信度，請使用 IronOCR 的Read方法，該方法傳回一個OcrResult物件。此物件包含一個Confidence屬性，用於指示文字的準確度。
是的，IronOCR 可讓您檢查文件各部分的置信度，包括頁面、段落、行、單字和字元。這可以對 OCR 過程的準確性進行詳細評估。
OCR中的字元選擇功能提供了一系列替代詞語及其統計相關性。此功能可協助使用者了解OCR系統可能識別的其他字符，從而更深入地了解識別過程。
C# OCR 庫中的Confidence屬性指示辨識文字的準確度。它提供一個數值分數，表示 OCR 系統對辨識準確度的確定程度。
是的，您可以使用 IronOCR 來取得區塊級置信度。一個區塊代表一組緊密相鄰的段落，您可以檢查其置信度來評估該層級的文字辨識準確率。
Choices功能提供備選詞語及其信賴度評分。這有助於使用者了解 OCR 系統提供的其他潛在文本解釋，從而提升對識別文本的評估。
使用 IronOCR 庫在 C# 中實現具有置信度等級的 OCR。設定好環境，準備好輸入文檔，然後使用Read方法取得OcrResult對象，從中可以存取Confidence屬性。
要評估讀取置信度，請下載 IronOCR 庫，準備用於 OCR 處理的文檔，使用Read方法獲取OcrResult ，然後訪問Confidence屬性來評估識別文本的準確性。
技術作家
Curtis Chau 擁有卡爾頓大學計算機科學學士學位，專注於前端開發，擅長於 Node.js、TypeScript、JavaScript 和 React。Curtis 熱衷於創建直觀且美觀的用戶界面，喜歡使用現代框架並打造結構良好、視覺吸引人的手冊。
除了開發之外，Curtis 對物聯網 (IoT) 有著濃厚的興趣，探索將硬體和軟體結合的創新方式。在閒暇時間，他喜愛遊戲並構建 Discord 機器人，結合科技與創意的樂趣。
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