如何獲取讀取信心
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OCR 讀取信心(光學字符識別)指的是OCR系統對其識別圖像或文件中的文本準確性所賦予的確定性或可靠性水平。 這是衡量OCR系統對識別文字正確性的信心程度。
高信心分數表明識別的準確性非常高，而低信心分數則表明識別的可靠性可能較低。
開始使用IronOCR
立即在您的專案中使用IronOCR，並享受免費試用。
如何獲取讀取信心
取得讀取信心示例
在對輸入圖像執行OCR之後，文字的信心程度將儲存於Confidence屬性中。 使用 'using' 語句來自動處理物件的釋放。 使用 OcrImageInput 和 OcrPdfInput 類別分別添加圖像和 PDF 文件。 Read 方法將返回一個 'OcrResult' 物件，該物件允許訪問 信心 屬性。
:path=/static-assets/ocr/content-code-examples/how-to/tesseract-result-confidence-get-confidence.csusing 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.ConfidenceVB C#
獲取不同層級的閱讀信心度
不僅可以檢索整個文件的置信度，還可以訪問每個頁面、段落、行、單詞和字符的置信度。 此外，您可以獲得一個區塊的信心度，該區塊代表一個或多個緊密相鄰的段落的集合。
: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).ConfidenceVB C#
獲取字符選擇
除了信心水平之外，還有另一個有趣的屬性稱為選擇。 選項包含一系列替代詞選擇及其統計相關性。 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.csusing 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).ChoicesVB C#
檢索到的信息
