Leadtools.Forms.Ocr Namespace : OcrStatistic Structure |
[SerializableAttribute()] public struct OcrStatistic : System.ValueType
'Declaration <SerializableAttribute()> Public Structure OcrStatistic Inherits System.ValueType
'Usage Dim instance As OcrStatistic
[SerializableAttribute()] public class OcrStatistic
@interface LTOcrStatistic : NSObject
public class OcrStatistic
JAVASCRIPT_NOSTRUCTS
[SerializableAttribute()] public value class OcrStatistic : public System.ValueType
This structure contains the accuracy and timing data of the latest successful recognition process.
To obtain the statistic, use GetLastStatistic.
Note that the time spent for the text post-processing can be calculated as follows: PostProcessingTime = statistic.ReadingTime - statistic.RecognitionTime.
Note: Only the following members are available for the LEADTOOLS OCR Advantage Engine
Imports Leadtools Imports Leadtools.Codecs Imports Leadtools.Forms.Ocr Imports Leadtools.Forms Imports Leadtools.Forms.DocumentWriters Imports Leadtools.WinForms Public Sub OcrStatisticExample() ' Create an instance of the engine Using ocrEngine As IOcrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Advantage, False) ' Start the engine using default parameters ocrEngine.Startup(Nothing, Nothing, Nothing, LEAD_VARS.OcrAdvantageRuntimeDir) Dim tifFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif") Dim pdfFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.pdf") ' Create an OCR document Using ocrDocument As IOcrDocument = ocrEngine.DocumentManager.CreateDocument() ' Add a page to the document Dim ocrPage As IOcrPage = ocrDocument.Pages.AddPage(tifFileName, Nothing) ' Process the page ocrPage.AutoPreprocess(OcrAutoPreprocessPageCommand.Deskew, Nothing) ' Recognize the page ' Note, Recognize can be called without calling AutoZone or manually adding zones. The engine will ' check and automatically auto-zones the page ocrPage.Recognize(Nothing) ' Save the document we have as PDF ocrDocument.Save(pdfFileName, DocumentFormat.Pdf, Nothing) ' Show the statistic about the last recognize operation Dim statistic As OcrStatistic = ocrEngine.GetLastStatistic() Console.WriteLine("Recognized characters: {0}", statistic.RecognizedCharacters) Console.WriteLine("Recognized words: {0}", statistic.RecognizedWords) Console.WriteLine("Rejected characters: {0}", statistic.RejectedCharacters) Console.WriteLine("Corrected words: {0}", statistic.CorrectedWords) Console.WriteLine("Recognition time: {0} ms", statistic.RecognitionTime) Console.WriteLine("Reading time: {0} ms", statistic.ReadingTime) Console.WriteLine("Image Preprocessing time: {0} ms", statistic.ImagePreprocessingTime) Console.WriteLine("Decomposition time: {0} ms", statistic.DecompositionTime) Console.WriteLine("Post processing time: {0} ms", statistic.ReadingTime - statistic.RecognitionTime) End Using ' Shutdown the engine ' Note: calling Dispose will also automatically shutdown the engine if it has been started ocrEngine.Shutdown() End Using End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" Public Const OcrAdvantageRuntimeDir As String = "C:\LEADTOOLS 18\Bin\Common\OcrAdvantageRuntime" End Class
using Leadtools; using Leadtools.Codecs; using Leadtools.Forms.Ocr; using Leadtools.Forms.DocumentWriters; public void OcrStatisticExample() { // Create an instance of the engine using (IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Advantage, false)) { // Start the engine using default parameters ocrEngine.Startup(null, null, null, LEAD_VARS.OcrAdvantageRuntimeDir); string tifFileName = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif"); string pdfFileName = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.pdf"); // Create an OCR document using (IOcrDocument ocrDocument = ocrEngine.DocumentManager.CreateDocument()) { // Add a page to the document IOcrPage ocrPage = ocrDocument.Pages.AddPage(tifFileName, null); // Process the page ocrPage.AutoPreprocess(OcrAutoPreprocessPageCommand.Deskew, null); // Recognize the page // Note, Recognize can be called without calling AutoZone or manually adding zones. The engine will // check and automatically auto-zones the page ocrPage.Recognize(null); // Save the document we have as PDF ocrDocument.Save(pdfFileName, DocumentFormat.Pdf, null); // Show the statistic about the last recognize operation OcrStatistic statistic = ocrEngine.GetLastStatistic(); Console.WriteLine("Recognized characters: {0}", statistic.RecognizedCharacters); Console.WriteLine("Recognized words: {0}", statistic.RecognizedWords); Console.WriteLine("Rejected characters: {0}", statistic.RejectedCharacters); Console.WriteLine("Corrected words: {0}", statistic.CorrectedWords); Console.WriteLine("Recognition time: {0} ms", statistic.RecognitionTime); Console.WriteLine("Reading time: {0} ms", statistic.ReadingTime); Console.WriteLine("Image Preprocessing time: {0} ms", statistic.ImagePreprocessingTime); Console.WriteLine("Decomposition time: {0} ms", statistic.DecompositionTime); Console.WriteLine("Post processing time: {0} ms", statistic.ReadingTime - statistic.RecognitionTime); } // Shutdown the engine // Note: calling Dispose will also automatically shutdown the engine if it has been started ocrEngine.Shutdown(); } } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; public const string OcrAdvantageRuntimeDir = @"C:\LEADTOOLS 18\Bin\Common\OcrAdvantageRuntime"; }
using Leadtools; using Leadtools.Codecs; using Leadtools.Forms.Ocr; using Leadtools.Forms.DocumentWriters; [TestMethod] public async Task OcrStatisticExample() { // Create an instance of the engine IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Advantage, false); // Start the engine using default parameters ocrEngine.Startup(null, null, String.Empty, Tools.OcrEnginePath); string tifFileName = @"Assets\Ocr1.tif"; string pdfFileName = "Ocr1.pdf"; // Create an OCR document IOcrDocument ocrDocument = ocrEngine.DocumentManager.CreateDocument(); // Add a page to the document IOcrPage ocrPage = null; using (RasterCodecs codecs = new RasterCodecs()) { StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(tifFileName); using (RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile))) { ocrPage = ocrDocument.Pages.AddPage(image, null); } } // Process the page ocrPage.AutoPreprocess(OcrAutoPreprocessPageCommand.Deskew, null); // Recognize the page // Note, Recognize can be called without calling AutoZone or manually adding zones. The engine will // check and automatically auto-zones the page ocrPage.Recognize(null); // Save the document we have as PDF StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(pdfFileName, CreationCollisionOption.ReplaceExisting); await ocrDocument.SaveAsync(LeadStreamFactory.Create(saveFile), DocumentFormat.Pdf, null); // Show the statistic about the last recognize operation OcrStatistic statistic = ocrEngine.GetLastStatistic(); Debug.WriteLine("Recognized characters: {0}", statistic.RecognizedCharacters); Debug.WriteLine("Recognized words: {0}", statistic.RecognizedWords); Debug.WriteLine("Rejected characters: {0}", statistic.RejectedCharacters); Debug.WriteLine("Corrected words: {0}", statistic.CorrectedWords); Debug.WriteLine("Recognition time: {0} ms", statistic.RecognitionTime); Debug.WriteLine("Reading time: {0} ms", statistic.ReadingTime); Debug.WriteLine("Image Preprocessing time: {0} ms", statistic.ImagePreprocessingTime); Debug.WriteLine("Decomposition time: {0} ms", statistic.DecompositionTime); Debug.WriteLine("Post processing time: {0} ms", statistic.ReadingTime - statistic.RecognitionTime); // Shutdown the engine ocrEngine.Shutdown(); }
OcrStatistic Members
Leadtools.Forms.Ocr Namespace
IOcrEngine.GetLastStatistic
IOcrEngine.Startup
IOcrEngine.IsStarted
IOcrEngine.Shutdown
IOcrPage Interface
IOcrPage.AutoPreprocess
AutoZone Method
IOcrPage.Recognize
IOcrDocument.Save
IOcrDocument.SaveXml
OcrEngineManager Class
OcrEngineType Enumeration
Programming with Leadtools .NET OCR