LEADTOOLS Recognition Imaging SDK是精選的LEADTOOLS SDK功能集，旨在在企業級文檔自動化解決方案中構建端到端文檔成像應用程序，這些解決方案需要OCR，MICR，OMR，條形碼，表單識別和處理，PDF，打印捕獲 ，檔案，注釋和圖像查看功能。 這套功能強大的工具利用LEAD屢獲殊榮的圖像處理技術，智能識別可用于識別和提取任何類型的掃描或傳真形式圖像數據的文檔功能。

點擊下載LEADTOOLS Recognition Imaging SDK試用版

使用最先進的表單處理API可以自動解決數據輸入問題 。無論您是在處理客戶調查，稅務文件還是開票記錄，每個行業都每天使用表格開展業務。將數據從紙張移動到數字介質可能會很耗時。因此，LEADTOOLS開發了專有功能，可以從包含機器打印文本， 手寫文本， MICR， MRZ和 OMR字段的任意組合的圖像中提取文本 。LEADTOOLS將自動檢測并識別所有內容！以下是快速且準確地處理各種表單類型的主要步驟，無論數據如何格式化。

首先，我們需要初始化表單引擎。這完成了讀取和識別數據的所有艱苦工作：

static void InitFormsEngines()
{
Console.WriteLine("Initializing Engines");
codecs = new RasterCodecs();
recognitionEngine = new FormRecognitionEngine();
processingEngine = new FormProcessingEngine();
formsOCREngine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD);
formsOCREngine.Startup(codecs, null, null, @"C:\LEADTOOLS21\Bin\Common\OcrLEADRuntime");
OcrObjectsManager ocrObjectsManager = new OcrObjectsManager(formsOCREngine);
ocrObjectsManager.Engine = formsOCREngine;
recognitionEngine.ObjectsManagers.Add(ocrObjectsManager);

Console.WriteLine("Engines initialized successfully");
}

下一步是指定主表單：

private static void CreateMasterFormAttributes()
{
Console.WriteLine("Processing Master Form");
string[] masterFileNames = Directory.GetFiles(@"C:\LEADTOOLS21\Resources\Images\Forms\MasterForm Sets\OCR", "*.tif", SearchOption.AllDirectories);

foreach (string masterFileName in masterFileNames)
{
string formName = Path.GetFileNameWithoutExtension(masterFileName);
using (RasterImage image = codecs.Load(masterFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, -1))
{
FormRecognitionAttributes masterFormAttributes = recognitionEngine.CreateMasterForm(formName, Guid.Empty, null);
for (int i = 0; i < image.PageCount; i++)
{
image.Page = i + 1;
recognitionEngine.AddMasterFormPage(masterFormAttributes, image, null);
}
recognitionEngine.CloseMasterForm(masterFormAttributes);
File.WriteAllBytes(formName + ".bin", masterFormAttributes.GetData());
}
}
Console.WriteLine("Master Form Processing Complete");
Console.WriteLine("=============================================================");
}

private static void RecognizeForm()
{
Console.WriteLine("Recognizing Form\n");
var GetProjectDirectory = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
string formToRecognize = @"C:\LEADTOOLS21\Resources\Images\Forms\Forms to be Recognized\OCR\W9_OCR_Filled.tif";
using (RasterImage image = codecs.Load(formToRecognize, 0, CodecsLoadByteOrder.BgrOrGray, 1, -1))
{
FormRecognitionAttributes filledFormAttributes = recognitionEngine.CreateForm(null);

for (int i = 0; i < image.PageCount; i++)
{
image.Page = i + 1;
recognitionEngine.AddFormPage(filledFormAttributes, image, null);
}
recognitionEngine.CloseForm(filledFormAttributes);

string resultMessage = "The form could not be recognized";
string[] masterFileNames = Directory.GetFiles(GetProjectDirectory, "*.bin");

foreach (string masterFileName in masterFileNames)
{
string fieldsfName = Path.GetFileNameWithoutExtension(masterFileName) + ".xml";
string fieldsfullPath = Path.Combine(@"C:\LEADTOOLS21\Resources\Images\Forms\MasterForm Sets\OCR", fieldsfName);
processingEngine.LoadFields(fieldsfullPath);
FormRecognitionAttributes masterFormAttributes = new FormRecognitionAttributes();
masterFormAttributes.SetData(File.ReadAllBytes(masterFileName));
FormRecognitionResult recognitionResult = recognitionEngine.CompareForm(masterFormAttributes, filledFormAttributes, null);
if (recognitionResult.Confidence >= 80)
{
List<PageAlignment> alignment = new List<PageAlignment>();
for (int k = 0; k < recognitionResult.PageResults.Count; k++)
alignment.Add(recognitionResult.PageResults[k].Alignment);

resultMessage = $"This form has been recognized as a {Path.GetFileNameWithoutExtension(masterFileName)}";
ProcessForm(image, alignment);
break;
}
}

Console.WriteLine(resultMessage, "Recognition Results");
Console.WriteLine("=============================================================\n");
}
}

private static void ProcessForm(RasterImage image, List<PageAlignment> alignment)
{
processingEngine.OcrEngine = formsOCREngine;
string resultsMessage = string.Empty;

processingEngine.Process(image, alignment);
foreach (FormPage formPage in processingEngine.Pages)
foreach (FormField field in formPage)
if (field != null)
resultsMessage = $"{resultsMessage}{field.Name} = {(field.Result as TextFormFieldResult).Text}\n";

if (string.IsNullOrEmpty(resultsMessage))
Console.WriteLine("No fields were processed", "FieldProcessing Results");
else
Console.WriteLine(resultsMessage, "Field ProcessingResults");
}

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