OcrZoneCell Class

Summary

Contains information of a cell in a zone of type OcrZoneType.Table

Syntax

Objective-C

C++/CLI

Java

Python

[SerializableAttribute()] 
public class OcrZoneCell

@interface LTOcrZoneCell : NSObject<NSCopying>

public class OcrZoneCell

[SerializableAttribute()] 
public ref class OcrZoneCell

class OcrZoneCell:

Remarks

This class contains the information for one cell:

Member	Description
OcrZoneCell.Bounds	The bounding rectangle of the cell in pixels
OcrZoneCell.CellType	The type of the cell.
OcrZoneCell.BackgroundColor	The background color of the cell.
OcrZoneCell.LeftBorderColor, OcrZoneCell.LeftBorderStyle, OcrZoneCell.LeftBorderWidth	The properties of the left border of the cell: Its color, style (none, solid, dashed, etc.) and its width.
OcrZoneCell.TopBorderColor, OcrZoneCell.TopBorderStyle, OcrZoneCell.TopBorderWidth	The properties of the top border of the cell: Its color, style (none, solid, dashed, etc.) and its width.
OcrZoneCell.RightBorderColor, OcrZoneCell.RightBorderStyle, OcrZoneCell.RightBorderWidth	The properties of the right border of the cell: Its color, style (none, solid, dashed, etc.) and its width.
OcrZoneCell.BottomBorderColor, OcrZoneCell.BottomBorderStyle, OcrZoneCell.BottomBorderWidth	The properties of the bottom border of the cell: Its color, style (none, solid, dashed, etc.) and its width.

You can use table cells in one of two ways:

Perform auto-zoning on the page using IOcrPage.AutoZone, if the page contains a detected table, the a zone of type OcrZoneType.Table is created for this table. If the engine successfully detects the cells of the table, These cells can be accessed using IOcrZoneCollection.GetZoneCells and IOcrZoneCollection.SetZoneCells.
Manually add a new OcrZone with its type set to OcrZoneType.Table to the zones collection of a page. Set the cells to null (Nothing in VB), now use the IOcrTableZoneManager.AutoDetectCells method to instruct the engine to detect any cells in this zone and fill the array with the data.

To manipulate a cell properties other than its bound (OcrZoneCell.Bounds), get the array of detected cells through IOcrZoneCollection.GetZoneCells, change the cell background color, style or any border color, style or with. When you are done, re-set the array using IOcrZoneCollection.SetZoneCells.

It is not recommended that you manually remove or add cells to the array, the engine is very sensitive to zone boundaries and any non-accurate information will cause an error. Instead, use the various methods of IOcrTableZoneManager to manipulate the cell location and size.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Forms.Common; 
using Leadtools.Ocr; 
using Leadtools.Drawing; 
 
private static void IOcrTableZoneManageExample(IOcrEngine ocrEngine, string documentFileName) 
{ 
   // Create a document and add the page to it 
   using (IOcrPage ocrPage = ocrEngine.CreatePage(ocrEngine.RasterCodecsInstance.Load(documentFileName, 1), OcrImageSharingMode.AutoDispose)) 
   { 
      // The coordinate for the table has been previously determined: 
      LeadRect tableBounds = new LeadRect(266, 554, 404, 647); 
 
      // Add a table zone with these bounds 
      OcrZone zone = new OcrZone(); 
      zone.ZoneType = OcrZoneType.Table; 
      zone.Bounds = tableBounds; 
      ocrPage.Zones.Add(zone); 
 
      if (ocrPage.TableZoneManager != null) 
      { 
         // Detect the cells inside this table 
         IOcrTableZoneManager ocrTableZoneManager = ocrPage.TableZoneManager; 
         ocrTableZoneManager.AutoDetectCells(0); 
      } 
 
      // Show the cells for this zone (if any) 
      zone = ocrPage.Zones[0]; 
 
      Console.WriteLine("Detected values:"); 
      ShowCells(ocrPage, zone); 
 
      // Change the style of the first cell to have no borders 
      OcrZoneCell[] cells = ocrPage.Zones.GetZoneCells(zone); 
      if (cells != null && cells.Length > 0) 
      { 
         OcrZoneCell cell = cells[0]; 
         cell.LeftBorderStyle = OcrCellBorderLineStyle.None; 
         cell.TopBorderStyle = OcrCellBorderLineStyle.None; 
         cell.RightBorderStyle = OcrCellBorderLineStyle.None; 
         cell.BottomBorderStyle = OcrCellBorderLineStyle.None; 
         cells[0] = cell; 
      } 
 
      ocrPage.Zones.SetZoneCells(zone, cells); 
 
      Console.WriteLine("Updated values:"); 
      ShowCells(ocrPage, zone); 
   } 
} 
 
private static void ShowCells(IOcrPage ocrPage, OcrZone zone) 
{ 
   OcrZoneCell[] cells = ocrPage.Zones.GetZoneCells(zone); 
   if (cells != null) 
   { 
      Console.WriteLine("Table contains {0} zones", cells.Length); 
 
      for (int i = 0; i < cells.Length; i++) 
      { 
         Console.WriteLine("  Cell {0}:", i); 
 
         OcrZoneCell cell = cells[i]; 
         Console.WriteLine("    Type: {0}", cell.CellType); 
         Console.WriteLine("    Bounds: {0}", cell.Bounds); 
         Console.WriteLine("    Background color: {0}", cell.BackgroundColor); 
         Console.WriteLine("    Left border color: {0}", cell.LeftBorderColor); 
         Console.WriteLine("    Left border width: {0}", cell.LeftBorderWidth); 
         Console.WriteLine("    Left border style: {0}", cell.LeftBorderStyle); 
         Console.WriteLine("    Top border color: {0}", cell.TopBorderColor); 
         Console.WriteLine("    Top border width: {0}", cell.TopBorderWidth); 
         Console.WriteLine("    Top border style: {0}", cell.TopBorderStyle); 
         Console.WriteLine("    Right border color: {0}", cell.RightBorderColor); 
         Console.WriteLine("    Right border width: {0}", cell.RightBorderWidth); 
         Console.WriteLine("    Right border style: {0}", cell.RightBorderStyle); 
         Console.WriteLine("    Bottom border color: {0}", cell.BottomBorderColor); 
         Console.WriteLine("    Bottom border width: {0}", cell.BottomBorderWidth); 
         Console.WriteLine("    Bottom border style: {0}", cell.BottomBorderStyle); 
      } 
   } 
}

Requirements

Target Platforms

Reference

OcrZoneCell Members

Leadtools.Ocr Namespace

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Help Version 22.0.2023.3.31

Leadtools.Ocr Assembly

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