VerticalLineMinimumLength Property

Summary

Minimum length of the vertical line, relative to the image height that can be detected.

Syntax

C++/CLI

Python

public int VerticalLineMinimumLength {get; set;}

public:  
   property Int32 VerticalLineMinimumLength 
   { 
      Int32 get() 
      void set(Int32 value) 
   }

VerticalLineMinimumLength # get and set (FindCandidateFormFieldsCommand)

Property Value

Minimum length of the vertical line, relative to the image height that can be detected.

Remarks

The value of this parameter should be between 1 to 100. The FindCandidateFormFieldsCommand returns the ERROR_INV_PARAMETER error code if the value is < 1 or > 100.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
 
public void FindCandidateFormFieldsCommandExample() 
{ 
 
   RasterCodecs codecs = new RasterCodecs(); 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"Forms\Forms to be Recognized\OMR\AnswerSheet_Pattern.jpg"), 0, Leadtools.Codecs.CodecsLoadByteOrder.Bgr, 1, 1); 
   FindCandidateFormFieldsCommand findFields = new FindCandidateFormFieldsCommand(); 
   findFields.HorizontalLineMinimumLength = (char)10; 
   findFields.VerticalLineMinimumLength = (char)3; 
   findFields.Run(image); 
 
   TextField[] textFields = findFields.TextFieldAreas; 
   OMRField[] omrFields = findFields.OMRFieldAreas; 
 
 
   foreach (TextField field in textFields) 
   { 
      // Function TODO : Drawing rectangle field.Bounds 
      // Function TODO : Drawing rectangle field.FilledAreaBounds 
   } 
          
   foreach (OMRField field in omrFields) 
   { 
      if (field.FieldType == BoxOMR) 
      { 
         // Function TODO : Drawing rectangle field.UnFilledBound 
      } 
      { 
         // Function TODO : Drawing circle field.UnFilledBound 
      } 
   } 
          
   image.Dispose(); 
 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

FindCandidateFormFieldsCommand Class

FindCandidateFormFieldsCommand Members

Leadtools.ImageProcessing.Core Namespace

Version History

Leadtools.ImageProcessing.Core Assembly Changes

Download our FREE evaluation

Help Version 22.0.2023.3.31

Leadtools.ImageProcessing.Core Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Core Namespace

Assemblies