VintaSoft Barcode .NET SDK v10.0
Vintasoft.Barcode.QualityTests Namespace / ISO15416QualityTest Class
Members Example




In This Topic
    ISO15416QualityTest Class
    In This Topic
    ISO/IEC 15416 barcode print quality test for 1D linear barcodes.
    Object Model
    ISO15416QualityTest ClassISO15416SymbolComponentQualityTest Class
    Syntax
    'Declaration
     
    Public Class ISO15416QualityTest 
    'Usage
     
    Dim instance As ISO15416QualityTest
    public class ISO15416QualityTest 
    public __gc class ISO15416QualityTest 
    public ref class ISO15416QualityTest 
    Remarks
    The algorithm of test is based on ISO/IEC 15416. Test allows to evaluate the barcode's print quality using the following parameters:
    Example
    Imports System.Drawing   
       
    Imports Vintasoft.Barcode   
    Imports Vintasoft.Barcode.BarcodeInfo   
    Imports Vintasoft.Barcode.QualityTests   
       
    ''' <summary>   
    ''' Test that shows how to test the print quality of 1D barcodes.   
    ''' </summary>   
    Class ISO15416QualityTestExample   
       
    	''' <summary>   
    	''' Runs the test.   
    	''' </summary>   
    	Public Shared Sub Test()   
    		' load image with barcode from file   
    		Using barcodeImage As Image = Image.FromFile("test1.jpg")   
    			' read barcodes from image and test the print quality of 1D barcodes   
    			ReadBarcodesAndTestBarcodePrintQuality(barcodeImage)   
    		End Using   
    	End Sub   
       
    	''' <summary>   
    	''' Reads barcodes from image and tests the print quality of 1D barcodes.   
    	''' </summary>   
    	Private Shared Sub ReadBarcodesAndTestBarcodePrintQuality(imageWithBarcodes As Image)   
    		' create the barcode reader   
    		Using reader As New BarcodeReader()   
    			' specify that reader must collect information for quality test   
    			reader.Settings.CollectTestInformation = True   
       
    			' specify that reader must search for Code39 and Code128 barcodes only   
    			reader.Settings.ScanBarcodeTypes = BarcodeType.Code39 Or BarcodeType.Code128   
       
    			' read barcodes   
    			Dim barcodeInfos As IBarcodeInfo() = reader.ReadBarcodes(imageWithBarcodes)   
       
    			' for each found barcode   
    			For i As Integer = 0 To barcodeInfos.Length - 1   
    				' test print quality of barcode using ISO 15416 test   
    				Dim test As New ISO15416QualityTest(DirectCast(barcodeInfos(i), BarcodeInfo1D), imageWithBarcodes)   
       
    				' print results of ISO 15416 test   
       
    				Console.WriteLine(String.Format("[{0}] {1}", barcodeInfos(i).BarcodeType, barcodeInfos(i).Value))   
    				Console.WriteLine(String.Format("Overall symbol grade:            {0} ({1:f2})", test.OverallSymbolGrade, test.OverallSymbolGradeValue))   
    				If test.DifferentDecodedValues Then   
    					Console.WriteLine("Scan profiles has different barcode decode values!")   
    				End If   
    				If test.SymbolComponentQualityTests.Length = 1 Then   
    					Dim qualityTest As ISO15416SymbolComponentQualityTest = test.SymbolComponentQualityTests(0)   
    					Console.WriteLine(String.Format("Scan reflectance profiles:       {0}", qualityTest.ScanReflectanceProfiles.Length))   
    					Console.WriteLine("Scan reflectance profile grades:")   
    					For j As Integer = 0 To qualityTest.ScanReflectanceProfiles.Length - 1   
    						Console.Write(qualityTest.ScanReflectanceProfiles(j).ScanGrade)   
    					Next   
    				Else   
    					For k As Integer = 0 To test.SymbolComponentQualityTests.Length - 1   
    						Console.WriteLine(String.Format("Symbol component:                {0}", k + 1))   
    						Dim qualityTest As ISO15416SymbolComponentQualityTest = test.SymbolComponentQualityTests(k)   
    						Console.WriteLine(String.Format("Scan reflectance profiles:       {0}", qualityTest.ScanReflectanceProfiles.Length))   
    						Console.WriteLine("Scan reflectance profile grades:")   
    						For j As Integer = 0 To qualityTest.ScanReflectanceProfiles.Length - 1   
    							Console.Write(qualityTest.ScanReflectanceProfiles(j).ScanGrade)   
    						Next   
    					Next   
    				End If   
    				Console.WriteLine()   
    				Console.WriteLine()   
    			Next   
    		End Using   
    	End Sub   
       
    End Class
    using System;
    using System.Drawing;
                
    using Vintasoft.Barcode;
    using Vintasoft.Barcode.BarcodeInfo;
    using Vintasoft.Barcode.QualityTests;
                
    /// <summary>
    /// Test that shows how to test the print quality of 1D barcodes.
    /// </summary>
    class ISO15416QualityTestExample
    {
                
        /// <summary>
        /// Runs the test.
        /// </summary>
        public static void Test()
        {
            // load image with barcode from file
            using (Image barcodeImage = Image.FromFile("test1.jpg"))
            {
                // read barcodes from image and test the print quality of 1D barcodes
                ReadBarcodesAndTestBarcodePrintQuality(barcodeImage);
            }
        }
        
        /// <summary>
        /// Reads barcodes from image and tests the print quality of 1D barcodes.
        /// </summary>
        static void ReadBarcodesAndTestBarcodePrintQuality(Image imageWithBarcodes)
        {
            // create the barcode reader
            using (BarcodeReader reader = new BarcodeReader())
            {
                // specify that reader must collect information for quality test
                reader.Settings.CollectTestInformation = true;
                
                // specify that reader must search for Code39 and Code128 barcodes only
                reader.Settings.ScanBarcodeTypes = BarcodeType.Code39 | BarcodeType.Code128;
                
                // read barcodes
                IBarcodeInfo[] barcodeInfos = reader.ReadBarcodes(imageWithBarcodes);
                
                // for each found barcode
                for (int i = 0; i < barcodeInfos.Length; i++)
                {
                    // test print quality of barcode using ISO 15416 test
                    ISO15416QualityTest test =
                        new ISO15416QualityTest((BarcodeInfo1D)barcodeInfos[i], imageWithBarcodes);
                
                    // print results of ISO 15416 test
                
                    Console.WriteLine(string.Format("[{0}] {1}",
                        barcodeInfos[i].BarcodeType, barcodeInfos[i].Value));
                    Console.WriteLine(string.Format("Overall symbol grade:            {0} ({1:f2})",
                        test.OverallSymbolGrade, test.OverallSymbolGradeValue));
                    if (test.DifferentDecodedValues)
                        Console.WriteLine("Scan profiles has different barcode decode values!");
                    if (test.SymbolComponentQualityTests.Length == 1)
                    {
                        ISO15416SymbolComponentQualityTest qualityTest = test.SymbolComponentQualityTests[0];
                        Console.WriteLine(string.Format("Scan reflectance profiles:       {0}",
                            qualityTest.ScanReflectanceProfiles.Length));
                        Console.WriteLine("Scan reflectance profile grades:");
                        for (int j = 0; j < qualityTest.ScanReflectanceProfiles.Length; j++)
                            Console.Write(qualityTest.ScanReflectanceProfiles[j].ScanGrade);
                    }
                    else
                    {
                        for (int k = 0; k < test.SymbolComponentQualityTests.Length; k++)
                        {
                            Console.WriteLine(string.Format("Symbol component:                {0}", k + 1));
                            ISO15416SymbolComponentQualityTest qualityTest = test.SymbolComponentQualityTests[k];
                            Console.WriteLine(string.Format("Scan reflectance profiles:       {0}",
                                qualityTest.ScanReflectanceProfiles.Length));
                            Console.WriteLine("Scan reflectance profile grades:");
                            for (int j = 0; j < qualityTest.ScanReflectanceProfiles.Length; j++)
                                Console.Write(qualityTest.ScanReflectanceProfiles[j].ScanGrade);
                        }
                    }
                    Console.WriteLine();
                    Console.WriteLine();
                }
            }
        }
                
    }
    Inheritance Hierarchy

    System.Object
       Vintasoft.Barcode.QualityTests.ISO15416QualityTest

    Requirements

    Target Platforms: Windows 8, Windows 7, Windows Vista, Windows XP, Windows Server 2012, Windows Server 2008, Windows Server 2003

    See Also