VintaSoft Barcode .NET SDK 15.0: Руководство для .NET разработчика
Vintasoft.Barcode.QualityTests Namespace / ISO15415QualityTest Class
    Класс ISO15415QualityTest
    В этом разделе
    Тест качества печати штрих-кодов ISO/IEC 15415 для двумерных штрих-кодов.
    Объектная модель
    BarcodeInfo2D ISO15416QualityTest ISO15416QualityTest ISO15416QualityTest ISO15416QualityTest ISO15415QualityTest
    Синтаксис
    'Declaration
    
    Public Class ISO15415QualityTest
    
    
    public class ISO15415QualityTest
    
    
    public __gc class ISO15415QualityTest
    
    
    public ref class ISO15415QualityTest
    
    
    Ремарки

    Тест можно использовать для проверки качества печати двумерных матричных штрих-кодов (Aztec, DataMatrix, QR Code, Micro QR Code, Han Xin Code). Алгоритм теста основан на стандарте ISO/IEC 15415. Тест позволяет оценить качество печати штрих-кода по следующим параметрам:


    Пример

    Вот пример, который демонстрирует как выполнить проверку качества печати матричных 2D штрих-кодов (Aztec, DataMatrix, QR, MicroQR и Han Xin Code) и многострочных 2D штрих-кодов (PDF417, PDF417Compact и MicroPDF417):

       
       
    Imports Vintasoft.Imaging   
       
    Imports Vintasoft.Barcode   
    Imports Vintasoft.Barcode.BarcodeInfo   
    Imports Vintasoft.Barcode.QualityTests   
       
    ''' <summary>
    ''' Test that shows how to test the print quality of matrix 2D barcodes
    ''' (Aztec, DataMatrix, Han Xin Code, QR and MicroQR).
    ''' </summary>
    Class ISO15415QualityTestMatrixExample   
       
        ''' <summary>
        ''' Runs the test.
        ''' </summary>
        Public Shared Sub Test()   
            ' load image with barcode from file
            Using barcodeImage As VintasoftBitmap = ImageCodecs.[Default].Decode("test1.jpg")   
                ' read barcodes from image and test the print quality of 2D barcodes
                ReadBarcodesAndTestBarcodePrintQuality(barcodeImage)   
            End Using   
        End Sub   
       
        ''' <summary>
        ''' Reads barcodes from image and tests the print quality of 2D barcodes.
        ''' </summary>
        Public Shared Sub ReadBarcodesAndTestBarcodePrintQuality(imageWithBarcodes As VintasoftBitmap)   
            ' 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 Aztec, DataMatrix, Han Xin Code, QR and MicroQR barcodes only
                reader.Settings.ScanBarcodeTypes = BarcodeType.Aztec Or BarcodeType.DataMatrix Or BarcodeType.QR Or BarcodeType.MicroQR Or BarcodeType.HanXinCode   
       
                ' 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 15415 test
                    Dim test As New ISO15415QualityTest()   
                    test.CalculateGrades(DirectCast(barcodeInfos(i), BarcodeInfo2D), imageWithBarcodes)   
       
                    ' print results of ISO 15415 test
       
                    Console.WriteLine(String.Format("[{0}] {1}", barcodeInfos(i).BarcodeType, barcodeInfos(i).Value))   
                    Console.WriteLine(String.Format("Decode                                  : {0}", GradeToString(test.DecodeGrade)))   
                    Console.WriteLine(String.Format("Unused error correction                 : {0} ({1}%)", GradeToString(test.UnusedErrorCorrectionGrade), test.UnusedErrorCorrection))   
                    Console.WriteLine(String.Format("Symbol contrast                         : {0} ({1}%)", GradeToString(test.SymbolContrastGrade), test.SymbolContrast))   
                    Console.WriteLine(String.Format("Axial nonuniformity                     : {0} ({1})", GradeToString(test.AxialNonuniformityGrade), test.AxialNonuniformity))   
                    Console.WriteLine(String.Format("Grid nonuniformity                      : {0} ({1} cell)", GradeToString(test.GridNonuniformityGrade), test.GridNonuniformity))   
                    Console.WriteLine(String.Format("Modulation                              : {0}", GradeToString(test.ModulationGrade)))   
                    Console.WriteLine(String.Format("Reflectance margin                      : {0}", GradeToString(test.ReflectanceMarginGrade)))   
                    Console.WriteLine(String.Format("Fixed pattern damage                    : {0}", GradeToString(test.FixedPatternDamageGrade)))   
                    For Each name As String In test.AdditionalGrades.Keys   
                        Console.WriteLine(String.Format("{0}: {1}", name.PadRight(40, " "C), GradeToString(test.AdditionalGrades(name))))   
                    Next   
                    If test.QuietZone >= 0 Then   
                        Console.WriteLine(String.Format("Quiet zone                              : {0} ({1} %)", GradeToString(test.QuietZoneGrade), test.QuietZone))   
                    End If   
                    Console.WriteLine(String.Format("Distortion angle (informative)          : {0}�", test.DistortionAngle))   
                    Console.WriteLine(String.Format("-------------Scan grade                 : {0}", GradeToString(test.ScanGrade)))   
                    Console.WriteLine()   
                Next   
            End Using   
        End Sub   
       
        ''' <summary>
        ''' Converts ISO15415 quality grade into string value.
        ''' </summary>
        Private Shared Function GradeToString(grade As ISO15415QualityGrade) As String   
            Return String.Format("{0}({1})", CInt(grade).ToString(), grade)   
        End Function   
       
    End Class
    
    
    
    using System;
    
    using Vintasoft.Imaging;
    
    using Vintasoft.Barcode;
    using Vintasoft.Barcode.BarcodeInfo;
    using Vintasoft.Barcode.QualityTests;
    
    /// <summary>
    /// Test that shows how to test the print quality of multi-row 2D barcodes
    /// (PDF417, PDF417Compact and MicroPDF417).
    /// </summary>
    class ISO15415QualityTestMultiRowExample
    {
    
        /// <summary>
        /// Runs the test.
        /// </summary>
        public static void Test()
        {
            // load image with barcode from file
            using (VintasoftBitmap barcodeImage = ImageCodecs.Default.Decode("test1.jpg"))
            {
                // read barcodes from image and test the print quality of 2D barcodes
                ReadBarcodesAndTestBarcodePrintQuality(barcodeImage);
            }
        }
        
        /// <summary>
        /// Reads barcodes from image and tests the print quality of 2D barcodes.
        /// </summary>
        /// <param name="imageWithBarcodes"></param>
        public static void ReadBarcodesAndTestBarcodePrintQuality(VintasoftBitmap 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 PDF417, PDF417Compact and MicroPDF417 barcodes only
                reader.Settings.ScanBarcodeTypes =
                    BarcodeType.PDF417 | BarcodeType.PDF417Compact | BarcodeType.MicroPDF417;
    
                // 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 15415 test
                    ISO15415QualityTest test = new ISO15415QualityTest();
                    test.CalculateGrades((BarcodeInfo2D)barcodeInfos[i], imageWithBarcodes);
    
                    // print results of ISO 15415 test
    
                    Console.WriteLine(string.Format("[{0}] {1}",
                        barcodeInfos[i].BarcodeType, barcodeInfos[i].Value));
                    Console.WriteLine(string.Format("Decode                 : {0}",
                        GradeToString(test.DecodeGrade)));
                    Console.WriteLine(string.Format("Unused error correction: {0} ({1}%)",
                        GradeToString(test.UnusedErrorCorrectionGrade), test.UnusedErrorCorrection));
                    if (test.StartPatternTestGrade != ISO15415QualityGrade.Unavailable)
                        Console.WriteLine(string.Format("Start pattern test:      {0}",
                            GradeToString(test.StartPatternTestGrade), test.StartPatternTestGrade));
                    if (test.CenterPatternTestGrade != ISO15415QualityGrade.Unavailable)
                        Console.WriteLine(string.Format("Center pattern test:     {0}",
                            GradeToString(test.CenterPatternTestGrade), test.CenterPatternTest));
                    if (test.CenterPatternTestGrade != ISO15415QualityGrade.Unavailable)
                        Console.WriteLine(string.Format("Stop pattern test:       {0}",
                            GradeToString(test.CenterPatternTestGrade), test.CenterPatternTestGrade));
                    Console.WriteLine(string.Format("Codeword yield:          {0}",
                        GradeToString(test.CodewordYieldGrade), test.CodewordYieldGrade));
                    Console.WriteLine(string.Format("Codeword print quality:  {0}",
                        GradeToString(test.CodewordPrintQualityGrade), test.CodewordPrintQualityGrade));
                    if (test.QuietZone >= 0)
                        Console.WriteLine(string.Format("Quiet zone:              {0} ({1} %)",
                            GradeToString(test.QuietZoneGrade), test.QuietZone));
                    Console.WriteLine(string.Format("Distortion angle:        {0}°",
                        test.DistortionAngle));
                    Console.WriteLine(string.Format("-------------Scan grade: {0}",
                        GradeToString(test.ScanGrade)));
                    Console.WriteLine();
                }
            }
        }
    
        /// <summary>
        /// Converts ISO15415 quality grade into string value.
        /// </summary>
        static string GradeToString(ISO15415QualityGrade grade)
        {
            return string.Format("{0}({1})", ((int)grade).ToString(), grade);
        }
    
    }
    
    

    Иерархия наследования

    System.Object
       Vintasoft.Barcode.QualityTests.ISO15415QualityTest

    Требования

    Целевые платформы: .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

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