halcon与C#混合编程（三）数字识别

35:if (openFileDialog1.ShowDialog() == DialogResult.OK) 36:

37: { 38:

39: ImagePath = openFileDialog1.FileName; 40:

41: HD.ReadImage(hWindowControl1.HalconWindow, ImagePath); 42:

43: btnRecognitionNumber.Enabled = true; 44:

45: } 46: } 47:

48:privatevoid btnRecognitionNumber_Click(object sender, EventArgs e) 49: {

50: HD.NumberRecognition();

51: labNumber.Text = HD.hv_Class.ToString(); 52:

53: btnRecognitionNumber.Enabled = false; 54: } 55: } 56:

57://halcon导出的类

58:publicpartialclass HDevelopExport 59: {

60:public HTuple hv_ExpDefaultWinHandle; 61:

62: HObject ho_Image, ho_ImageR, ho_ImageG, ho_ImageB; 63: HObject ho_Regions, ho_Connection, ho_SelectedRegions; 64: 65:

66:// Local control variables

67: HTuple hv_OCRHandle, hv_Confidence; 68:public HTuple hv_Class; 69:

70:publicvoid InitHalcon() 71: {

72:// Default settings used in HDevelop

73: HOperatorSet.SetSystem(\, \); 74: } 75:

76:publicvoid ReadImage(HTuple Window,string ImagePath) 77: {

78: hv_ExpDefaultWinHandle = Window; 79:

80:// Initialize local and output iconic variables 81: HOperatorSet.GenEmptyObj(out ho_Image); 82:

83://读取图片

84: ho_Image.Dispose();

85: HOperatorSet.ReadImage(out ho_Image, ImagePath); 86: HOperatorSet.DispObj(ho_Image, hv_ExpDefaultWinHandle); 87: } 88:

89:publicvoid NumberRecognition() 90: {

91: HOperatorSet.GenEmptyObj(out ho_ImageR); 92: HOperatorSet.GenEmptyObj(out ho_ImageG); 93: HOperatorSet.GenEmptyObj(out ho_ImageB); 94: HOperatorSet.GenEmptyObj(out ho_Regions); 95: HOperatorSet.GenEmptyObj(out ho_Connection);

96: HOperatorSet.GenEmptyObj(out ho_SelectedRegions); 97://图像处理

98: ho_ImageR.Dispose(); 99: ho_ImageG.Dispose(); 100: ho_ImageB.Dispose();

101: HOperatorSet.Decompose3(ho_Image, out ho_ImageR, out ho_ImageG, out ho_ImageB 102: );

103: ho_Regions.Dispose();

104: HOperatorSet.Threshold(ho_ImageG, out ho_Regions, 0, 183);

105: ho_Connection.Dispose();

106: HOperatorSet.Connection(ho_Regions, out ho_Connection); 107:

108: ho_SelectedRegions.Dispose();

109: HOperatorSet.SelectShape(ho_Connection, out ho_SelectedRegions, \, \, 110: 1987.72, 7500); 111:

112: HOperatorSet.ReadOcrClassMlp(\, out hv_OCRHandle);

113: HOperatorSet.DoOcrMultiClassMlp(ho_SelectedRegions, ho_ImageG, hv_OCRHandle,

114:out hv_Class, out hv_Confidence);

115: 116:

117: ho_Image.Dispose(); 118: ho_ImageR.Dispose(); 119: ho_ImageG.Dispose(); 120: ho_ImageB.Dispose(); 121: ho_Regions.Dispose(); 122: ho_Connection.Dispose();

123: ho_SelectedRegions.Dispose(); 124:

125: } 126: 127: } 128: }

运行结果：