Example 1: Use barcode reader functionality:

The sample is embedded in the following Scorpion Profile:

• Barcode Reading - T1 - 1D BarCode (10MB)

1. Place this code into Central Start:

# Create bar code reader instance.
from BarcodeReader import GetBarcodeReader
global reader
reader = GetBarcodeReader()
from BarcodeReader import GetBarcodeReader

2. Create PythonScript tool in toolbox and paste this code:

# This gets image number, which is set to current tool.
reader.general['ImageIndex'] = GetTool(GetCurSource()).imageNo

# Setup visualisation options.
reader.visualisation['Frame'].enabled = True
reader.visualisation['Frame'].penWidth = 3
reader.visualisation['Code'].enabled = True
reader.visualisation['Code'].fontSize = 12
reader.visualisation['Code'].backColor = 'Black'
reader.visualisation['Code'].textStyle = 1

# Setup barcode type for searching.
reader.option['ReadCode25'].enabled = False
reader.option['ReadCode39'].enabled = False
#reader.option['ReadCode93'].enabled = False
reader.option['ReadCode128'].enabled = False
reader.option['ReadShortCode128'].enabled = False
reader.option['ReadCodabar'].enabled = False
reader.option['ReadDatabar'].enabled = FalseCentral Start
reader.option['ReadDataMatrix'].enabled = True
reader.option['ReadEAN8'].enabled = False
reader.option['ReadEAN13'].enabled = False
reader.option['ReadPatchCodes'].enabled = False
reader.option['ReadMicroPDF417'].enabled = False
reader.option['ReadPDF417'].enabled = False
reader.option['ReadUPCA'].enabled = False
reader.option['ReadUPCE'].enabled = False

# Setup other options.
reader.option['MultipleRead'].enabled = False
reader.option['QuietZoneSize'].value = 0
reader.option['SkewTolerance'].value = 3
reader.option['SkewLineJump'].value = 1
reader.option['LineJump'].value = 1
reader.option['ScanDirection'].value = 15
reader.option['PrefOccurrence'].value = 1
reader.option['AllowDuplicateValues'].value = 0

# Execute reader to perform barcode search.
try:
    reader.Execute()
except Exception, msg:
    pass # No barcode found.

# Print result
print 'Barcodes Count: ', reader.result['Count']
if reader.result['Count'] > 0:
  print 'Barcode: ', reader.result['Code[1]']

Example 2:  Using BaseTool to create a barcodereader component

• Requires Scorpion 8.4.0.482 or higher

The sample is embedded in the following Scorpion Profile:

• Barcode Reading - T5 (2.5MB)

1. Create BaseTool in Toolbox.

2. Create external data in BaseTool.

3. Create data input page and configure it.

4. Place this code into BaseTool init script:

def init(self):
  # use self.name to get this tool instance
  # tool=GetTool(self.name)
  # Python start script goes here

  # Create bar code reader instance
  from BarcodeReader import GetBarcodeReader
  self.reader = GetBarcodeReader()

5. Place this code into BaseTool execute script:

def execute(self,image):
  # use self.name to get this tool instance
  # tool=GetTool(self.name)
  # Return 1 for pass, 0 for fail

  t=GetTool(self.name)
  reader = self.reader

  # Setup visualisation options.
  reader.visualisation['Frame'].enabled = t.getIntValue('Vis_enabled')
  reader.visualisation['Frame'].penWidth = t.getIntValue('Vis_penWidth')
  reader.visualisation['Code'].enabled = t.getIntValue('Vis_code')
  reader.visualisation['Code'].fontSize = t.getIntValue('Vis_fontSize')
  reader.visualisation['Code'].backColor = 'Black'
  reader.visualisation['Code'].textStyle = 1

  # Setup barcode type for searching.
  reader.option['ReadCode25'].enabled = False
  reader.option['ReadCode39'].enabled = False
  #reader.option['ReadCode93'].enabled = False    requires .net2 and v2 of library
  reader.option['ReadCode128'].enabled = False
  reader.option['ReadShortCode128'].enabled = False
  reader.option['ReadCodabar'].enabled = False
  #reader.option['ReadDatabar'].enabled = False   requires and v2 of library
  reader.option['ReadDataMatrix'].enabled = False
  reader.option['ReadEAN8'].enabled = t.getBoolValue('Opt_EAN8')
  reader.option['ReadEAN13'].enabled = t.getBoolValue('Opt_EAN13')
  reader.option['ReadPatchCodes'].enabled = False
  reader.option['ReadMicroPDF417'].enabled = False
  reader.option['ReadPDF417'].enabled = False
  reader.option['ReadUPCA'].enabled = False
  reader.option['ReadUPCE'].enabled = False

  # This gets image number, which is set to current tool.
  reader.general['ImageIndex'] = t.imageNo

  # Setup other options.
  reader.option['MultipleRead'].enabled = False
  reader.option['QuietZoneSize'].value = 0
  reader.option['SkewTolerance'].value = t.getFloatValue('Opt_skewTolerance')
  reader.option['SkewLineJump'].value = t.getFloatValue('Opt_skewLineJump')
  reader.option['LineJump'].value = t.getFloatValue('Opt_lineJump')
  reader.option['ScanDirection'].value = t.getFloatValue('Opt_scanDirection')
  reader.option['PrefOccurrence'].value = 1
  reader.option['AllowDuplicateValues'].value = 0

  # Execute reader to perform barcode search.
  try:
    reader.Execute(image)
  except Exception, msg:
    t.setStringValue('StatusText','%s %s'%(Exception, msg))
    print Exception, msg # No barcode found.

  # Set Results
  t.setBoolValue('Pass', reader.result['Count'] > 0)
  t.setIntValue('Count', reader.result['Count'])
  if reader.result['Count'] > 0:
    t.setStringValue('BarCode' , reader.result['Code[1]'])
  else:
    t.setStringValue('BarCode', '-')

  return reader.result['Count'] > 0

NOTE: If BaseTool uses Reference, ROI left upper corner coordinate must be (0, 0). Otherwise BarCode visualization can be incorrect.