cvb_code_reader/CVBpy/CodeReading

This example program is located in your CVB installation under %CVB%Tutorial/cvb_code_reader/CVBpy/CodeReading.

code_reading.py:

# @brief Example, that demonstrates how to decode Data Matrix codes in an image.
 
import os
import cvb
import cvb.code_reader
 
def enable_additional_codes(decoder):
    for symbology in (
        cvb.code_reader.Symbology.AustraliaPost,
        cvb.code_reader.Symbology.Code11,
        cvb.code_reader.Symbology.Code128,
        cvb.code_reader.Symbology.Code32,
        cvb.code_reader.Symbology.Code39,
        cvb.code_reader.Symbology.Code93,
        cvb.code_reader.Symbology.DutchPost,
        cvb.code_reader.Symbology.Ean13,
        cvb.code_reader.Symbology.Ean8,
        cvb.code_reader.Symbology.GS1DataBar14,
        cvb.code_reader.Symbology.GS1DataBarExpanded,
        cvb.code_reader.Symbology.GS1DataBarExpandedStacked,
        cvb.code_reader.Symbology.GS1DataBarLimited,
        cvb.code_reader.Symbology.GS1DataBarStacked,
        cvb.code_reader.Symbology.Interleaved2of5,
        cvb.code_reader.Symbology.MicroPdf417,
        cvb.code_reader.Symbology.MicroQR,
        cvb.code_reader.Symbology.Pdf417,
        cvb.code_reader.Symbology.Pharmacode,
        cvb.code_reader.Symbology.QR,
        cvb.code_reader.Symbology.RoyalMail,
        cvb.code_reader.Symbology.UpcA,
        cvb.code_reader.Symbology.UpcE,
        cvb.code_reader.Symbology.UspsIntelligentMail,
    ):
        decoder.config(symbology).enable()
 
if __name__ == "__main__":
    # Create a decoder.
    decoder = cvb.code_reader.Decoder.create()
 
    # Retrieve the configuration object for a specific symbology.
    config = decoder.config(cvb.code_reader.Symbology.DataMatrix)
 
    # Enable decoding for the selected symbology.
    config.enable()
 
    # Configure additional parameters (optional).
    config.polarity = cvb.code_reader.Polarity.DarkOnLight
 
    # Alternatively, the configuration can be performed in a more concise manner:
    #decoder.config(cvb.code_reader.Symbology.DataMatrix).enable().polarity = cvb.code_reader.Polarity.DarkOnLight
 
    # Enable additional codes (optional).
    enable_additional_codes(decoder)
 
    # Load the image and decode.
    image_file = os.path.join(cvb.install_path(), "tutorial", "CodeReader", "Images", "DataMat", "Surrounded.bmp")
    image = cvb.Image.load(image_file)                       
    results = decoder.execute(image.planes[0])
 
    # Display results.
    print(f"{len(results)} code(s) found.")
    for result in results:
        print(f"{result.data}")