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
 
# 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
 
# 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}")