Debug Tools¶

ANPR2MQTT has additional command line options to help debug file system integration or OCR.

OCR¶

This will load the image, run the OCR on the (optionally cropped and inverted image) and report the value. It will ignore any yaml config, though will respect environment variables. This can be useful for quick feedback cycle with a local image and bounding boxes.

 uv run tools ocr_file 20241230152519495_N74DYX_VEHICLE_DETECTION.jpg

The default configuration can be overridden from the command line, and a specific OCR field configured

uv run tools ocr_file fixtures/20250602103045407_B4DM3N_VEHICLE_DETECTION.jpg --ocr.crop.x 850 --ocr.crop.y 0 --ocr.crop.h 200 --ocr.crop.w 400 --ocr.invert False

If there are no events defined in the configuration, then the image will be looked for in the current working directory.

Directory Listing¶

This will list the images in the current directory that match the ANPR image regular expression

uv run tools list_dir

Like the OCR example, this also allows any of the event config to be changed, in this example trying out a regular expression to match the file

uv run tools list_dir --event.watch_path /ftp/Driveway --event.image_name_re '(?P<dt>[0-9]{17})_(?P<target>[A-Z0-9]+)_(?P<event>VEHICLE_DETECTION)\.(?P<ext>jpg|png|gif|jpeg)'