ImageCrop

collectra.ImageCrop represents a region of an image. It stores the source image path, parent reference, and normalized x_center, y_center, width_relative, and height_relative coordinates. Detection and line-detection tasks produce crops; OCR and classifiers can consume them.

Commands

• extract INPUTS...: export the cropped, oriented regions as JPEG files. --output defaults to extracted.

• evaluate PREDICTED_FOLDER GOLD_FOLDER: compare crop bounding boxes using intersection-over-union, with the shared evaluation options.

For a crop node named lines:

collectra --pipeline pipeline.yaml artefact lines extract results/*.collectra --output extracted-lines
collectra --pipeline pipeline.yaml artefact lines evaluate predictions gold --threshold 0.5 --output line-metrics.csv
collectra --pipeline pipeline.yaml artefact lines extract --help
collectra --pipeline pipeline.yaml artefact lines evaluate --help

Pass result directories containing the relevant artefacts, not raw image files. The GUI can display and edit boxes over their source image.