Move the slider to change how confident OmniCloudMask must be before a pixel is accepted as clear. Leak: accepted pixels that are actually cloud or shadow. Discard: clear pixels thrown away. Measured on 960 expert-labelled Sentinel-2 test scenes.
Curves sweep each product's own threshold on the CloudSEN12+ test split (overlap-screened). The recommended point was chosen on the validation split. Source: cloudmask-acceptance-audit (results/curves_test.csv).