Selecting a Model Variant

SKeMa provides three model variants that trade off complexity against geographic applicability. Use the --rev flag (short for --revision) to select which one to run.

Variants at a Glance

Revision	Input data	Applicable area	When to use
20260414	Sentinel-2 bands only	Anywhere	Best starting point; no auxiliary data needed
20260414-full	Bands + bathymetry + substrate	Coastal BC only	Higher accuracy in BC when auxiliary data is available
20260414-ensemble	Bands + bathymetry + substrate	Coastal BC only	Most accurate in BC; combines both approaches

Geographic restriction for full and ensemble variants

The full and ensemble variants rely on bathymetry and substrate rasters covering coastal British Columbia. They are not applicable to areas outside of BC. Use the bands-only variant (20260414) for study areas elsewhere.

Checking Available Revisions

To list all revisions available for a model at any time:

hab revisions kelp-skema

Running a Specific Variant

Pass the revision to --rev along with the path to your .SAFE folder:

Bands only (default)Full (BC only)Ensemble (BC only)

hab segment \
    --model kelp-skema \
    --rev 20260414 \
    --input /path/to/scene.SAFE \
    --output kelp_output.tif

This is also the result of omitting --rev entirely, since 20260414 is the latest revision and Habitat-Mapper defaults to latest.

hab segment \
    --model kelp-skema \
    --rev 20260414-full \
    --input /path/to/scene.SAFE \
    --output kelp_output.tif

hab segment \
    --model kelp-skema \
    --rev 20260414-ensemble \
    --input /path/to/scene.SAFE \
    --output kelp_output.tif

Next Step

Once you have your output raster, continue to Post-Processing to vectorize the result and optionally remove eelgrass false positives.