costs
module unitrack.costsCost producers and cost-side combinators.
Leaves consume a :class:`~unitrack.data.Tracklets` /
:class:`~unitrack.data.Detections` pair and emit a
:class:`~unitrack.data.CostExpression`. The lower-is-better convention
holds throughout: a cost of ``0`` is a perfect match.
Members
module
- combinatorsCost-side combinators: :class:`Weighted`, :class:`Reduce`, :class:`Sinkhorn`.
- distanceDistance-based :class:`~unitrack.pipeline.CostProducer` leaves.
- galleryGallery (feature-bank) cost — match a detection against a tracklet's history.
- overlapIoU-family :class:`~unitrack.pipeline.CostProducer` leaves.
type
- BiSoftmaxBi-directional softmax cost ``1 - 0.5 * (softmax_cs + softmax_ds)``.
- BoxCIoU``1 - CIoU`` cost over a named bounding-box field (``xyxy`` format).
- BoxGIoU``1 - GIoU`` cost over a named bounding-box field (``xyxy`` format).
- BoxIoU``1 - IoU`` cost over a named bounding-box field (``xyxy`` format).
- CDist``‖a - b‖_p`` distance over a named float-vector field.
- ChamferSymmetric chamfer distance over a fixed-size point-cloud field.
- Cosine``1 - cosine_similarity`` cost over a named float-vector field.
- GalleryCostCosine cost between detections and each tracklet's embedding gallery.
- MahalanobisMahalanobis squared distance ``(a - b)^T Σ^-1 (a - b)``.
- MaskIoU``1 - IoU`` cost over a named boolean mask field.
- RBFRBF-kernel cost ``1 - exp(-gamma * ‖a - b‖²)``.
- ReduceCombine multiple child cost producers via a reduction.
- ReductionReduction method for combining multiple cost matrices.
- SinkhornSoft-OT renormalisation wrapper for the differentiable path.
- WeightedScale a child cost producer's output by a scalar weight.
Source: unitrack/costs/__init__.py:1