Enum GatingDistanceMetric 

pub enum GatingDistanceMetric {
    Gaussian,
    Mahalanobis,
}

Distance metric used by ConstantVelocityXYAHModel2::gating_distance.

Mahalanobis accounts for the current state uncertainty and is the theoretically correct gating criterion; Gaussian (squared Euclidean) is faster but scale-dependent. In the current ByteTrack integration only the IoU-based cost matrix is used for assignment; this enum is available for future association strategies that want a filter-based gate.

Variants

Gaussian

Squared Euclidean distance (no covariance weighting).

Mahalanobis

Mahalanobis distance — normalised by the projected state covariance.