Table 2 Key hyperparameters (default unless stated)

From: HemaContour: explicit parametric contour learning for robust ICH segmentation on non-contrast CT

Setting

Value

Backbone

U - Net (light), ConvNeXt-UNet (ablation)

Spline degree/control points

d = 3 (cubic)/K = 64

Snake iterations/step size

T = 5/η = 0.1

Loss weights (λ1, λ2, λ3, λ4)

(1.0, 0.5, 0.1, 0.1)

Optimizer/schedule

AdamW37/Cosine w/ restarts38

Base lr/weight decay

3 × 10−4/5 × 10−4

Epochs/batch (slices/GPU)

200/32 (accum. to 128 global)

Mixed precision

AMP35

TTA

flip (2 views); EMA enabled