TopCoW — parity/debug probe

Fixed patch/reference probe for ResEncUNet kernel and ABI parity. Product validation is the worker upload path with real CTA/MRA data. 62.5 M params, 20 residual blocks across 5 encoder stages [1, 3, 4, 6, 6], anisotropic deepest stride (1, 2, 2). · worker product path v2 · legacy full-volume page · DentalSegmentator parity/debug

Architectural note: TopCoW uses a different block structure than DentalSegmentator. Each encoder stage contains several residual blocks (h = lrelu(norm2(conv2(lrelu(norm1(conv1(x))))) + skip(x))) where skip is a 1×1×1 conv + InstanceNorm projection when channels or spatial dimensions change, or identity otherwise. This is the "ResEncUNet" variant in nnU-Net V2 — served by our resenc_model.c runtime rather than unet_model.c.

Log

Axial slice preview (class argmax)

Slice z: 16

Input (X)

WASM output argmax

PyTorch reference argmax