ai.onnx.SpaceToDepth

ai.onnx · standard ONNX operator · ONNX opset ≥ 13

Description

Rearranges blocks of spatial data into depth by moving values from the height and width dimensions into the channel dimension. An NCHW input of shape [N, C, H, W] produces an output of shape [N, C * blocksize * blocksize, H / blocksize, W / blocksize].

See the ONNX SpaceToDepth spec for the reference semantics.

Inputs

Outputs

Attributes

Attributes and default values (overridable per request):

Type constraints

Files

• metadata.json — kernel metadata (id, digests, provenance)
• manifest.json — the op contract (source of truth)
• test.json — correctness cases
• bench.json — benchmark + tuning cases
• space-depth-permute.wgsl.jinja

Use with @huggingface/kernels

The loader derives every required output's shape and logical dtype from the manifest contract and this call. It then allocates the result tensors automatically.

The version: 1 option selects the published kernel contract; it is independent of any operator opset, contrib since_version, or model version.

Replace each *Data placeholder with a typed array containing the corresponding input data.

import { getKernel } from "@huggingface/kernels";

const kernel = await getKernel("webgpu-kernels/ai.onnx.SpaceToDepth", { version: 1 });
const { output } = await kernel({ input: { data: inputData, shape: [1, 1, 2, 4] } }, {
  attrs: { blocksize: 2 },
});