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# BNNSDataLayoutConvolutionWeightsOIHW

A constant that represents a 4D array of convolution weights.

```
var BNNSDataLayoutConvolutionWeightsOIHW: BNNSDataLayout { get }
```

## Discussion

The value `(kx ,ky, InChannel, OutChannel)` is at index:

`kx * stride[0] + ky * stride[1] + InChannel * stride[2] + OutChannel * stride[3]`.

- `size[0]` is the convolution kernel width in pixels.
- `size[1]` is the convolution kernel height in pixels.
- `size[2]` is the number of input channels.
- `size[3]` is the number of output channels.

---

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