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# BNNS.CropResizeLayer

A layer object that wraps a crop-resize filter and manages its deinitialization.

```
class CropResizeLayer
```

## Topics

### Creating a Crop-Resize Layer

[`init(coordinatesAreNormalized: Bool, spatialScale: Float, extrapolationValue: Float, samplingMode: BNNS.CropResizeLayer.LinearSamplingMode, boxCoordinateMode: BNNS.CropResizeLayer.BoxCoordinateMode)`](/documentation/Accelerate/BNNS/CropResizeLayer/init(coordinatesAreNormalized:spatialScale:extrapolationValue:samplingMode:boxCoordinateMode:))

Returns a new crop-resize layer.

### Applying a Crop-Resize Layer

[`func apply(input: BNNSNDArrayDescriptor, regionOfInterest: BNNSNDArrayDescriptor, output: BNNSNDArrayDescriptor, filterParameters: BNNSFilterParameters?) throws`](/documentation/Accelerate/BNNS/CropResizeLayer/apply(input:regionOfInterest:output:filterParameters:))

Applies the layer to a set of input objects, writing the result to a set of output objects.

[`func applyBackward(regionOfInterest: BNNSNDArrayDescriptor, outputGradient: BNNSNDArrayDescriptor, generatingInputGradient: BNNSNDArrayDescriptor, filterParameters: BNNSFilterParameters?) throws`](/documentation/Accelerate/BNNS/CropResizeLayer/applyBackward(regionOfInterest:outputGradient:generatingInputGradient:filterParameters:))

Applies a crop-resize filter backward to generate an input gradient.

### Suporting Types

[`enum BoxCoordinateMode`](/documentation/Accelerate/BNNS/CropResizeLayer/BoxCoordinateMode)

An enumeration that defines the convention for specifying the bounding box coordinates of a 2D image.

[`enum LinearSamplingMode`](/documentation/Accelerate/BNNS/CropResizeLayer/LinearSamplingMode)

An enumeration that specifies the interpolation sampling mode.


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