---
title: MPSCNNLocalContrastNormalizationGradient
framework: metalperformanceshaders
role: symbol
role_heading: Class
path: metalperformanceshaders/mpscnnlocalcontrastnormalizationgradient
---

# MPSCNNLocalContrastNormalizationGradient

A gradient local-contrast normalization kernel.

## Declaration

```swift
class MPSCNNLocalContrastNormalizationGradient
```

## Topics

### Initializers

- [init(coder:device:)](metalperformanceshaders/mpscnnlocalcontrastnormalizationgradient/init(coder:device:).md)
- [init(device:kernelWidth:kernelHeight:)](metalperformanceshaders/mpscnnlocalcontrastnormalizationgradient/init(device:kernelwidth:kernelheight:).md)

### Instance Properties

- [alpha](metalperformanceshaders/mpscnnlocalcontrastnormalizationgradient/alpha.md)
- [beta](metalperformanceshaders/mpscnnlocalcontrastnormalizationgradient/beta.md)
- [delta](metalperformanceshaders/mpscnnlocalcontrastnormalizationgradient/delta.md)
- [p0](metalperformanceshaders/mpscnnlocalcontrastnormalizationgradient/p0.md)
- [pm](metalperformanceshaders/mpscnnlocalcontrastnormalizationgradient/pm.md)
- [ps](metalperformanceshaders/mpscnnlocalcontrastnormalizationgradient/ps.md)

## Relationships

### Inherits From

- [MPSCNNGradientKernel](metalperformanceshaders/mpscnngradientkernel.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCoding](foundation/nscoding.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [NSSecureCoding](foundation/nssecurecoding.md)

## See Also

### Normalization Layers

- [MPSCNNCrossChannelNormalization](metalperformanceshaders/mpscnncrosschannelnormalization.md)
- [MPSCNNCrossChannelNormalizationGradient](metalperformanceshaders/mpscnncrosschannelnormalizationgradient.md)
- [MPSCNNLocalContrastNormalization](metalperformanceshaders/mpscnnlocalcontrastnormalization.md)
- [MPSCNNSpatialNormalization](metalperformanceshaders/mpscnnspatialnormalization.md)
- [MPSCNNSpatialNormalizationGradient](metalperformanceshaders/mpscnnspatialnormalizationgradient.md)
- [MPSCNNBatchNormalization](metalperformanceshaders/mpscnnbatchnormalization.md)
- [MPSCNNBatchNormalizationGradient](metalperformanceshaders/mpscnnbatchnormalizationgradient.md)
- [MPSCNNBatchNormalizationState](metalperformanceshaders/mpscnnbatchnormalizationstate.md)
- [MPSCNNNormalizationMeanAndVarianceState](metalperformanceshaders/mpscnnnormalizationmeanandvariancestate.md)
- [MPSCNNBatchNormalizationStatistics](metalperformanceshaders/mpscnnbatchnormalizationstatistics.md)
- [MPSCNNBatchNormalizationStatisticsGradient](metalperformanceshaders/mpscnnbatchnormalizationstatisticsgradient.md)
- [MPSCNNInstanceNormalization](metalperformanceshaders/mpscnninstancenormalization.md)
- [MPSCNNInstanceNormalizationGradient](metalperformanceshaders/mpscnninstancenormalizationgradient.md)
- [MPSCNNInstanceNormalizationGradientState](metalperformanceshaders/mpscnninstancenormalizationgradientstate.md)
- [MPSCNNNormalizationGammaAndBetaState](metalperformanceshaders/mpscnnnormalizationgammaandbetastate.md)