---
title: MPSImageThresholdToZeroInverse
framework: metalperformanceshaders
role: symbol
role_heading: Class
path: metalperformanceshaders/mpsimagethresholdtozeroinverse
---

# MPSImageThresholdToZeroInverse

A filter that returns 0 for each pixel with a value greater than a specified threshold or the original value otherwise.

## Declaration

```swift
class MPSImageThresholdToZeroInverse
```

## Overview

Overview An MPSImageThresholdToZeroInverse filter converts a single channel image to a binary image. If the input image is not a single channel image, the function first converts the input image into a single channel luminance image using the linear gray color transform, and then it applies the threshold. The following listing shows the threshold to zero inverse function. Listing 1. Threshold to zero inverse function destinationPixelValue = sourcePixelValue > thresholdValue ? 0 : sourcePixelValue

## Topics

### Initializers

- [init(coder:device:)](metalperformanceshaders/mpsimagethresholdtozeroinverse/init(coder:device:).md)

### New Methods

- [init(device:thresholdValue:linearGrayColorTransform:)](metalperformanceshaders/mpsimagethresholdtozeroinverse/init(device:thresholdvalue:lineargraycolortransform:).md)

### Properties

- [thresholdValue](metalperformanceshaders/mpsimagethresholdtozeroinverse/thresholdvalue.md)
- [transform](metalperformanceshaders/mpsimagethresholdtozeroinverse/transform.md)

## Relationships

### Inherits From

- [MPSUnaryImageKernel](metalperformanceshaders/mpsunaryimagekernel.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

### Image Threshold Filters

- [MPSImageThresholdBinary](metalperformanceshaders/mpsimagethresholdbinary.md)
- [MPSImageThresholdBinaryInverse](metalperformanceshaders/mpsimagethresholdbinaryinverse.md)
- [MPSImageThresholdToZero](metalperformanceshaders/mpsimagethresholdtozero.md)
- [MPSImageThresholdTruncate](metalperformanceshaders/mpsimagethresholdtruncate.md)