MPSCNNUpsampling(3)

NAME
MPSCNNUpsampling

SYNOPSIS

#import <MPSCNNUpsampling.h>

Inherits MPSCNNKernel.

Inherited by MPSCNNUpsamplingBilinear, and MPSCNNUpsamplingNearest.

  Instance Methods
(nonnull instancetype) - initWithDevice:

  Properties
double scaleFactorX
double scaleFactorY
BOOL alignCorners

  Additional Inherited Members

Detailed Description

This depends on Metal.framework The MPSCNNUpsampling filter can be used to resample an existing MPSImage using a different sampling frequency for the x and y dimensions with the purpose of enlarging the size of an image.

The number of output feature channels remains the same as the number of input feature channels.

The scaleFactor must be an integer value >= 1. The default value is 1. If scaleFactor == 1, the filter acts as a copy kernel.

Nearest and bilinear variants are supported.

Method Documentation

  - (nonnull instancetype) initWithDevice: (nonnull id< MTLDevice >) device
Standard init with default properties per filter type

Parameters:
    device The device that the filter will be used on. May not be NULL.

Returns:
    A pointer to the newly initialized object. This will fail, returning nil if the device is not supported. Devices must be MTLFeatureSet_iOS_GPUFamily2_v1 or later.

Reimplemented from MPSCNNKernel.

Property Documentation

  - alignCorners [read], [nonatomic], [assign]
If YES, the centers of the 4 corner pixels of the input and output regions are aligned, preserving the values at the corner pixels. The default is NO.

  - scaleFactorX [read], [nonatomic], [assign]
The upsampling scale factor for the x dimension. The default value is 1.

  - scaleFactorY [read], [nonatomic], [assign]
The upsampling scale factor for the y dimension. The default value is 1.

Author

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