vmedian3d(1) General Commands Manual vmedian3d(1)NAME
vmedian3d -
vmedian3d - 3D median filter
SYNOPSIS Detailed Description
vmedian3d - 3D median filter
Description
3D median filter
Usage
vmedian3d
Parameters:
-in input image
-out output image
-dim kernel size (must be an odd integer). Default: 3
Examples
Known bugs
none.
Author:
G.Lohmann, MPI-CBS, 2004
Author
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VIA - Volumetric Image Analysis Fri Feb 17 2012 vmedian3d(1)
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MPSImageMedian(3) MetalPerformanceShaders.framework MPSImageMedian(3)NAME
MPSImageMedian
SYNOPSIS
#import <MPSImageMedian.h>
Inherits MPSUnaryImageKernel.
Instance Methods
(nonnull instancetype) - initWithDevice:kernelDiameter:
(nullable instancetype) - initWithCoder:device:
(nonnull instancetype) - initWithDevice:
Class Methods
(NSUInteger) + maxKernelDiameter
(NSUInteger) + minKernelDiameter
Properties
NSUInteger kernelDiameter
Additional Inherited Members
Detailed Description
MPSImageMedian.h MetalPerformanceShaders.framework
Copyright:
Copyright (c) 2015 Apple Inc. All rights reserved. MetalPerformanceShaders median filters
The MPSImageMedian applies a median filter to an image. A median filter finds the median color value for each channel within a
kernelDiameter x kernelDiameter window surrounding the pixel of interest. It is a common means of noise reduction and also as a smoothing
filter with edge preserving qualities.
NOTE: The MPSImageMedian filter currently only supports images with <= 8 bits/channel.
Method Documentation
- (nullable instancetype) initWithCoder: (NSCoder *__nonnull) aDecoder(nonnull id< MTLDevice >) device
NSSecureCoding compatability While the standard NSSecureCoding/NSCoding method -initWithCoder: should work, since the file can't know
which device your data is allocated on, we have to guess and may guess incorrectly. To avoid that problem, use initWithCoder:device
instead.
Parameters:
aDecoder The NSCoder subclass with your serialized MPSKernel
device The MTLDevice on which to make the MPSKernel
Returns:
A new MPSKernel object, or nil if failure.
Reimplemented from MPSUnaryImageKernel.
- (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 MPSUnaryImageKernel.
- (nonnull instancetype) initWithDevice: (nonnull id< MTLDevice >) device(NSUInteger) kernelDiameter
Initialize a filter for a particular kernel size and device
Parameters:
device The device the filter will run on
kernelDiameter Diameter of the median filter. Must be an odd number.
Returns:
A valid object or nil, if failure.
+ (NSUInteger) maxKernelDiameter
The maximum diameter in pixels of the filter window supported by the median filter.
+ (NSUInteger) minKernelDiameter
The minimum diameter in pixels of the filter window supported by the median filter.
Property Documentation
- kernelDiameter [read], [nonatomic], [assign]
The diameter in pixels of the filter window. The median filter is applied to a kernelDiameter x kernelDiameter window of pixels centered
on the corresponding source pixel for each destination pixel. The kernel diameter must be an odd number.
Author
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Version MetalPerformanceShaders-100 Thu Feb 8 2018 MPSImageMedian(3)