vbinarize(1) General Commands Manual vbinarize(1)NAME
vbinarize -
vbinarize -- threshold an image
SYNOPSIS Detailed Description
vbinarize -- threshold an image
Description
vbinarize thresholds an image, and produces a binary output image.
Usage
vbinarize
Parameters:
-in input image
-out output image
-min lower threshold, values below <min> are set to zero.
-max upper threshold, values above <max> are set to zero.
Examples
Known bugs
none.
Author:
G.Lohmann, MPI-CBS, 2004
Author
Generated automatically by Doxygen for VIA - Volumetric Image Analysis from the source code.
VIA - Volumetric Image Analysis Fri Feb 17 2012 vbinarize(1)
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MPSImageThresholdToZero(3) MetalPerformanceShaders.framework MPSImageThresholdToZero(3)NAME
MPSImageThresholdToZero
SYNOPSIS
#import <MPSImageThreshold.h>
Inherits MPSUnaryImageKernel.
Instance Methods
(nonnull instancetype) - initWithDevice:thresholdValue:linearGrayColorTransform:
(nonnull instancetype) - initWithDevice:
(nullable instancetype) - initWithCoder:device:
Properties
float thresholdValue
const float * transform
Additional Inherited Members
Detailed Description
The MPSImageThresholdToZero filter applies a fixed-level threshold to each pixel in the image. The threshold functions convert a single
channel image to a binary image. If the input image is not a single channel image, convert the inputimage to a single channel luminance
image using the linearGrayColorTransform and then apply the threshold. The ThresholdToZero function is: destinationPixelValue =
sourcePixelValue > thresholdValue ? sourcePixelValue : 0
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(float) thresholdValue(const float *__nullable) transform
initialize a MPSImageThresholdToZero filter
Parameters:
device The device the filter will run on
thresholdValue The threshold value to use
transform This matrix is an array of 3 floats. The default if no transform is specifed is BT.601/JPEG: {0.299f, 0.587f, 0.114f};
Property Documentation
- thresholdValue [read], [nonatomic], [assign]
The threshold value used to init the threshold filter
- transform [read], [nonatomic], [assign]
The color transform used to init the threshold filter
Author
Generated automatically by Doxygen for MetalPerformanceShaders.framework from the source code.
Version MetalPerformanceShaders-100 Thu Feb 8 2018 MPSImageThresholdToZero(3)
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