Package apple.metalperformanceshaders

Class MPSImageErode

  • All Implemented Interfaces:
    NSCoding, NSCopying, NSSecureCoding, NSObject
    public class MPSImageErode
extends MPSImageDilate
    MPSImageErode The MPSImageErode filter finds the minimum pixel value in a rectangular region centered around each pixel in the source image. It is like the MPSImageAreaMin, except that the intensity at each position is calculated relative to a different value before determining which is the maximum pixel value, allowing for shaped, non-rectangular morphological probes. [@code] for each pixel in the filter window: value = pixel[filterY][filterX] + filter[filterY*filter_width+filterX] if( value < bestValue ){ result = value bestValue = value; } [@endcode] A filter that contains all zeros is identical to a MPSImageAreaMin filter. The center filter element is assumed to be 0, to avoid causing a general lightening of the image. The definition of the filter for MPSImageErode is different from vImage. (MPSErode_filter_value = 1.0f-vImageErode_filter_value.) This allows MPSImageDilate and MPSImageErode to use the same filter, making open and close operators easier to write. The edgeMode property is assumed to always be MPSImageEdgeModeClamp for this filter.

    • Constructor Detail

      • MPSImageErode

        protected MPSImageErode​(org.moe.natj.general.Pointer peer)

    • Method Detail

      • accessInstanceVariablesDirectly

        public static boolean accessInstanceVariablesDirectly()

      • allocWithZone

        public static java.lang.Object allocWithZone​(org.moe.natj.general.ptr.VoidPtr zone)

      • automaticallyNotifiesObserversForKey

        public static boolean automaticallyNotifiesObserversForKey​(java.lang.String key)

      • cancelPreviousPerformRequestsWithTarget

        public static void cancelPreviousPerformRequestsWithTarget​(java.lang.Object aTarget)

      • cancelPreviousPerformRequestsWithTargetSelectorObject

        public static void cancelPreviousPerformRequestsWithTargetSelectorObject​(java.lang.Object aTarget,
                                                                         org.moe.natj.objc.SEL aSelector,
                                                                         java.lang.Object anArgument)

      • classFallbacksForKeyedArchiver

        public static NSArray<java.lang.String> classFallbacksForKeyedArchiver()

      • classForKeyedUnarchiver

        public static org.moe.natj.objc.Class classForKeyedUnarchiver()

      • debugDescription_static

        public static java.lang.String debugDescription_static()

      • description_static

        public static java.lang.String description_static()

      • hash_static

        public static long hash_static()

      • instanceMethodSignatureForSelector

        public static NSMethodSignature instanceMethodSignatureForSelector​(org.moe.natj.objc.SEL aSelector)

      • instancesRespondToSelector

        public static boolean instancesRespondToSelector​(org.moe.natj.objc.SEL aSelector)

      • isSubclassOfClass

        public static boolean isSubclassOfClass​(org.moe.natj.objc.Class aClass)

      • keyPathsForValuesAffectingValueForKey

        public static NSSet<java.lang.String> keyPathsForValuesAffectingValueForKey​(java.lang.String key)

      • new_objc

        public static java.lang.Object new_objc()

      • resolveClassMethod

        public static boolean resolveClassMethod​(org.moe.natj.objc.SEL sel)

      • resolveInstanceMethod

        public static boolean resolveInstanceMethod​(org.moe.natj.objc.SEL sel)

      • setVersion_static

        public static void setVersion_static​(long aVersion)

      • superclass_static

        public static org.moe.natj.objc.Class superclass_static()

      • version_static

        public static long version_static()

      • initWithDevice

        public MPSImageErode initWithDevice​(java.lang.Object device)
        Description copied from class: MPSUnaryImageKernel
        Standard init with default properties per filter type
        Overrides:
        initWithDevice in class MPSImageDilate
        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.

      • initWithDeviceKernelWidthKernelHeightValues

        public MPSImageErode initWithDeviceKernelWidthKernelHeightValues​(MTLDevice device,
                                                                 long kernelWidth,
                                                                 long kernelHeight,
                                                                 org.moe.natj.general.ptr.ConstFloatPtr values)
        Description copied from class: MPSImageDilate
        Init a object with kernel height, width and weight values. Each dilate shape probe defines a 3D surface of values. These are arranged in order left to right, then top to bottom in a 1D array. (values[kernelWidth*y+x] = probe[y][x]) Values should be generally be in the range [0,1] with the center pixel tending towards 0 and edges towards 1. However, any numerical value is allowed. Calculations are subject to the usual floating-point rounding error.
        Overrides:
        initWithDeviceKernelWidthKernelHeightValues in class MPSImageDilate
        Parameters:
        device - The device the filter will run on
        kernelWidth - The width of the kernel. Must be an odd number.
        kernelHeight - The height of the kernel. Must be an odd number.
        values - The set of values to use as the dilate probe. The values are copied into the filter. To avoid image ligthening or darkening, the center value should be 0.0f.

      • initWithCoderDevice

        public MPSImageErode initWithCoderDevice​(NSCoder aDecoder,
                                         java.lang.Object device)
        Description copied from class: MPSImageDilate
        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.
        Overrides:
        initWithCoderDevice in class MPSImageDilate
        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.

      • supportsSecureCoding

        public static boolean supportsSecureCoding()

      • _supportsSecureCoding

        public boolean _supportsSecureCoding()
        Description copied from interface: NSSecureCoding
        This property must return YES on all classes that allow secure coding. Subclasses of classes that adopt NSSecureCoding and override initWithCoder: must also override this method and return YES. The Secure Coding Guide should be consulted when writing methods that decode data.
        Specified by:
        _supportsSecureCoding in interface NSSecureCoding
        Overrides:
        _supportsSecureCoding in class MPSImageDilate