apple.vision

Class VNDetectContoursRequest

java.lang.Object

org.moe.natj.general.NativeObject

org.moe.natj.objc.ObjCObject

apple.NSObject

apple.vision.VNRequest

apple.vision.VNImageBasedRequest

apple.vision.VNDetectContoursRequest

All Implemented Interfaces:

NSCopying, NSObject

public class VNDetectContoursRequest
extends VNImageBasedRequest

A request that will detect the countours for the edges in an image.

This request will produce a VNContoursObservation which describes the contours.

Nested Class Summary

Nested classes/interfaces inherited from class apple.vision.VNRequest

VNRequest.Block_completionHandler_ret, VNRequest.Block_initWithCompletionHandler

Nested classes/interfaces inherited from class apple.NSObject

NSObject.Function_instanceMethodForSelector_ret, NSObject.Function_methodForSelector_ret

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	VNDetectContoursRequest(org.moe.natj.general.Pointer peer)

Method Summary

Modifier and Type	Method and Description
static boolean	accessInstanceVariablesDirectly()
static VNDetectContoursRequest	alloc()
static VNDetectContoursRequest	allocWithZone(org.moe.natj.general.ptr.VoidPtr zone)
static boolean	automaticallyNotifiesObserversForKey(java.lang.String key)
static void	cancelPreviousPerformRequestsWithTarget(java.lang.Object aTarget)
static void	cancelPreviousPerformRequestsWithTargetSelectorObject(java.lang.Object aTarget, org.moe.natj.objc.SEL aSelector, java.lang.Object anArgument)
static NSArray<java.lang.String>	classFallbacksForKeyedArchiver()
static org.moe.natj.objc.Class	classForKeyedUnarchiver()
float	contrastAdjustment() The amount to adjust the image's contrast by.
NSNumber	contrastPivot() The pixel value to use as a pivot for the contrast.
static long	currentRevision()
static java.lang.String	debugDescription_static()
static long	defaultRevision()
static java.lang.String	description_static()
boolean	detectDarkOnLight()
boolean	detectsDarkOnLight() Identifies to the request if detecting a dark object on a light background, or vice versa, to aid in detection.
static long	hash_static()
VNDetectContoursRequest	init() Creates a new VNRequest with no completion handler.
VNDetectContoursRequest	initWithCompletionHandler(VNRequest.Block_initWithCompletionHandler completionHandler) Creates a new VNRequest with an optional completion handler.
static NSObject.Function_instanceMethodForSelector_ret	instanceMethodForSelector(org.moe.natj.objc.SEL aSelector)
static NSMethodSignature	instanceMethodSignatureForSelector(org.moe.natj.objc.SEL aSelector)
static boolean	instancesRespondToSelector(org.moe.natj.objc.SEL aSelector)
static boolean	isSubclassOfClass(org.moe.natj.objc.Class aClass)
static NSSet<java.lang.String>	keyPathsForValuesAffectingValueForKey(java.lang.String key)
long	maximumImageDimension() The limit on the maximum dimension of the image to be used for contour detection.
static VNDetectContoursRequest	new_objc()
static boolean	resolveClassMethod(org.moe.natj.objc.SEL sel)
static boolean	resolveInstanceMethod(org.moe.natj.objc.SEL sel)
NSArray<? extends VNContoursObservation>	results() VNContoursObservation results.
void	setContrastAdjustment(float value) The amount to adjust the image's contrast by.
void	setContrastPivot(NSNumber value) The pixel value to use as a pivot for the contrast.
void	setDetectDarkOnLight(boolean value)
void	setDetectsDarkOnLight(boolean value) Identifies to the request if detecting a dark object on a light background, or vice versa, to aid in detection.
void	setMaximumImageDimension(long value) The limit on the maximum dimension of the image to be used for contour detection.
static void	setVersion_static(long aVersion)
static org.moe.natj.objc.Class	superclass_static()
static NSIndexSet	supportedRevisions()
static long	version_static()

Methods inherited from class apple.vision.VNImageBasedRequest

regionOfInterest, setRegionOfInterest

Methods inherited from class apple.vision.VNRequest

cancel, completionHandler, copyWithZone, preferBackgroundProcessing, revision, setPreferBackgroundProcessing, setRevision, setUsesCPUOnly, usesCPUOnly

Methods inherited from class apple.NSObject

accessibilityActivate, accessibilityActivationPoint, accessibilityAssistiveTechnologyFocusedIdentifiers, accessibilityAttributedHint, accessibilityAttributedLabel, accessibilityAttributedUserInputLabels, accessibilityAttributedValue, accessibilityContainerType, accessibilityCustomActions, accessibilityCustomRotors, accessibilityDecrement, accessibilityDragSourceDescriptors, accessibilityDropPointDescriptors, accessibilityElementAtIndex, accessibilityElementCount, accessibilityElementDidBecomeFocused, accessibilityElementDidLoseFocus, accessibilityElementIsFocused, accessibilityElements, accessibilityElementsHidden, accessibilityFrame, accessibilityHint, accessibilityIncrement, accessibilityLabel, accessibilityLanguage, accessibilityNavigationStyle, accessibilityPath, accessibilityPerformEscape, accessibilityPerformMagicTap, accessibilityRespondsToUserInteraction, accessibilityScroll, accessibilityTextualContext, accessibilityTraits, accessibilityUserInputLabels, accessibilityValue, accessibilityViewIsModal, addObserverForKeyPathOptionsContext, attemptRecoveryFromErrorOptionIndex, attemptRecoveryFromErrorOptionIndexDelegateDidRecoverSelectorContextInfo, autoContentAccessingProxy, awakeAfterUsingCoder, awakeFromNib, class_objc, classForCoder, classForKeyedArchiver, copy, dealloc, debugDescription, description, dictionaryWithValuesForKeys, didChangeValueForKey, didChangeValueForKeyWithSetMutationUsingObjects, didChangeValuesAtIndexesForKey, doesNotRecognizeSelector, fileManagerShouldProceedAfterError, fileManagerWillProcessPath, finalize_objc, forwardingTargetForSelector, forwardInvocation, hash, indexOfAccessibilityElement, isAccessibilityElement, isEqual, isKindOfClass, isMemberOfClass, isProxy, methodForSelector, methodSignatureForSelector, mutableArrayValueForKey, mutableArrayValueForKeyPath, mutableCopy, mutableOrderedSetValueForKey, mutableOrderedSetValueForKeyPath, mutableSetValueForKey, mutableSetValueForKeyPath, observationInfo, observeValueForKeyPathOfObjectChangeContext, performSelector, performSelectorInBackgroundWithObject, performSelectorOnMainThreadWithObjectWaitUntilDone, performSelectorOnMainThreadWithObjectWaitUntilDoneModes, performSelectorOnThreadWithObjectWaitUntilDone, performSelectorOnThreadWithObjectWaitUntilDoneModes, performSelectorWithObject, performSelectorWithObjectAfterDelay, performSelectorWithObjectAfterDelayInModes, performSelectorWithObjectWithObject, prepareForInterfaceBuilder, provideImageDataBytesPerRowOrigin_Size_UserInfo, removeObserverForKeyPath, removeObserverForKeyPathContext, replacementObjectForCoder, replacementObjectForKeyedArchiver, respondsToSelector, self, setAccessibilityActivationPoint, setAccessibilityAttributedHint, setAccessibilityAttributedLabel, setAccessibilityAttributedUserInputLabels, setAccessibilityAttributedValue, setAccessibilityContainerType, setAccessibilityCustomActions, setAccessibilityCustomRotors, setAccessibilityDragSourceDescriptors, setAccessibilityDropPointDescriptors, setAccessibilityElements, setAccessibilityElementsHidden, setAccessibilityFrame, setAccessibilityHint, setAccessibilityLabel, setAccessibilityLanguage, setAccessibilityNavigationStyle, setAccessibilityPath, setAccessibilityRespondsToUserInteraction, setAccessibilityTextualContext, setAccessibilityTraits, setAccessibilityUserInputLabels, setAccessibilityValue, setAccessibilityViewIsModal, setIsAccessibilityElement, setNilValueForKey, setObservationInfo, setShouldGroupAccessibilityChildren, setValueForKey, setValueForKeyPath, setValueForUndefinedKey, setValuesForKeysWithDictionary, shouldGroupAccessibilityChildren, superclass, validateValueForKeyError, validateValueForKeyPathError, valueForKey, valueForKeyPath, valueForUndefinedKey, willChangeValueForKey, willChangeValueForKeyWithSetMutationUsingObjects, willChangeValuesAtIndexesForKey

Methods inherited from class org.moe.natj.objc.ObjCObject

equals, toString

Methods inherited from class org.moe.natj.general.NativeObject

finalize, getPeer, getPeerPointer

Methods inherited from class java.lang.Object

clone, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

VNDetectContoursRequest

protected VNDetectContoursRequest(org.moe.natj.general.Pointer peer)

Method Detail

accessInstanceVariablesDirectly

public static boolean accessInstanceVariablesDirectly()

alloc

public static VNDetectContoursRequest alloc()

allocWithZone

public static VNDetectContoursRequest 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()

contrastAdjustment

public float contrastAdjustment()

The amount to adjust the image's contrast by. A value of +1.0 means that the contrast is not adjusted. The default value is +2.0.

Countour detection works best with high contrast images. The default value of 2 doubles the image's contrast to aid in detection. If the image already has a high contrast then this value should be set to 1.

currentRevision

public static long currentRevision()

debugDescription_static

public static java.lang.String debugDescription_static()

defaultRevision

public static long defaultRevision()

description_static

public static java.lang.String description_static()

detectDarkOnLight

public boolean detectDarkOnLight()

detectsDarkOnLight

public boolean detectsDarkOnLight()

Identifies to the request if detecting a dark object on a light background, or vice versa, to aid in detection. The default value is YES.

hash_static

public static long hash_static()

init

public VNDetectContoursRequest init()

Description copied from class: VNRequest

Creates a new VNRequest with no completion handler.

Overrides:

init in class VNImageBasedRequest

initWithCompletionHandler

public VNDetectContoursRequest initWithCompletionHandler(VNRequest.Block_initWithCompletionHandler completionHandler)

Description copied from class: VNRequest

Creates a new VNRequest with an optional completion handler.

Overrides:

initWithCompletionHandler in class VNImageBasedRequest

Parameters:

completionHandler - The block to be invoked after the request has completed its processing. The completion handler gets executed on the same dispatch queue as the request being executed.

instanceMethodForSelector

public static NSObject.Function_instanceMethodForSelector_ret instanceMethodForSelector(org.moe.natj.objc.SEL aSelector)

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)

maximumImageDimension

public long maximumImageDimension()

The limit on the maximum dimension of the image to be used for contour detection. Valid range of values is [64 ... NSUIntegerMax]. The default value is 512.

As the contour request is compute intensive, the input image is scaled down maintaining aspect ratio (if needed), such that its maximum dimension is the value of this property. The image never gets scaled up, so specifying the maximum value ensures that the image gets processed in its original size and not downscaled.

new_objc

public static VNDetectContoursRequest new_objc()

resolveClassMethod

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

resolveInstanceMethod

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

setContrastAdjustment

public void setContrastAdjustment(float value)

The amount to adjust the image's contrast by. A value of +1.0 means that the contrast is not adjusted. The default value is +2.0.

Countour detection works best with high contrast images. The default value of 2 doubles the image's contrast to aid in detection. If the image already has a high contrast then this value should be set to 1.

setDetectDarkOnLight

public void setDetectDarkOnLight(boolean value)

setDetectsDarkOnLight

public void setDetectsDarkOnLight(boolean value)

Identifies to the request if detecting a dark object on a light background, or vice versa, to aid in detection. The default value is YES.

setMaximumImageDimension

public void setMaximumImageDimension(long value)

The limit on the maximum dimension of the image to be used for contour detection. Valid range of values is [64 ... NSUIntegerMax]. The default value is 512.

As the contour request is compute intensive, the input image is scaled down maintaining aspect ratio (if needed), such that its maximum dimension is the value of this property. The image never gets scaled up, so specifying the maximum value ensures that the image gets processed in its original size and not downscaled.

setVersion_static

public static void setVersion_static(long aVersion)

superclass_static

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

supportedRevisions

public static NSIndexSet supportedRevisions()

version_static

public static long version_static()

contrastPivot

public NSNumber contrastPivot()

The pixel value to use as a pivot for the contrast. Valid values are from [0.0 ... +1.0], or nil to auto-detect based on image intensity. The default value is +0.5 (i.e. pixel center).

results

public NSArray<? extends VNContoursObservation> results()

VNContoursObservation results.

Overrides:

results in class VNRequest

setContrastPivot

public void setContrastPivot(NSNumber value)

The pixel value to use as a pivot for the contrast. Valid values are from [0.0 ... +1.0], or nil to auto-detect based on image intensity. The default value is +0.5 (i.e. pixel center).