apple.vision

Class VNDetectTrajectoriesRequest

java.lang.Object

org.moe.natj.general.NativeObject

org.moe.natj.objc.ObjCObject

apple.NSObject

apple.vision.VNRequest

apple.vision.VNImageBasedRequest

apple.vision.VNStatefulRequest

apple.vision.VNDetectTrajectoriesRequest

All Implemented Interfaces:

NSCopying, NSObject

public class VNDetectTrajectoriesRequest
extends VNStatefulRequest

A request that detects trajectories of shapes (even small ones) that follow a parabolic path in a sequence of images.

This request detects objects moving and (once their path follows the constraint of a parabola), a VNTrajectoryObservation will be returned with the detected points and the equation describing the parabola.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	VNDetectTrajectoriesRequest.Block_initWithFrameAnalysisSpacingTrajectoryLengthCompletionHandler

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

VNStatefulRequest.Block_initWithFrameAnalysisSpacingCompletionHandler

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	VNDetectTrajectoriesRequest(org.moe.natj.general.Pointer peer)

Method Summary

Modifier and Type	Method and Description
static boolean	accessInstanceVariablesDirectly()
static VNDetectTrajectoriesRequest	alloc()
static VNDetectTrajectoriesRequest	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()
static long	currentRevision()
static java.lang.String	debugDescription_static()
static long	defaultRevision()
static java.lang.String	description_static()
static long	hash_static()
VNDetectTrajectoriesRequest	init() Creates a new VNRequest with no completion handler.
VNDetectTrajectoriesRequest	initWithCompletionHandler(VNRequest.Block_initWithCompletionHandler completionHandler) Creates a new VNRequest with an optional completion handler.
VNDetectTrajectoriesRequest	initWithFrameAnalysisSpacingCompletionHandler(CMTime frameAnalysisSpacing, VNStatefulRequest.Block_initWithFrameAnalysisSpacingCompletionHandler completionHandler) Create a new video-based stateful request.
VNDetectTrajectoriesRequest	initWithFrameAnalysisSpacingTrajectoryLengthCompletionHandler(CMTime frameAnalysisSpacing, long trajectoryLength, VNDetectTrajectoriesRequest.Block_initWithFrameAnalysisSpacingTrajectoryLengthCompletionHandler completionHandler) Create a new request that will detect the trajectory of a shape in motion.
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)
float	maximumObjectSize()
float	minimumObjectSize()
static VNDetectTrajectoriesRequest	new_objc()
float	objectMaximumNormalizedRadius() Specifies the maximum radius of the bounding circle of the object to be tracked.
float	objectMinimumNormalizedRadius() Specifies the minimum radius of the bounding circle of the object to be tracked.
static boolean	resolveClassMethod(org.moe.natj.objc.SEL sel)
static boolean	resolveInstanceMethod(org.moe.natj.objc.SEL sel)
NSArray<? extends VNTrajectoryObservation>	results() Provides VNTrajectoryObservation results.
void	setMaximumObjectSize(float value)
void	setMinimumObjectSize(float value)
void	setObjectMaximumNormalizedRadius(float value) Specifies the maximum radius of the bounding circle of the object to be tracked.
void	setObjectMinimumNormalizedRadius(float value) Specifies the minimum radius of the bounding circle of the object to be tracked.
void	setTargetFrameTime(CMTime value) Specifies the desired target frame time for processing trajectory detection.
static void	setVersion_static(long aVersion)
static org.moe.natj.objc.Class	superclass_static()
static NSIndexSet	supportedRevisions()
CMTime	targetFrameTime() Specifies the desired target frame time for processing trajectory detection.
long	trajectoryLength() The number of points required to analyze a parabola that indicates a trajectory.
static long	version_static()

Methods inherited from class apple.vision.VNStatefulRequest

frameAnalysisSpacing, minimumLatencyFrameCount, requestFrameAnalysisSpacing

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

VNDetectTrajectoriesRequest

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

Method Detail

accessInstanceVariablesDirectly

public static boolean accessInstanceVariablesDirectly()

alloc

public static VNDetectTrajectoriesRequest alloc()

allocWithZone

public static VNDetectTrajectoriesRequest 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()

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()

hash_static

public static long hash_static()

init

public VNDetectTrajectoriesRequest init()

Description copied from class: VNRequest

Creates a new VNRequest with no completion handler.

Overrides:

init in class VNStatefulRequest

initWithCompletionHandler

public VNDetectTrajectoriesRequest initWithCompletionHandler(VNRequest.Block_initWithCompletionHandler completionHandler)

Description copied from class: VNRequest

Creates a new VNRequest with an optional completion handler.

Overrides:

initWithCompletionHandler in class VNStatefulRequest

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.

initWithFrameAnalysisSpacingCompletionHandler

public VNDetectTrajectoriesRequest initWithFrameAnalysisSpacingCompletionHandler(CMTime frameAnalysisSpacing,
                                                                                 VNStatefulRequest.Block_initWithFrameAnalysisSpacingCompletionHandler completionHandler)

Description copied from class: VNStatefulRequest

Create a new video-based stateful request.

Overrides:

initWithFrameAnalysisSpacingCompletionHandler in class VNStatefulRequest

Parameters:

frameAnalysisSpacing - The reciprocal of maximum rate at which buffers will be processed. The request will not process buffers that fall within the frameAnalysisSpacing after it has performed the analysis. The analysis is not done by wall time but by analysis of of the time stamps of the samplebuffers being processed.

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.

initWithFrameAnalysisSpacingTrajectoryLengthCompletionHandler

public VNDetectTrajectoriesRequest initWithFrameAnalysisSpacingTrajectoryLengthCompletionHandler(CMTime frameAnalysisSpacing,
                                                                                                 long trajectoryLength,
                                                                                                 VNDetectTrajectoriesRequest.Block_initWithFrameAnalysisSpacingTrajectoryLengthCompletionHandler completionHandler)

Create a new request that will detect the trajectory of a shape in motion.

Parameters:

frameAnalysisSpacing - The reciprocal of the maximum rate at which buffers will be processed. The request will not process buffers that fall within the frameAnalysisSpacing after it has performed the analysis. The analysis is not done by wall time but by analysis of the time stamps of the samplebuffers being processed. This property is for instance useful to throttle the processing on slower devices. If this is set to kCMTimeZero then no frames get skipped in the analysis.

trajectoryLength - The number of points required to analyze a parabola that indicates a trajectory. Must be at least 5.

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)

maximumObjectSize

public float maximumObjectSize()

minimumObjectSize

public float minimumObjectSize()

new_objc

public static VNDetectTrajectoriesRequest new_objc()

objectMaximumNormalizedRadius

public float objectMaximumNormalizedRadius()

Specifies the maximum radius of the bounding circle of the object to be tracked. This can be used to filter out unwanted trajectories from larger objects moving through the scene. The default is 1.0, which means no filtering is applied. Changing the maximum from frame to frame can produce eratic trajectories as objects will either disappear or be added to the tracking base on this filtering. The size is specified in normalized coordinates.

objectMinimumNormalizedRadius

public float objectMinimumNormalizedRadius()

Specifies the minimum radius of the bounding circle of the object to be tracked. This can be used to filter out noise and small objects. The default is 0.0, which means no filtering is applied. Changing the property from frame to frame can produce eratic trajectories as objects will either disappear or be added to the tracking base on this filtering. The value is specified in normalized coordinates.

resolveClassMethod

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

resolveInstanceMethod

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

results

public NSArray<? extends VNTrajectoryObservation> results()

Provides VNTrajectoryObservation results.

Overrides:

results in class VNRequest

setMaximumObjectSize

public void setMaximumObjectSize(float value)

setMinimumObjectSize

public void setMinimumObjectSize(float value)

setObjectMaximumNormalizedRadius

public void setObjectMaximumNormalizedRadius(float value)

Specifies the maximum radius of the bounding circle of the object to be tracked. This can be used to filter out unwanted trajectories from larger objects moving through the scene. The default is 1.0, which means no filtering is applied. Changing the maximum from frame to frame can produce eratic trajectories as objects will either disappear or be added to the tracking base on this filtering. The size is specified in normalized coordinates.

setObjectMinimumNormalizedRadius

public void setObjectMinimumNormalizedRadius(float value)

Specifies the minimum radius of the bounding circle of the object to be tracked. This can be used to filter out noise and small objects. The default is 0.0, which means no filtering is applied. Changing the property from frame to frame can produce eratic trajectories as objects will either disappear or be added to the tracking base on this filtering. The value is specified in normalized coordinates.

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()

trajectoryLength

public long trajectoryLength()

The number of points required to analyze a parabola that indicates a trajectory.

version_static

public static long version_static()

setTargetFrameTime

public void setTargetFrameTime(CMTime value)

Specifies the desired target frame time for processing trajectory detection. This can be used for real-time processing of frames, which requires execution with a specific amount of time. The target frame time is evaluated from frame-to-frame. If processing takes longer than this target frame time for the currect frame, it will attempt to reduce the amount of time taken by reducing the accuracy (down to a set minimum) for the next frame. If a frame takes less time than this target, then accuracy of the next frame will be increased (up to a set maximum). The default value is kCMTimeIndefinite, meaning accuracy stays at the predefined maximum.

targetFrameTime

public CMTime targetFrameTime()

Specifies the desired target frame time for processing trajectory detection. This can be used for real-time processing of frames, which requires execution with a specific amount of time. The target frame time is evaluated from frame-to-frame. If processing takes longer than this target frame time for the currect frame, it will attempt to reduce the amount of time taken by reducing the accuracy (down to a set minimum) for the next frame. If a frame takes less time than this target, then accuracy of the next frame will be increased (up to a set maximum). The default value is kCMTimeIndefinite, meaning accuracy stays at the predefined maximum.