101 lines
2.1 KiB
Objective-C
101 lines
2.1 KiB
Objective-C
//
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// KeyPoint.h
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//
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// Created by Giles Payne on 2019/10/08.
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//
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#pragma once
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#ifdef __cplusplus
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#import "opencv2/core.hpp"
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#else
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#define CV_EXPORTS
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#endif
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#import <Foundation/Foundation.h>
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@class Point2f;
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NS_ASSUME_NONNULL_BEGIN
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/**
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* Object representing a point feature found by one of many available keypoint detectors, such as Harris corner detector, FAST, StarDetector, SURF, SIFT etc.
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*/
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CV_EXPORTS @interface KeyPoint : NSObject
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#pragma mark - Properties
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/**
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* Coordinates of the keypoint.
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*/
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@property Point2f* pt;
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/**
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* Diameter of the useful keypoint adjacent area.
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*/
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@property float size;
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/**
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* Computed orientation of the keypoint (-1 if not applicable).
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*/
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@property float angle;
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/**
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* The response, by which the strongest keypoints have been selected. Can
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* be used for further sorting or subsampling.
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*/
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@property float response;
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/**
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* Octave (pyramid layer), from which the keypoint has been extracted.
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*/
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@property int octave;
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/**
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* Object ID, that can be used to cluster keypoints by an object they
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* belong to.
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*/
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@property int classId;
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#ifdef __cplusplus
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@property(readonly) cv::KeyPoint& nativeRef;
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#endif
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#pragma mark - Constructors
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- (instancetype)init;
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- (instancetype)initWithX:(float)x y:(float)y size:(float)size angle:(float)angle response:(float)response octave:(int)octave classId:(int)classId;
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- (instancetype)initWithX:(float)x y:(float)y size:(float)size angle:(float)angle response:(float)response octave:(int)octave;
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- (instancetype)initWithX:(float)x y:(float)y size:(float)size angle:(float)angle response:(float)response;
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- (instancetype)initWithX:(float)x y:(float)y size:(float)size angle:(float)angle;
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- (instancetype)initWithX:(float)x y:(float)y size:(float)size;
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#ifdef __cplusplus
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+ (instancetype)fromNative:(cv::KeyPoint&)keyPoint;
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#endif
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#pragma mark - Common Methods
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/**
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* Clone object
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*/
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- (KeyPoint*)clone;
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/**
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* Compare for equality
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* @param other Object to compare
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*/
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- (BOOL)isEqual:(nullable id)other;
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/**
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* Calculate hash value for this object
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*/
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- (NSUInteger)hash;
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/**
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* Returns a string that describes the contents of the object
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*/
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- (NSString*)description;
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@end
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NS_ASSUME_NONNULL_END
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