// // This file is auto-generated. Please don't modify it! // #pragma once #ifdef __cplusplus //#import "opencv.hpp" #import "opencv2/features2d.hpp" #else #define CV_EXPORTS #endif #import #import "Feature2D.h" NS_ASSUME_NONNULL_BEGIN // C++: class SIFT /** * Class for extracting keypoints and computing descriptors using the Scale Invariant Feature Transform * (SIFT) algorithm by D. Lowe CITE: Lowe04 . * * Member of `Features2d` */ CV_EXPORTS @interface SIFT : Feature2D #ifdef __cplusplus @property(readonly)cv::Ptr nativePtrSIFT; #endif #ifdef __cplusplus - (instancetype)initWithNativePtr:(cv::Ptr)nativePtr; + (instancetype)fromNative:(cv::Ptr)nativePtr; #endif #pragma mark - Methods // // static Ptr_SIFT cv::SIFT::create(int nfeatures = 0, int nOctaveLayers = 3, double contrastThreshold = 0.04, double edgeThreshold = 10, double sigma = 1.6) // /** * @param nfeatures The number of best features to retain. The features are ranked by their scores * (measured in SIFT algorithm as the local contrast) * * @param nOctaveLayers The number of layers in each octave. 3 is the value used in D. Lowe paper. The * number of octaves is computed automatically from the image resolution. * * @param contrastThreshold The contrast threshold used to filter out weak features in semi-uniform * (low-contrast) regions. The larger the threshold, the less features are produced by the detector. * * NOTE: The contrast threshold will be divided by nOctaveLayers when the filtering is applied. When * nOctaveLayers is set to default and if you want to use the value used in D. Lowe paper, 0.03, set * this argument to 0.09. * * @param edgeThreshold The threshold used to filter out edge-like features. Note that the its meaning * is different from the contrastThreshold, i.e. the larger the edgeThreshold, the less features are * filtered out (more features are retained). * * @param sigma The sigma of the Gaussian applied to the input image at the octave \#0. If your image * is captured with a weak camera with soft lenses, you might want to reduce the number. */ + (SIFT*)create:(int)nfeatures nOctaveLayers:(int)nOctaveLayers contrastThreshold:(double)contrastThreshold edgeThreshold:(double)edgeThreshold sigma:(double)sigma NS_SWIFT_NAME(create(nfeatures:nOctaveLayers:contrastThreshold:edgeThreshold:sigma:)); /** * @param nfeatures The number of best features to retain. The features are ranked by their scores * (measured in SIFT algorithm as the local contrast) * * @param nOctaveLayers The number of layers in each octave. 3 is the value used in D. Lowe paper. The * number of octaves is computed automatically from the image resolution. * * @param contrastThreshold The contrast threshold used to filter out weak features in semi-uniform * (low-contrast) regions. The larger the threshold, the less features are produced by the detector. * * NOTE: The contrast threshold will be divided by nOctaveLayers when the filtering is applied. When * nOctaveLayers is set to default and if you want to use the value used in D. Lowe paper, 0.03, set * this argument to 0.09. * * @param edgeThreshold The threshold used to filter out edge-like features. Note that the its meaning * is different from the contrastThreshold, i.e. the larger the edgeThreshold, the less features are * filtered out (more features are retained). * * is captured with a weak camera with soft lenses, you might want to reduce the number. */ + (SIFT*)create:(int)nfeatures nOctaveLayers:(int)nOctaveLayers contrastThreshold:(double)contrastThreshold edgeThreshold:(double)edgeThreshold NS_SWIFT_NAME(create(nfeatures:nOctaveLayers:contrastThreshold:edgeThreshold:)); /** * @param nfeatures The number of best features to retain. The features are ranked by their scores * (measured in SIFT algorithm as the local contrast) * * @param nOctaveLayers The number of layers in each octave. 3 is the value used in D. Lowe paper. The * number of octaves is computed automatically from the image resolution. * * @param contrastThreshold The contrast threshold used to filter out weak features in semi-uniform * (low-contrast) regions. The larger the threshold, the less features are produced by the detector. * * NOTE: The contrast threshold will be divided by nOctaveLayers when the filtering is applied. When * nOctaveLayers is set to default and if you want to use the value used in D. Lowe paper, 0.03, set * this argument to 0.09. * * is different from the contrastThreshold, i.e. the larger the edgeThreshold, the less features are * filtered out (more features are retained). * * is captured with a weak camera with soft lenses, you might want to reduce the number. */ + (SIFT*)create:(int)nfeatures nOctaveLayers:(int)nOctaveLayers contrastThreshold:(double)contrastThreshold NS_SWIFT_NAME(create(nfeatures:nOctaveLayers:contrastThreshold:)); /** * @param nfeatures The number of best features to retain. The features are ranked by their scores * (measured in SIFT algorithm as the local contrast) * * @param nOctaveLayers The number of layers in each octave. 3 is the value used in D. Lowe paper. The * number of octaves is computed automatically from the image resolution. * * (low-contrast) regions. The larger the threshold, the less features are produced by the detector. * * NOTE: The contrast threshold will be divided by nOctaveLayers when the filtering is applied. When * nOctaveLayers is set to default and if you want to use the value used in D. Lowe paper, 0.03, set * this argument to 0.09. * * is different from the contrastThreshold, i.e. the larger the edgeThreshold, the less features are * filtered out (more features are retained). * * is captured with a weak camera with soft lenses, you might want to reduce the number. */ + (SIFT*)create:(int)nfeatures nOctaveLayers:(int)nOctaveLayers NS_SWIFT_NAME(create(nfeatures:nOctaveLayers:)); /** * @param nfeatures The number of best features to retain. The features are ranked by their scores * (measured in SIFT algorithm as the local contrast) * * number of octaves is computed automatically from the image resolution. * * (low-contrast) regions. The larger the threshold, the less features are produced by the detector. * * NOTE: The contrast threshold will be divided by nOctaveLayers when the filtering is applied. When * nOctaveLayers is set to default and if you want to use the value used in D. Lowe paper, 0.03, set * this argument to 0.09. * * is different from the contrastThreshold, i.e. the larger the edgeThreshold, the less features are * filtered out (more features are retained). * * is captured with a weak camera with soft lenses, you might want to reduce the number. */ + (SIFT*)create:(int)nfeatures NS_SWIFT_NAME(create(nfeatures:)); /** * (measured in SIFT algorithm as the local contrast) * * number of octaves is computed automatically from the image resolution. * * (low-contrast) regions. The larger the threshold, the less features are produced by the detector. * * NOTE: The contrast threshold will be divided by nOctaveLayers when the filtering is applied. When * nOctaveLayers is set to default and if you want to use the value used in D. Lowe paper, 0.03, set * this argument to 0.09. * * is different from the contrastThreshold, i.e. the larger the edgeThreshold, the less features are * filtered out (more features are retained). * * is captured with a weak camera with soft lenses, you might want to reduce the number. */ + (SIFT*)create NS_SWIFT_NAME(create()); // // static Ptr_SIFT cv::SIFT::create(int nfeatures, int nOctaveLayers, double contrastThreshold, double edgeThreshold, double sigma, int descriptorType) // /** * Create SIFT with specified descriptorType. * @param nfeatures The number of best features to retain. The features are ranked by their scores * (measured in SIFT algorithm as the local contrast) * * @param nOctaveLayers The number of layers in each octave. 3 is the value used in D. Lowe paper. The * number of octaves is computed automatically from the image resolution. * * @param contrastThreshold The contrast threshold used to filter out weak features in semi-uniform * (low-contrast) regions. The larger the threshold, the less features are produced by the detector. * * NOTE: The contrast threshold will be divided by nOctaveLayers when the filtering is applied. When * nOctaveLayers is set to default and if you want to use the value used in D. Lowe paper, 0.03, set * this argument to 0.09. * * @param edgeThreshold The threshold used to filter out edge-like features. Note that the its meaning * is different from the contrastThreshold, i.e. the larger the edgeThreshold, the less features are * filtered out (more features are retained). * * @param sigma The sigma of the Gaussian applied to the input image at the octave \#0. If your image * is captured with a weak camera with soft lenses, you might want to reduce the number. * * @param descriptorType The type of descriptors. Only CV_32F and CV_8U are supported. */ + (SIFT*)create:(int)nfeatures nOctaveLayers:(int)nOctaveLayers contrastThreshold:(double)contrastThreshold edgeThreshold:(double)edgeThreshold sigma:(double)sigma descriptorType:(int)descriptorType NS_SWIFT_NAME(create(nfeatures:nOctaveLayers:contrastThreshold:edgeThreshold:sigma:descriptorType:)); // // String cv::SIFT::getDefaultName() // - (NSString*)getDefaultName NS_SWIFT_NAME(getDefaultName()); @end NS_ASSUME_NONNULL_END