OpenCVForUnity.Img_hashModule.Img_hash Class Reference

Static Public Member Functions
static void	averageHash (Mat inputArr, Mat outputArr)
	Calculates img_hash::AverageHash in one call.
static void	blockMeanHash (Mat inputArr, Mat outputArr)
	Computes block mean hash of the input image.
static void	blockMeanHash (Mat inputArr, Mat outputArr, int mode)
	Computes block mean hash of the input image.
static void	colorMomentHash (Mat inputArr, Mat outputArr)
	Computes color moment hash of the input, the algorithm is come from the paper "Perceptual Hashing for Color Images Using Invariant Moments".
static void	marrHildrethHash (Mat inputArr, Mat outputArr)
	Computes average hash value of the input image.
static void	marrHildrethHash (Mat inputArr, Mat outputArr, float alpha)
	Computes average hash value of the input image.
static void	marrHildrethHash (Mat inputArr, Mat outputArr, float alpha, float scale)
	Computes average hash value of the input image.
static void	pHash (Mat inputArr, Mat outputArr)
	Computes pHash value of the input image.
static void	radialVarianceHash (Mat inputArr, Mat outputArr)
	Computes radial variance hash of the input image.
static void	radialVarianceHash (Mat inputArr, Mat outputArr, double sigma)
	Computes radial variance hash of the input image.
static void	radialVarianceHash (Mat inputArr, Mat outputArr, double sigma, int numOfAngleLine)
	Computes radial variance hash of the input image.

Static Public Attributes
const int	BLOCK_MEAN_HASH_MODE_0 = 0
const int	BLOCK_MEAN_HASH_MODE_1 = 1

Member Function Documentation

averageHash()

static void OpenCVForUnity.Img_hashModule.Img_hash.averageHash ( Mat inputArr, Mat outputArr )

static

Calculates img_hash::AverageHash in one call.

Parameters

inputArr	input image want to compute hash value, type should be CV_8UC4, CV_8UC3 or CV_8UC1.
outputArr	Hash value of input, it will contain 16 hex decimal number, return type is CV_8U

blockMeanHash() [1/2]

static void OpenCVForUnity.Img_hashModule.Img_hash.blockMeanHash ( Mat inputArr, Mat outputArr )

static

Computes block mean hash of the input image.

Parameters

inputArr	input image want to compute hash value, type should be CV_8UC4, CV_8UC3 or CV_8UC1.
outputArr	Hash value of input, it will contain 16 hex decimal number, return type is CV_8U
mode	the mode

blockMeanHash() [2/2]

static void OpenCVForUnity.Img_hashModule.Img_hash.blockMeanHash ( Mat inputArr, Mat outputArr, int mode )

static

Computes block mean hash of the input image.

Parameters

inputArr	input image want to compute hash value, type should be CV_8UC4, CV_8UC3 or CV_8UC1.
outputArr	Hash value of input, it will contain 16 hex decimal number, return type is CV_8U
mode	the mode

colorMomentHash()

static void OpenCVForUnity.Img_hashModule.Img_hash.colorMomentHash ( Mat inputArr, Mat outputArr )

static

Computes color moment hash of the input, the algorithm is come from the paper "Perceptual Hashing for Color Images Using Invariant Moments".

Parameters

inputArr	input image want to compute hash value, type should be CV_8UC4, CV_8UC3 or CV_8UC1.
outputArr	42 hash values with type CV_64F(double)

marrHildrethHash() [1/3]

static void OpenCVForUnity.Img_hashModule.Img_hash.marrHildrethHash ( Mat inputArr, Mat outputArr )

static

Computes average hash value of the input image.

Parameters

inputArr	input image want to compute hash value, type should be CV_8UC4, CV_8UC3, CV_8UC1.
outputArr	Hash value of input, it will contain 16 hex decimal number, return type is CV_8U
alpha	int scale factor for marr wavelet (default=2).
scale	int level of scale factor (default = 1)

marrHildrethHash() [2/3]

static void OpenCVForUnity.Img_hashModule.Img_hash.marrHildrethHash ( Mat inputArr, Mat outputArr, float alpha )

static

Computes average hash value of the input image.

Parameters

inputArr	input image want to compute hash value, type should be CV_8UC4, CV_8UC3, CV_8UC1.
outputArr	Hash value of input, it will contain 16 hex decimal number, return type is CV_8U
alpha	int scale factor for marr wavelet (default=2).
scale	int level of scale factor (default = 1)

marrHildrethHash() [3/3]

static void OpenCVForUnity.Img_hashModule.Img_hash.marrHildrethHash ( Mat inputArr, Mat outputArr, float alpha, float scale )

static

Computes average hash value of the input image.

Parameters

inputArr	input image want to compute hash value, type should be CV_8UC4, CV_8UC3, CV_8UC1.
outputArr	Hash value of input, it will contain 16 hex decimal number, return type is CV_8U
alpha	int scale factor for marr wavelet (default=2).
scale	int level of scale factor (default = 1)

pHash()

static void OpenCVForUnity.Img_hashModule.Img_hash.pHash ( Mat inputArr, Mat outputArr )

static

Computes pHash value of the input image.

Parameters

inputArr	input image want to compute hash value, type should be CV_8UC4, CV_8UC3, CV_8UC1.
outputArr	Hash value of input, it will contain 8 uchar value

radialVarianceHash() [1/3]

static void OpenCVForUnity.Img_hashModule.Img_hash.radialVarianceHash ( Mat inputArr, Mat outputArr )

static

Computes radial variance hash of the input image.

Parameters

inputArr	input image want to compute hash value, type should be CV_8UC4, CV_8UC3, CV_8UC1.
outputArr	Hash value of input
sigma	Gaussian kernel standard deviation
numOfAngleLine	The number of angles to consider

radialVarianceHash() [2/3]

static void OpenCVForUnity.Img_hashModule.Img_hash.radialVarianceHash ( Mat inputArr, Mat outputArr, double sigma )

static

Computes radial variance hash of the input image.

Parameters

inputArr	input image want to compute hash value, type should be CV_8UC4, CV_8UC3, CV_8UC1.
outputArr	Hash value of input
sigma	Gaussian kernel standard deviation
numOfAngleLine	The number of angles to consider

radialVarianceHash() [3/3]

static void OpenCVForUnity.Img_hashModule.Img_hash.radialVarianceHash ( Mat inputArr, Mat outputArr, double sigma, int numOfAngleLine )

static

Computes radial variance hash of the input image.

Parameters

inputArr	input image want to compute hash value, type should be CV_8UC4, CV_8UC3, CV_8UC1.
outputArr	Hash value of input
sigma	Gaussian kernel standard deviation
numOfAngleLine	The number of angles to consider

Member Data Documentation

BLOCK_MEAN_HASH_MODE_0

const int OpenCVForUnity.Img_hashModule.Img_hash.BLOCK_MEAN_HASH_MODE_0 = 0

static

BLOCK_MEAN_HASH_MODE_1

const int OpenCVForUnity.Img_hashModule.Img_hash.BLOCK_MEAN_HASH_MODE_1 = 1

static

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The documentation for this class was generated from the following file:

• OpenCVForUnity/Assets/OpenCVForUnity/org/opencv_contrib/img_hash/Img_hash.cs