形状距离与匹配

详细描述

类
类	cv::AffineTransformer
	OpenCV 仿射变换算法的封装类。 : 更多...
类	cv::ChiHistogramCostExtractor
	一种基于 Chi 的成本提取器。 : 更多...
类	cv::EMDHistogramCostExtractor
	一种基于 EMD 的成本提取器。 : 更多...
类	cv::EMDL1HistogramCostExtractor
	一种基于 EMD-L1 的成本提取器。 : 更多...
类	cv::HausdorffDistanceExtractor
	一种简单的、用于测量由轮廓定义的形状之间豪斯多夫距离的方法。 更多...
类	cv::HistogramCostExtractor
	直方图成本算法的抽象基类。 更多...
类	cv::NormHistogramCostExtractor
	一种基于范数的成本提取器。 : 更多...
类	cv::ShapeContextDistanceExtractor
	Shape Context 描述符和匹配算法的实现。 更多...
类	cv::ShapeDistanceExtractor
	形状距离算法的抽象基类。 更多...
类	cv::ShapeTransformer
	形状变换算法的抽象基类。 更多...
类	cv::ThinPlateSplineShapeTransformer
	变换的定义。 更多...

函数
Ptr< AffineTransformer >	cv::createAffineTransformer (bool fullAffine)
Ptr< HistogramCostExtractor >	cv::createChiHistogramCostExtractor (int nDummies=25, float defaultCost=0.2f)
Ptr< HistogramCostExtractor >	cv::createEMDHistogramCostExtractor (int flag=DIST_L2, int nDummies=25, float defaultCost=0.2f)
Ptr< HistogramCostExtractor >	cv::createEMDL1HistogramCostExtractor (int nDummies=25, float defaultCost=0.2f)
Ptr< HausdorffDistanceExtractor >	cv::createHausdorffDistanceExtractor (int distanceFlag=cv::NORM_L2, float rankProp=0.6f)
Ptr< HistogramCostExtractor >	cv::createNormHistogramCostExtractor (int flag=DIST_L2, int nDummies=25, float defaultCost=0.2f)
Ptr< ShapeContextDistanceExtractor >	cv::createShapeContextDistanceExtractor (int nAngularBins=12, int nRadialBins=4, float innerRadius=0.2f, float outerRadius=2, int iterations=3, const Ptr< HistogramCostExtractor > &comparer=createChiHistogramCostExtractor(), const Ptr< ShapeTransformer > &transformer=createThinPlateSplineShapeTransformer())
Ptr< ThinPlateSplineShapeTransformer >	cv::createThinPlateSplineShapeTransformer (double regularizationParameter=0)
float	cv::EMDL1 (InputArray signature1, InputArray signature2)
	根据 Haibin Ling 和 Kazunori Okuda 的论文“EMD-L1: An efficient and Robust Algorithm for comparing histogram-based descriptors”以及 Elizaveta Levina 和 Peter Bickel 的论文“The Earth Mover's Distance is the Mallows Distance: Some Insights from Statistics”，计算两个加权点配置之间的“最小工作”距离。

函数文档

createAffineTransformer()

Ptr< AffineTransformer > cv::createAffineTransformer

(

bool

fullAffine

)

Python
	cv.createAffineTransformer(	fullAffine	) ->	retval

#include <opencv2/shape/shape_transformer.hpp>

完整构造函数

createChiHistogramCostExtractor()

Ptr< HistogramCostExtractor > cv::createChiHistogramCostExtractor	(	int	nDummies = 25,
		float	defaultCost = 0.2f )

Python
	cv.createChiHistogramCostExtractor(	[, nDummies[, defaultCost]]	) ->	retval

#include <opencv2/shape/hist_cost.hpp>

createEMDHistogramCostExtractor()

Ptr< HistogramCostExtractor > cv::createEMDHistogramCostExtractor	(	int	flag = DIST_L2,
		int	nDummies = 25,
		float	defaultCost = 0.2f )

Python
	cv.createEMDHistogramCostExtractor(	[, flag[, nDummies[, defaultCost]]]	) ->	retval

#include <opencv2/shape/hist_cost.hpp>

createEMDL1HistogramCostExtractor()

Ptr< HistogramCostExtractor > cv::createEMDL1HistogramCostExtractor	(	int	nDummies = 25,
		float	defaultCost = 0.2f )

Python
	cv.createEMDL1HistogramCostExtractor(	[, nDummies[, defaultCost]]	) ->	retval

#include <opencv2/shape/hist_cost.hpp>

createHausdorffDistanceExtractor()

Ptr< HausdorffDistanceExtractor > cv::createHausdorffDistanceExtractor	(	int	distanceFlag = cv::NORM_L2,
		float	rankProp = 0.6f )

Python
	cv.createHausdorffDistanceExtractor(	[, distanceFlag[, rankProp]]	) ->	retval

#include <opencv2/shape/shape_distance.hpp>

createNormHistogramCostExtractor()

Ptr< HistogramCostExtractor > cv::createNormHistogramCostExtractor	(	int	flag = DIST_L2,
		int	nDummies = 25,
		float	defaultCost = 0.2f )

Python
	cv.createNormHistogramCostExtractor(	[, flag[, nDummies[, defaultCost]]]	) ->	retval

#include <opencv2/shape/hist_cost.hpp>

createShapeContextDistanceExtractor()

Ptr< ShapeContextDistanceExtractor > cv::createShapeContextDistanceExtractor	(	int	nAngularBins = 12,
		int	nRadialBins = 4,
		float	innerRadius = 0.2f,
		float	outerRadius = 2,
		int	iterations = 3,
		const Ptr< HistogramCostExtractor > &	comparer = createChiHistogramCostExtractor(),
		const Ptr< ShapeTransformer > &	transformer = createThinPlateSplineShapeTransformer() )

Python
	cv.createShapeContextDistanceExtractor(	[, nAngularBins[, nRadialBins[, innerRadius[, outerRadius[, iterations[, comparer[, transformer]]]]]]]	) ->	retval

#include <opencv2/shape/shape_distance.hpp>

示例

modules/shape/samples/shape_example.cpp.

createThinPlateSplineShapeTransformer()

Ptr< ThinPlateSplineShapeTransformer > cv::createThinPlateSplineShapeTransformer

(

double

regularizationParameter = 0

)

Python
	cv.createThinPlateSplineShapeTransformer(	[, regularizationParameter]	) ->	retval

#include <opencv2/shape/shape_transformer.hpp>

完整构造函数

EMDL1()

float cv::EMDL1	(	InputArray	signature1,
		InputArray	signature2 )

#include <opencv2/shape/emdL1.hpp>

根据 Haibin Ling 和 Kazunori Okuda 的论文“EMD-L1: An efficient and Robust Algorithm for comparing histogram-based descriptors”以及 Elizaveta Levina 和 Peter Bickel 的论文“The Earth Mover's Distance is the Mallows Distance: Some Insights from Statistics”，计算两个加权点配置之间的“最小工作”距离。

参数

signature1	第一个签名，一个单列浮点矩阵。每行是每个 bin 中直方图的值。
signature2	第二个签名，格式和大小与 signature1 相同。