83 lines
2.7 KiB
ReStructuredText
83 lines
2.7 KiB
ReStructuredText
Cost Matrix for Histograms Common Interface
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===========================================
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.. highlight:: cpp
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A common interface is defined to ease the implementation of some algorithms pipelines, such
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as the Shape Context Matching Algorithm. A common class is defined, so any object that implements
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a Cost Matrix builder inherits the
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:ocv:class:`HistogramCostExtractor` interface.
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HistogramCostExtractor
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----------------------
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.. ocv:class:: HistogramCostExtractor : public Algorithm
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Abstract base class for histogram cost algorithms. ::
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class CV_EXPORTS_W HistogramCostExtractor : public Algorithm
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{
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public:
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CV_WRAP virtual void buildCostMatrix(InputArray descriptors1, InputArray descriptors2, OutputArray costMatrix) = 0;
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CV_WRAP virtual void setNDummies(int nDummies) = 0;
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CV_WRAP virtual int getNDummies() const = 0;
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CV_WRAP virtual void setDefaultCost(float defaultCost) = 0;
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CV_WRAP virtual float getDefaultCost() const = 0;
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};
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NormHistogramCostExtractor
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--------------------------
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.. ocv:class:: NormHistogramCostExtractor : public HistogramCostExtractor
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A norm based cost extraction. ::
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class CV_EXPORTS_W NormHistogramCostExtractor : public HistogramCostExtractor
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{
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public:
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CV_WRAP virtual void setNormFlag(int flag) = 0;
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CV_WRAP virtual int getNormFlag() const = 0;
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};
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CV_EXPORTS_W Ptr<HistogramCostExtractor>
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createNormHistogramCostExtractor(int flag=cv::DIST_L2, int nDummies=25, float defaultCost=0.2);
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EMDHistogramCostExtractor
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-------------------------
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.. ocv:class:: EMDHistogramCostExtractor : public HistogramCostExtractor
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An EMD based cost extraction. ::
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class CV_EXPORTS_W EMDHistogramCostExtractor : public HistogramCostExtractor
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{
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public:
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CV_WRAP virtual void setNormFlag(int flag) = 0;
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CV_WRAP virtual int getNormFlag() const = 0;
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};
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CV_EXPORTS_W Ptr<HistogramCostExtractor>
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createEMDHistogramCostExtractor(int flag=cv::DIST_L2, int nDummies=25, float defaultCost=0.2);
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ChiHistogramCostExtractor
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-------------------------
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.. ocv:class:: ChiHistogramCostExtractor : public HistogramCostExtractor
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An Chi based cost extraction. ::
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class CV_EXPORTS_W ChiHistogramCostExtractor : public HistogramCostExtractor
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{};
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CV_EXPORTS_W Ptr<HistogramCostExtractor> createChiHistogramCostExtractor(int nDummies=25, float defaultCost=0.2);
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EMDL1HistogramCostExtractor
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---------------------------
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.. ocv:class:: EMDL1HistogramCostExtractor : public HistogramCostExtractor
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An EMD-L1 based cost extraction. ::
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class CV_EXPORTS_W EMDL1HistogramCostExtractor : public HistogramCostExtractor
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{};
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CV_EXPORTS_W Ptr<HistogramCostExtractor>
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createEMDL1HistogramCostExtractor(int nDummies=25, float defaultCost=0.2);
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