//??局部圖像特征提取與匹配????
//??Author:??www.icvpr.com??
//??Blog??:??http://blog.csdn.net/icvpr??
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#include?“LocalFeature.h“??
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Feature::Feature（）??
{??
????m_detectType?=?“SIFT“;??
????m_extractType?=?“SIFT“;??
????m_matchType?=?“FruteForce“;??
????initModule_nonfree（）;???
}??
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Feature::~Feature（）??
{??
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}??
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Feature::Feature（const?string&?detectType?const?string&?extractType?const?string&?matchType）??
{??
????assert（!detectType.empty（））;??
????assert（!extractType.empty（））;??
????assert（!matchType.empty（））;??
??
????m_detectType?=?detectType;??
????m_extractType?=?extractType;??
????m_matchType?=?matchType;??
????initModule_nonfree（）;???
}??
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void?Feature::detectKeypoints（const?Mat&?image?std::vector&?keypoints）???
{??
????assert（image.type（）?==?CV_8UC1）;??
????assert（!m_detectType.empty（））;??
??
????keypoints.clear（）;??
????m_detector?=?FeatureDetector::create（m_detectType）;??
????m_detector->detect（image?keypoints）;??
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}??
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void?Feature::extractDescriptors（const?Mat&?image?std::vector&?keypoints?Mat&?descriptor）??
{??
????assert（image.type（）?==?CV_8UC1）;??
????assert（!m_extractType.empty（））;??
??
????m_extractor?=?DescriptorExtractor::create（m_extractType）;??
????m_extractor->compute（image?keypoints?descriptor）;??
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}??
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void?Feature::bestMatch（const?Mat&?queryDescriptor?Mat&?trainDescriptor?std::vector&?matches）???
{??
????assert（!queryDescriptor.empty（））;??
????assert（!trainDescriptor.empty（））;??
????assert（!m_matchType.empty（））;??
??
????matches.clear（）;??
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????m_matcher?=?DescriptorMatcher::create（m_matchType）;??
????m_matcher->add（std::vector（1?trainDescriptor））;??
????m_matcher->train（）;??
????m_matcher->match（queryDescriptor?matches）;??
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}??
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void?Feature::knnMatch（const?Mat&?queryDescriptor?Mat&?trainDescriptor?std::vector>&?matches?int?k）??
{??
????assert（k?>?0）;??
????assert（!queryDescriptor.empty（））;??
????assert（!trainDescriptor.empty（））;??
????assert（!m_matchType.empty（））;??
??
????matches.clear（）;??
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????m_matcher?=?DescriptorMatcher::create（m_matchType）;??
????m_matcher->add（std::vector（1?trainDescriptor））;??
????m_matcher->train（）;??
????m_matcher->knnMatch（queryDescriptor?matches?k）;??
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}??
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void?Feature::saveKeypoints（const?Mat&?image?const?vector&?keypoints?const?string&?saveFileName）??
{??
????assert（!saveFileName.empty（））;??
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????Mat?outImage;??
????cv::drawKeypoints（image?keypoints?outImage?Scalar（2552550）?DrawMatchesFlags::DRAW_RICH_KEYPOINTS?）;??
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????//??
????string?saveKeypointsImgName?=?saveFileName?+?“_“?+?m_detectType?+?“.jpg“;??
????imwrite（saveKeypointsImgName?outImage）;??
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}??
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void?Feature::saveMatches（const?Mat&?queryImage??
????????????????????????????const?vector&?queryKeypoints??
????????????????????????????const?Mat&?trainImage??
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