This is the c to achieve sift algorithm for stitching panorama of the open-source projects to find control points in Hugin (feature matching).

autopano-sift-C
...............\APSCmain.c
...............\APSCpp
...............\......\ANN
...............\......\...\ANN.cpp
...............\......\...\ANN.h
...............\......\...\ANNperf.h
...............\......\...\ANNx.h
...............\......\...\bd_fix_rad_search.cpp
...............\......\...\bd_pr_search.cpp
...............\......\...\bd_search.cpp
...............\......\...\bd_tree.cpp
...............\......\...\bd_tree.h
...............\......\...\brute.cpp
...............\......\...\CMakeLists.txt
...............\......\...\Copyright.txt
...............\......\...\kd_dump.cpp
...............\......\...\kd_fix_rad_search.cpp
...............\......\...\kd_fix_rad_search.h
...............\......\...\kd_pr_search.cpp
...............\......\...\kd_pr_search.h
...............\......\...\kd_search.cpp
...............\......\...\kd_search.h
...............\......\...\kd_split.cpp
...............\......\...\kd_split.h
...............\......\...\kd_tree.cpp
...............\......\...\kd_tree.h
...............\......\...\kd_util.cpp
...............\......\...\kd_util.h
...............\......\...\License.txt
...............\......\...\perf.cpp
...............\......\...\pr_queue.h
...............\......\...\pr_queue_k.h
...............\......\...\ReadMe.txt
...............\......\ANNkd_wrap.cpp
...............\......\APSCpp.c
...............\......\APSCpp_main.c
...............\......\CamLens.c
...............\......\CMakeLists.txt
...............\......\HermiteSpline.c
...............\......\HermiteSpline.h
...............\......\README-autopano-sift-c.txt
...............\......\saInterp.c
...............\......\saInterp.h
...............\......\saRemap.c
...............\......\sphereAlign.h
...............\AreaFilter.c
...............\ArrayList.c
...............\autopano-c-complete
...............\autopano-c-complete.sh
...............\autopano-c-complete.vbs
...............\AutoPano.c
...............\AutoPanoSift.h
...............\BondBall.c
...............\ChangeLog
...............\CMakeLists.txt
...............\CMakeModules
...............\............\FindJPEG.cmake
...............\............\FindLibraryWithDebug.cmake
...............\............\FindLibXml2.cmake
...............\............\FindPackageHandleStandardArgs.cmake
...............\............\FindPANO13.cmake
...............\............\FindPNG.cmake
...............\............\FindTIFF.cmake
...............\............\FindZLIB.cmake
...............\config.h.in.cmake
...............\DisplayImage.c
...............\doc
...............\...\autopano-c-complete.1
...............\...\autopano-c-complete.txt
...............\...\autopano-sift-c.7
...............\...\autopano-sift-c.txt
...............\...\autopano.1
...............\...\autopano.txt
...............\...\generatekeys.1
...............\...\generatekeys.txt
...............\GaussianConvolution.c
...............\GenerateKeys.c
...............\HashTable.c
...............\ImageMap.c
...............\ImageMatchModel.c
...............\KDTree.c
...............\KeypointXML.c
...............\LICENSE
...............\LoweDetector.c
...............\MatchKeys.c
...............\Random.c
...............\RANSAC.c
...............\README
...............\README.1ST
...............\ScaleSpace.c
...............\SimpleMatrix.c
...............\TestArray.c
...............\TestKDTree.c
...............\TestRandom.c
...............\Transform.c
...............\Utils.c

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