Eigen3.2.8 for the matrix calculation tool, you need to compile to run, in the official website to find a long time, found that there is no such version, and then upload a, to facilitate the use of people behind the need, you can openCV, PCL and other libraries

eigen3.2.8
..........\.hg_archival.txt
..........\.hgeol
..........\.hgignore
..........\.hgtags
..........\CMakeLists.txt
..........\COPYING.BSD
..........\COPYING.GPL
..........\COPYING.LGPL
..........\COPYING.MINPACK
..........\COPYING.MPL2
..........\COPYING.README
..........\CTestConfig.cmake
..........\CTestCustom.cmake.in
..........\Eigen
..........\.....\Array
..........\.....\CMakeLists.txt
..........\.....\Cholesky
..........\.....\CholmodSupport
..........\.....\Core
..........\.....\Dense
..........\.....\Eigen
..........\.....\Eigen2Support
..........\.....\Eigenvalues
..........\.....\Geometry
..........\.....\Householder
..........\.....\IterativeLinearSolvers
..........\.....\Jacobi
..........\.....\LU
..........\.....\LeastSquares
..........\.....\MetisSupport
..........\.....\OrderingMethods
..........\.....\PaStiXSupport
..........\.....\PardisoSupport
..........\.....\QR
..........\.....\QtAlignedMalloc
..........\.....\SPQRSupport
..........\.....\SVD
..........\.....\Sparse
..........\.....\SparseCholesky
..........\.....\SparseCore
..........\.....\SparseLU
..........\.....\SparseQR
..........\.....\StdDeque
..........\.....\StdList
..........\.....\StdVector
..........\.....\SuperLUSupport
..........\.....\UmfPackSupport
..........\.....\src
..........\.....\...\CMakeLists.txt
..........\.....\...\Cholesky
..........\.....\...\........\CMakeLists.txt
..........\.....\...\........\LDLT.h
..........\.....\...\........\LLT.h
..........\.....\...\........\LLT_MKL.h
..........\.....\...\CholmodSupport
..........\.....\...\..............\CMakeLists.txt
..........\.....\...\..............\CholmodSupport.h
..........\.....\...\Core
..........\.....\...\....\Array.h
..........\.....\...\....\ArrayBase.h
..........\.....\...\....\ArrayWrapper.h
..........\.....\...\....\Assign.h
..........\.....\...\....\Assign_MKL.h
..........\.....\...\....\BandMatrix.h
..........\.....\...\....\Block.h
..........\.....\...\....\BooleanRedux.h
..........\.....\...\....\CMakeLists.txt
..........\.....\...\....\CommaInitializer.h
..........\.....\...\....\CoreIterators.h
..........\.....\...\....\CwiseBinaryOp.h
..........\.....\...\....\CwiseNullaryOp.h
..........\.....\...\....\CwiseUnaryOp.h
..........\.....\...\....\CwiseUnaryView.h
..........\.....\...\....\DenseBase.h
..........\.....\...\....\DenseCoeffsBase.h
..........\.....\...\....\DenseStorage.h
..........\.....\...\....\Diagonal.h
..........\.....\...\....\DiagonalMatrix.h
..........\.....\...\....\DiagonalProduct.h
..........\.....\...\....\Dot.h
..........\.....\...\....\EigenBase.h
..........\.....\...\....\Flagged.h
..........\.....\...\....\ForceAlignedAccess.h
..........\.....\...\....\Functors.h
..........\.....\...\....\Fuzzy.h
..........\.....\...\....\GeneralProduct.h
..........\.....\...\....\GenericPacketMath.h
..........\.....\...\....\GlobalFunctions.h
..........\.....\...\....\IO.h
..........\.....\...\....\Map.h
..........\.....\...\....\MapBase.h
..........\.....\...\....\MathFunctions.h
..........\.....\...\....\Matrix.h
..........\.....\...\....\MatrixBase.h
..........\.....\...\....\NestByValue.h
..........\.....\...\....\NoAlias.h
..........\.....\...\....\NumTraits.h
..........\.....\...\....\PermutationMatrix.h
..........\.....\...\....\PlainObjectBase.h

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