This code is an implementation of SURF (Speeded Up Robust Features). SURF will detect landmark points in an image, and describe the points by a vector which is robust against (a little bit) rotation,scaling and noise. It can be used in the same way as SIFT (Scale-invariant feature transform) which is patented. Thus to align (register) two or more images based on corresponding points.

OpenSurf.m
SubFunctions\FastHessian_BuildDerivative.m
............\FastHessian_buildResponseLayer.m
............\FastHessian_buildResponseMap.m
............\FastHessian_getIpoints.m
............\FastHessian_getLaplacian.m
............\FastHessian_getResponse.m
............\FastHessian_interpolateExtremum.m
............\FastHessian_isExtremum.m
............\FastHessian_ResponseLayer.m
............\IntegralImage_BoxIntegral.m
............\IntegralImage_HaarX.m
............\IntegralImage_HaarY.m
............\IntegralImage_IntegralImage.m
............\PaintSURF.m
............\SurfDescriptor_DecribeInterestPoints.m
............\SurfDescriptor_GetDescriptor.m
............\SurfDescriptor_GetOrientation.m
TestImages\lena1.png
..........\lena2.png
..........\test.png
..........\testc1.png
..........\testc2.png
WarpFunctions\affine_warp.m
example2.m
example3.m
license.txt

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