OpenSURF (including Image Warp): SurfDescriptor_DecribeInterestPoints(ipts, upright, extended, img, verbose) - File Exchange

Code covered by the BSD License

Highlights from
OpenSURF (including Image Warp)

D=FastHessian_BuildDerivative...
Iout=affine_warp(Iin,M,mode) Affine transformation function (Rotation, Translation, Resize)
PaintSURF(I, ipts) This function PaintSURF will display the image with the found Interest points
ResponseLayerData=FastHessian... % [ResponseLayerData] = FastHessian_ResponseLayer( width,height,step,filter )
SurfDescriptor_DecribeInteres... This function SurfDescriptor_DecribeInterestPoints will ..
[ipts, np]=FastHessian_interp... This function FastHessian_interpolateExtremum will ..
an=FastHessian_getLaplacian(a...
an=FastHessian_getResponse(a,...
an=FastHessian_isExtremum(r, ... This function FastHessian_isExtremum will ..
an=IntegralImage_BoxIntegral(... Get integer coordinates
an=IntegralImage_HaarX(row, c... This function IntegralImage_HaarX will ..
an=IntegralImage_HaarY(row, c... This function IntegralImage_HaarY will ..
descriptor=SurfDescriptor_Get... This function SurfDescriptor_GetDescriptor will ..
example3.m Example 3, Affine registration
ipts=FastHessian_getIpoints(F... filter index map
ipts=OpenSurf(img,Options) This function OPENSURF, is an implementation of SURF (Speeded Up Robust
orientation=SurfDescriptor_Ge... This function SurfDescriptor_GetOrientation will ..
pic=IntegralImage_IntegralIma... This function IntegralImage_IntegralImage will ..
responseMap=FastHessian_build... Calculate responses for the first 4 FastHessianData.octaves:
rl=FastHessian_buildResponseL... This function FastHessian_buildResponseLayer will ..
example2.m
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from OpenSURF (including Image Warp) by Dirk-Jan Kroon
SURF (Speeded Up Robust Features) image feature point detection / matching, as in SIFT

SurfDescriptor_DecribeInterestPoints(ipts, upright, extended, img, verbose)

function ipts = SurfDescriptor_DecribeInterestPoints(ipts, upright, extended, img, verbose)
% This function SurfDescriptor_DecribeInterestPoints will ..
%
% [ipts] = SurfDescriptor_DecribeInterestPoints( ipts,upright,extended,img )
%  
%  inputs,
%    ipts : Interest Points (x,y,scale)
%    bUpright : If true not rotation invariant descriptor
%    bExtended :  If true make a 128 values descriptor
%    img : Integral image
%    verbose : If true show useful information
%  
%  outputs,
%    ipts :  Interest Points (x,y,orientation,descriptor)
%  
% Function is written by D.Kroon University of Twente (July 2010)
if (isempty(fields(ipts))), return; end

if(verbose), h_ang=figure; drawnow, set(h_ang,'name','Angles'); else h_ang=[]; end
if(verbose), h_des=figure; drawnow, set(h_des,'name','Aligned Descriptor XY'); end
   
for i=1:length(ipts)
   % Display only information about the first 40 points
   if(i>40), verbose=false; end
   
   ip=ipts(i);
   % determine descriptor size
   if (extended), ip.descriptorLength = 128; else ip.descriptorLength = 64; end

   % Get the orientation
   if(verbose), figure(h_ang), subplot(5,8,i), end
   ip.orientation=SurfDescriptor_GetOrientation(ip,img,verbose);

   % Extract SURF descriptor
   if(verbose), figure(h_des), subplot(10,4,i), end
   ip.descriptor=SurfDescriptor_GetDescriptor(ip, upright, extended, img,verbose);
   
   ipts(i).orientation=ip.orientation;
   ipts(i).descriptor=ip.descriptor;
end

if(~isempty(h_ang)), figure(h_ang), colormap(jet); end

Highlights from OpenSURF (including Image Warp)

Highlights from
OpenSURF (including Image Warp)