function?Iout=affine_warp（IinMmode）
%?Affine?transformation?function?（Rotation?Translation?Resize）
%?This?function?transforms?a?volume?with?a?3x3?transformation?matrix?
%
%?Iout=affine_warp（IinMinvmode）
%
%?inputs
%???Iin:?The?input?image
%???Minv:?The?（inverse）?3x3?transformation?matrix
%???mode:?If?0:?linear?interpolation?and?outside?pixels?set?to?nearest?pixel
%????????????1:?linear?interpolation?and?outside?pixels?set?to?zero
%????????????（cubic?interpolation?only?support?by?compiled?mex?file）
%????????????2:?cubic?interpolation?and?outsite?pixels?set?to?nearest?pixel
%????????????3:?cubic?interpolation?and?outside?pixels?set?to?zero
%
%?output
%???Iout:?The?transformed?image
%
%?example
%???%?Read?image
%???I=im2double（imread（‘lenag2.png‘））
%???%?Make?a?transformation?matrix
%???M=make_transformation_matrix（[2?3]2[1.0?1.1]）;
%???%?Transform?the?image
%???Iout=affine_warp（IM0）
%???%?Show?the?image
%???figure?imshow（Iout）;
%
%?Function?is?written?by?D.Kroon?University?of?Twente?（February?2009）
??
%?Make?all?xy?indices
[xy]=ndgrid（0:size（Iin1）-10:size（Iin2）-1）;

%?Calculate?center?of?the?image
%?mean=?size（Iin）/2;
%?Make?center?of?the?image?coordinates?00
%xd=x-mean（1）;?
%yd=y-mean（2）;
xd=x;
yd=y;

%?Calculate?the?Transformed?coordinates
Tlocalx?=?mean（1）?+?M（11）?*?xd?+?M（12）?*yd?+?M（13）?*?1;
Tlocaly?=?mean（2）?+?M（21）?*?xd?+?M（22）?*yd?+?M（23）?*?1;

switch（mode）
	case?0
		Interpolation=‘bilinear‘;
		Boundary=‘replicate‘;
	case?1
		Interpolation=‘bilinear‘;
		Boundary=‘zero‘;
	case?2
		Interpolation=‘bicubic‘;
		Boundary=‘replicate‘;
	otherwise
		Interpolation=‘bicubic‘;
		Boundary=‘zero‘;
end
Iout=image_interpolation（IinTlocalxTlocalyInterpolationBoundary）;

function?Iout?=?image_interpolation（IinTlocalxTlocalyInterpolationBoundaryImageSize）
%?This?function?is?used?to?transform?an?2D?image?in?a?backwards?way?with?an
%?transformation?image.
%
%???Iout?=?image_interpolation（IinTlocalxTlocalyInterpolationBoundaryImageSize）
%
%?inputs
%	???Iin?:?2D?greyscale?or?color?input?image
%	???TlocalxTlocaly?:?（Backwards）?Transformation?images?for?all?image?pixels
%	???Interpolation:
%???????‘nearest‘????-?nearest-neighbor?interpolation
%???????‘bilinear‘???-?bilinear?interpolation
%???????‘bicubic‘????-?cubic?interpolation;?the?default?method
%??????Boundary:
%???????‘zero‘???????-?outside?input?image?are?implicilty?assumed?to?be?zero
%???????‘replicate‘??-?Input?array?values?outside?the?bounds?of?the?array
%??????????????????????are?assumed?to?equal?the?nearest?array?border?value
%	（optional）
%	???ImageSize:????-?Size?of?output?image
%?outputs
%??	???Iout?:?The?transformed?image
%
%?Function?is?written?by?D.Kroon?University?of?Twente?（September?2010）

if（~isa（Iin‘double‘））?Iin=double（Iin）;?end
if（nargin<6）?ImageSize=[size（Iin1）?size（Iin2）];?end
if（ndims（Iin）==2）?lo=1;?else?lo=3;?end

switch（lower（Interpolation））
????cas

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????9721??2010-09-06?13:04??QRC_BRISK\affine_warp.m

?????文件??????19029??2011-09-22?17:24??QRC_BRISK\brisk.cpp

?????文件?????109568??2011-09-22?17:24??QRC_BRISK\brisk.mexw32

?????文件???????2972??2011-09-22?12:14??QRC_BRISK\brisk_interface.h

?????文件?????424843??2014-12-24?10:43??QRC_BRISK\data\da.png

?????文件?????239755??2014-11-06?15:40??QRC_BRISK\data\lena1.png

?????文件?????211716??2014-11-06?15:40??QRC_BRISK\data\lena2.png

?????文件??????72037??2014-12-24?10:43??QRC_BRISK\data\xiao.png

?????文件???????4970??2015-01-03?21:19??QRC_BRISK\demo.asv

?????文件?????137216??2011-09-22?17:24??QRC_BRISK\demo.exe

?????文件???????5023??2015-01-03?21:48??QRC_BRISK\demo.m

?????文件????????363??2015-01-03?21:44??QRC_BRISK\filter.asv

?????文件????????381??2015-01-03?21:46??QRC_BRISK\filter.m

?????文件?????370688??2011-09-22?12:14??QRC_BRISK\opencv_calib3d220.dll

?????文件????2010624??2011-09-22?12:14??QRC_BRISK\opencv_core220.dll

?????文件?????637440??2011-09-22?12:14??QRC_BRISK\opencv_features2d220.dll

?????文件??????22016??2011-09-22?12:14??QRC_BRISK\opencv_flann220.dll

?????文件?????776192??2011-09-22?12:14??QRC_BRISK\opencv_highgui220.dll

?????文件????1242112??2011-09-22?12:14??QRC_BRISK\opencv_imgproc220.dll

?????文件???????4055??2014-11-26?15:52??QRC_BRISK\QRC_ransac.m

?????文件???????2681??2014-12-07?18:45??QRC_BRISK\SIFTMATCH.asv

?????文件???????2693??2014-12-13?18:23??QRC_BRISK\SIFTMATCH.m

?????目錄??????????0??2015-01-03?20:25??QRC_BRISK\data

?????目錄??????????0??2015-01-03?21:24??QRC_BRISK

-----------?---------??----------?-----??----

??????????????6306095????????????????????24