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    發(fā)布日期: 2021-06-07
  • 語言: Matlab
  • 標(biāo)簽: 光流??KLT??matlab??

資源簡介

有兩篇文章:Pyramidal Implementation of the Lucas Kanade Feature Tracker Description of the algorithm 以及它的翻譯(當(dāng)然不是我翻譯的 如果有侵權(quán)的話聯(lián)系我我就刪啊 QAQ) 還有matlab計(jì)算光流 看文章有助于理解程序  ̄▽ ̄ y

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代碼片段和文件信息

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%DENSE?LUCAS?KANADE?PYRAMIDAL?+?ITERATIVE?REFINMENT?
%J.MARZAT?-?ENSEM?/?INRIA?Rocquencourt?(France)?julien.marzat@gmail.com
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Data?acquisition
im1=single((imread(‘yos_img_10.pgm‘)));
im2=single((imread(‘yos_img_11.pgm‘)));
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%parameters?:?levels?number?window?size?iterations?number?regularization
numLevels=3;?%Lm:height?of?the?pyramid.(234)
window=9;%?integration?window
iterations=1;
alpha?=?0.001;

hw?=?floor(window/2);?%WxWy?
t0=clock;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%pyramids?creation
pyramid1?=?im1;
pyramid2?=?im2;
%init
for?i=2:numLevels
????im1?=?impyramid(im1?‘reduce‘);
????im2?=?impyramid(im2?‘reduce‘);
????pyramid1(1:size(im11)?1:size(im12)?i)?=?im1;
????pyramid2(1:size(im21)?1:size(im22)?i)?=?im2;
end;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Processing?all?levels
for?p?=?1:numLevels
???
????%current?pyramid
????im1?=?pyramid1(1:(size(pyramid11)/(2^(numLevels?-?p)))?1:(size(pyramid12)/(2^(numLevels?-?p)))?(numLevels?-?p)+1);
????im2?=?pyramid2(1:(size(pyramid21)/(2^(numLevels?-?p)))?1:(size(pyramid22)/(2^(numLevels?-?p)))?(numLevels?-?p)+1);
???????
????%init
????if?p==1
????u=zeros(size(im1));%Vx
????v=zeros(size(im1));%Vy
????else??
????%resizing
????u?=?2?*?imresize(usize(u)*2‘bilinear‘);???
????v?=?2?*?imresize(vsize(v)*2‘bilinear‘);
????end
????
????%refinment?loop
????for?r?=?1:iterations
???
????u=round(u);
????v=round(v);
????
????%every?pixel?loop
????????for?i?=?1+hw:size(im11)-hw
????????????for?j?=?1+hw:size(im22)-hw
????????????patch1?=?im1(i-hw:i+hw?j-hw:j+hw);
??????
????????????%moved?patch?
????????????lr?=?i-hw+v(ij);
????????????hr?=?i+hw+v(ij);
????????????lc?=?j-hw+u(ij);
????????????hc?=?j+hw+u(ij);
???????????
??????????????????if?(lr??size(im11))||(lc??size(im12))??
??????????????????%Regularized?least?square?processing
??????????????????else
??????????????????patch2?=?im2(lr:hr?lc:hc);
??????
??????????????????fx?=?conv2(patch1?0.25*?[-1?1;?-1?1])?+?conv2(patch2?0.25*[-1?1;?-1?1]);
??????????????????fy?=?conv2(patch1?0.25*?[-1?-1;?1?1])?+?conv2(patch2?0.25*[-1?-1;?1?1]);
??????????????????ft?=?conv2(patch1?0.25*ones(2))?+?conv2(patch2?-0.25*ones(2));

??????
??????????????????Fx?=?fx(2:window-12:window-1)‘;
??????????????????Fy?=?fy(2:window-12:window-1)‘;
??????????????????Ft?=?ft(2:window-12:window-1)‘;

??????????????????A?=?[Fx(:)?Fy(:)];??????
??????????????????G=A‘*A;
??????????????
??????????????????G(11)=G(11)+alpha;?G(22)=G(22)+alpha;
??????????????????U=1/(G(11)*G(22)-G(12)*G(21))*[G(22)?-G(12);-G(21)?G(11)]*A‘*-Ft(:);
??????????????????u(i

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????1334??2010-03-08?04:31??LKPR-marzat\license.txt

?????文件???????3324??2013-10-15?09:41??LKPR-marzat\LKPR.m

?????文件?????270836??2012-12-11?18:17??LKPR-marzat\Pyramidal_Implementation_of_the_Lucas_Kanade_Feature_Tracker_Description_of_the_algorithm.pdf

?????文件???????1285??2008-04-30?15:34??LKPR-marzat\showmap3.m

?????文件??????79647??2003-04-18?21:18??LKPR-marzat\yos_img_10.pgm

?????文件??????79647??2003-04-18?21:18??LKPR-marzat\yos_img_11.pgm

?????文件?????350669??2012-12-11?21:13??LKPR-marzat\基于金字塔的LK特征點(diǎn)跟蹤算法.pdf

?????目錄??????????0??2013-10-15?13:30??LKPR-marzat

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

???????????????786742????????????????????8


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