배경제거 by accord 

// create filter
FlatFieldCorrection filter = new FlatFieldCorrection( bgImage );
// process image
filter.ApplyInPlace( sourceImage );

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ofImage ofxOpenCV

//-------------------------------------------------------------- void ofApp::setup(){     image1.load("D:/2.bmp");     image1.mirror(FALSE, TRUE);     image1.resize(512, 512);     image1.crop(10, 10, 256, 256);     image1.saveImage("D:/after.png", OF_IMAGE_QUALITY_BEST); } //-------------------------------------------------------------- void ofApp::update(){     } //-------------------------------------------------------------- void ofApp::draw(){     image1.draw(0, 0); }
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freq_diffusion.m

function r=freq_diffusion(p,l,t) #freq_diffusion(gaussian1d(100,50,5),0.5,100); n=length(p); q0=fft(p); Q=q0; g=[1-l,l/2,zeros(1,n-3),l/2]'; G=fft(g); #[X,T]=meshdom(1:n,1:t); for n=1:(t-1) q=q0.*(G.^n); # Q=[q,Q]; plot(1:length(q),sqrt(real(q).^2+imag(q).^2)); end #mesh(T,X,norm(Q')); r=ifft(q);
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