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1 24 MATLAB 1 17
2 MATLAB 18
3 MATLAB download Lena f /l / Z: matlab matlab (color.zip ) Matlab current Directry z: matlab Img=imread( z: matlab Parrots.bmp ); t b workspace 19
4 MATLAB figure(1); imagesc(img); figure(2), subplot(1,3,1), imagesc(img(:, :, 1)); subplot(1,3,2), imagesc(img(:, :, 2)); subplot(1,3,3), imagesc(img(:, :, 3)); colormap(gray); R, G, B ImgG=uint8((0.299*Img(:,:,1)+0.687*Img(:,:,2)+0.114*Img(:,:,3))/3); ( ( 2)+0 114*I ( Imwrite(ImgG, z: matlab ParrotsG.bmp, BMP ); NTSCRGB 20
5 MATLAB ( ) HSV y x 21
6 MATLAB RImgG=255-ImgG; g figure(2), subplot(1,2,1), imagesc(imgg); subplot(1,2,2),, imagesc(rimgg); g colormap( gray ); ImgG16=fix(ImgG./16).*16+16; ImgG8=fix(ImgG./32).*32+32; figure(2), subplot(1,3,1), imagesc(imgg); subplot(1,3,2), imagesc(imgg16); subplot(1,3,3), imagesc(imgg8); colormap( gray ); 22
7 MATLAB (GOG ) = Gain Offset Gamma model Gain:a ImgGA=uint8(ImgG*5); g Offset:b ImgGB=uint8(ImgG-15); Gamma:γ aveimgg=mean(mean(imgg)); ImgGR=uint8(((double(ImgG)/aveImgG).^3)*aveImgG); figure(2), subplot(2,2,1), imagesc(imgg); subplot(2,2,2), 2 2) imagesc(imgga); subplot(2,2,3), imagesc(imggb); subplot(2,2,4), imagesc(imggr); colormap( gray ); 23
8 MATLAB [xsize ysize]=size(imgg); hg=zeros(256,1); for i=1:xsize for j=1:ysize hg(imgg(i, j)+1)=hg(imgg(i, j)+1)+1; figure(2), subplot(1,2,1), imagesc(imgg); g subplot(1,2,2), bar(hg); colormap(gray); 24
9 MATLAB 25
10 MATLAB [xsize,ysize]=size(imgg); len=xsize*ysize; ImgG2=reshape(ImgG,len,1); histogram = hist(imgg2,[0:256-1]); cumhist(1)= histogram(1); for i=2:256 cumhist(i)= cumhist(i-1)+ histogram(i); for i=1:256 trans(i)=round(((256-1)/(len))*cumhist(i)); finalimage=reshape(newimage, xsize, ysize); finalhistogram=hist(newimage,[0:256-1]); figure(1), subplot(3,1,1),stem([0:256-1],histogram) subplot(3,1,2),stem([0:256-1],trans) subplot(3,1,3),stem([0:256-1],finalhistogram) figure(2), subplot(1,2,1),image(imgg),colormap('gray') subplot(1,2,2),image(finalimage),colormap('gray') newimage=zeros(len,1); for i=2:256 transx(i-1)=trans(i); for i=1:len if ImgG2(i)~=0 newimage(i)=transx(imgg2(i)); else newimage(i)=trans(1); 26
11 MATLAB [xsize ysize]=size(imgg); for i=1:xsize for j=1:ysize hg((i-1)*i+j)=double(imgg(i, j)); figure(2), subplot(1,2,1), imagesc(imgg); subplot(1,2,2), hist(hg, 16); colormap(gray); 16 27
12 MATLAB 2 [xsize ysize]=size(imgg); avg= mean(mean(imgg(i, ( ( j))); for i=1:xsize for j=1:ysize if (ImgG(i, j) > avg) ImgBw(i, j)=0; else ImgBw(i, j)=255; figure(2), subplot(1,2,1), imagesc(imgg); subplot(1,2,2), imagesc(imgbw); colormap( gray ); 28
13 MATLAB 29
14 MATLAB ( ) clear all Img=imread( z: MATLAB Parrots.bmp'); ImgG=uint8((0.299*Img(:,:,1)+0.687*Img(:,:,2)+0.114*Img(:,:,3))/3); 30
15 MATLAB Mag=0.25; [xsize,ysize]=size(imgg); X=zeros(2*xsize,2*ysize); for x=1:2*xsize for y=1:2*ysize oldx=round((x-xsize)/mag); xsize)/mag); oldy=round((y-ysize)/mag); oldx=oldx+round(xsize/2); oldy=oldy+round(ysize/2); if oldx>0 & oldx<=xsize & oldy>0 & oldy<=ysize; y X(x,y)=ImgG(oldx,oldy); ScaledImgG=X(xsize-round(xsize*Mag/2)+1: xsize+round(xsize*mag/2),... ysize-round(ysize*mag/2)+1: ysize+round(ysize*mag/2)); figure(2), subplot(1,2,1),, imagesc(imgg);axis([0 g ([ xsize 0 ysize]); subplot(1,2,2), imagesc(uint8(scaledimgg));axis([0 xsize 0 ysize]); colormap('gray'); figure(3), subplot(1,2,1), imagesc(imgg);axis([0 xsize 0 ysize]); subplot(1,2,2), imagesc(uint8(scaledimgg));axis([0 xsize*mag 0 ysize*mag]); colormap('gray'); 31
16 MATLAB 'linear' 'nearest' 'spline' 'cubic' ' [x,y] = meshgrid(-3:1:3); z = peaks(x,y); figure(1), surf(x,y,z) [xi,yi] = meshgrid(-3:0.25:3); zi1=interp2(xyzxiyi'linear'); interp2(x,y,z,xi,yi, zi2 = interp2(x,y,z,xi,yi,'nearest'); zi3 = interp2(x,y,z,xi,yi,'spline'); zi4 = interp2(xyzxiyi'cubic'); interp2(x,y,z,xi,yi, figure(2), subplot(2,2,1), surf(xi,yi,zi1) subplot(2,2,2), surf(xi,yi,zi2) subplot(2,2,3), surf(xi,yi,zi3) subplot(2,2,4), surf(xi,yi,zi4) 32
17 MATLAB 'linear' 'nearest' 'spline' 'cubic' ' [xsize ysize]=size(scaledimgg); [x,y] = meshgrid(1:1:xsize); z = ScaledImgG; figure(1), imagesc(z); colormap('gray'); [xi,yi] = meshgrid(1:0.25:xsize); zi1 = interp2(x,y,z,xi,yi,'linear'); i i ') zi2 = interp2(x,y,z,xi,yi,'nearest'); zi3 = interp2(x,y,z,xi,yi,'spline'); zi4 = interp2(x,y,z,xi,yi,'cubic'); figure(2), subplot(2,2,1),imagesc(zi1); subplot(2,2,2),imagesc(zi2); subplot(2,2,3),imagesc(zi3); subplot(2,2,4),imagesc(zi4); t(224)i ( i4) colormap('gray'); 33
18 MATLAB, 34
19 MATLAB angle=pi/3; xmove=0; ymove=0; [xsize, ysize]=size(imgg); matrix=[cos(angle) sin(angle) xmove; -sin(angle) cos(angle) ymove; 0 0 1]; AffineImgG = zeros(xsize); for i=1:xsize for j=1:ysize A=[i-round(xsize/2) j-round(ysize/2) 1]; origx=matrix*a'; origx=round(origx+[xsize/2; ysize/2; 1]); if origx(1)>0 & origx(1)<=xsize & origx(2)>0 & origx(2)<=ysize; AffineImgG(i, j)=imgg(origx(1), origx(2)); figure(2), subplot(1,2,1), imagesc(imgg); subplot(1,2,2), imagesc(affineimgg); colormap('gray'); 35
20 MATLAB Tsai pin-hole f - k - Cx, Cy Sx, Sy Xu,Yu Xd, Yd X 2 2 d = X u ( 1+ kr ) Yd = Yu ( 1+ kr ) 2 2 r = X d + Y d dx, d dy S X X + f x d y d = Cx Y f = + C y d x d y S Y 36
21 MATLAB ImgG=repmat([ones(32) zeros(32); zeros(32) ones(32)],4,4); cx=0.5; cy=0.5; k=-0.2; [xsize,ysize]=size(imgg); distimgg=zeros(xsize*2,ysize*2); rmax=sqrt((xsize/2)^2+(ysize/2)^2); 2+(ysize/2) 2); for x=1:2*xsize for y=1:2*ysize rdd=((x-cx*ysize)^2+(y-cy*xsize)^2); rd2_norm=rdd/rmax^2; kr2=k*rd2_norm; oldx=round(x+(x-cx*ysize)*kr2); oldy=round(y+(y-cy*xsize)*kr2); if oldx>0 & oldx<=xsize & oldy>0 & oldy<=ysize; distimgg(x,y)=imgg(oldx,oldy); figure(2), subplot(1,2,1), 1) imagesc(imgg);axis([0 xsize 0 ysize]); subplot(1,2,2), imagesc(uint8(distimgg));axis([0 xsize 0 ysize]); colormap('gray'); 37
22 MATLAB y/pukiwiki/index.php?%b8%a6%b5%e6%2fgml%20c%2b%2b%20camera%20php?%b8%a6%b5%e6%2fgml%20c%2b%2b%20camera%20 Calibration%20Toolbox 38
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