Load clown - University of Minnesota
load clown
whos
image(X)
image(X); colormap(gray)
imshow(X); colormap(gray)
imshow(X,[]); colormap(gray)
imagesc(X); colormap(gray)
figure(1); image(X); colormap(gray)
figure(2); imagesc(X); colormap(gray)
size(colormap)
Y=X;
Y(101:200,:)=zeros(100,320);
close all
image(Y); colormap(gray)
Y=X;
Y=Y(1:2:end,1:2:end);
size(Y)
size(X)
imagesc(Y)
figure(1); imagesc(X)
figure(2); imagesc(Y); colormap(gray)
% colormap gray is already defined for figure(1), since it is not new
I=imread('mandril.png'); %could not find
I=imread('board.tif');
whos
imshow(X,[])
imshow(I,[])
X=I;
X1=X(:,:,1);
imshow(X1,[])
Xgray=rgb2gray(X);
I = imread('board.tif');
J = rgb2gray(I);
edit rgb2gray %the way to learn about the actual code
load clown
X_updown=X(end:-1:1,:);
image(X);colormap(gray)
image(X_updown);colormap(gray)
help meshgrid
size(X)
[Xx,Xy]=meshgrid(1:200,1:320);
Xz=double(X);
mesh(X,Y,Z)
mesh(Xx,Xy,Xz)
% it did not work out since we needed square images… T=zeros(320,320);
T(1:200,:)=X;
X=T
size(X)
[Xx,Xy]=meshgrid(1:320,1:320);
Xz=double(X);
mesh(Xx,Xy,Xz)
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