vector form of cuboid.

I'm in need to concatenate the pixel values of 3 images(16 X 16 patches in an image sequence) which is stored in a folder,along with row order to form a vector component.How to access those images to form a vector?

Answer 1

[Matt J]

If I've understood your question, you would

(1) use IMREAD to read the images from the folders into MATLAB matrix variables A,B,C.

(2) Concatenate them as D=[A,B,C]

(3) Change D to a vector by doing D=D(:), or D=reshape(D,[],1) or similar.

[Berbia]

Thank u..I got the vector, but in my work it is just one vector component. I have to repeat the same for images recorded at different times for whole vector. Instead of specifying names explicitly I use the code and decided to increment no for read next images.

no=0;

n={sprintf('Crop_seq %4.4d.png', no+1);sprintf('Crop_seq %4.4d.png', no+2);sprintf('Crop_seq %4.4d.png', no+3)};

A=imread(n{1});

I don't know how to represent the whole vector?Pls help...

[Matt J]

It's less and less clear to me what you mean by "vector component". What's wrong with the following?

no=0;
n={sprintf('Crop_seq %4.4d.png', no+1);sprintf('Crop_seq %4.4d.png', no+2);sprintf('Crop_seq %4.4d.png', no+3)};

A=imread(n{1});
B=imread(n{2});
C=imread(n{3});

wholevector = reshape([A,B,C],[],1);

[Berbia]

What I have expect is the following code...

 for no=1:5  n=sprintf('Crop_seq%4.4d.png',no+1);sprintf('Crop_seq%4.4d.png',no+2);
sprintf('Crop_seq %4.4d.png', no+3)};
    A=imread(n{1});
    B=imread(n{2});
    C=imread(n{3});
    wholevector(no) = {reshape([A,B,C],[],1)};
end
D=[wholevector{1};wholevector{2};wholevector{3};wholevector{4};
wholevector{5}];

I got it now. Thanks for ur guidance..

[Matt J]

OK, I'm glad. FYI, you can create D more briefly use comma-separated-list features of MATLAB:

D=vertcat(wholevector{:});

[Berbia]

Helpful information...! Thanks a lot..