creating .mat file

Sir I have 15 images ,I want to create .mat file so that i can load these images easily,please tell how to create .mat file

Answer 1

[Wayne King]

1.) If the images are the same size you can put them in an array and save that. If different, use a cell array.

2.) You can use matfile() to create a writable .mat file, save data into it, and then load that.

    matobj = matfile('c:\data\mymat','Writable',true);
    matobj.image1 = randn(256,256);
    matobj.image2 = randn(256,256);
    loadimage1 = matobj.image1; 
    % or
    load('mymat.mat','image1');

[FIR]

sir ,cant understand this method,can u suggest some other method please

[Wayne King]

Hi, What can't you understand? Another thing you can do is clear everything in your workspace except the 15 images and use save to save the whole workspace (which contains only the 15 images). I recommend the matfile() approach though

[FIR]

thank u sir,and other question which i have posted,I have aroung 15 slices of images,is it possible to create a single imaged from those slices of images

[Image Analyst]

Single image how? Tiled, like with the montage() function? Or stacked into a volumetric 3D image like with cat(3, .....)?

[FIR]

sir ,it is stacking of an 15 slices image into one,is it possible

Answer 2

[Wayne King]

Yes, you can create an image volume. Create a 3-D array and place the images in that array.

X = zeros(256,256,15);
X(:,:,1) = image1;
X(:,:,2) = image2;

and so on

[FIR]

sir ,but i need only one from from those 15 images forming a cube

[Zoe]

Hi Wayne, is there a way to do it in a loop?? I have around 400 hundred matrices in my workspace and I want to store them in a 3d array. Thank you.

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F