how can i stitch different images)

I want to stitch multiple images. Can You please tell me, how to take the multiple images using for loop.Actually I know how to use for loop but it is getting stiched .

In the Matlab example of '3-D Point Cloud Registration and Stitching'.They used living room data file to load multiple images and for loop to start from the third images by taking first as reference. And they are using point cloud object but did not mention which file type they are using.(bcz JPeg , PNG doesn't work as the down sampling and transform need 3d object). It would be helpful for me how to proceed this problem, like how to create directory and for loop to stitch together. 2)Also it would be great if I come to png or jpg format stiching also

Thank you in advance

Answer 1

[KSSV]

Check the below demo code which stitches (joins) all the RGB images given inbuit in matlab tool boxes. You may take your own directory of images which you want to stitch.

wd = pwd;
cd('C:\Program Files\MATLAB\R2017b\toolbox\images\imdata')
D = dir;
cd(wd)
C = {'.tif';'.jp';'.png';'.bmp'};
idx = false(size(D));
for ii = 1:length(C)
    idx = idx | (arrayfun(@(x) any(strfind(x.name,C{ii})),D));
end
D = D(idx);
L = length(D);
II = cell([],1) ;
count = 0 ;
for i = 1:numel(D)
    file = [D(i).folder,filesep,D(i).name] ;   
    I = imread(file) ;
    % Pick only RGB images 
    if size(I,3)==3
        count = count+1 ;
        II{count} = I ;
    end
end
%% Stitch them 
m = cellfun(@(x) size(x,1), II) ;  % get rows 
n = cellfun(@(x) size(x,2), II) ;  % get rows 
% Get maximum to reisze the images 
nx = max(m) ; 
ny = max(n) ; 
% resize all the images 
II = cellfun(@(x) imresize(x,[nx,ny]),II,'un',0) ;
%% Arrange the cell of images in some order 
R = cellfun(@(x) x(:,:,1),II,'un',0) ; 
G = cellfun(@(x) x(:,:,2),II,'un',0) ; 
B = cellfun(@(x) x(:,:,3),II,'un',0) ; 

R = reshape(R,5,8) ;   % here I choose 5*8..you may choose any so that the elements should not change 
G = reshape(G,5,8) ;
B = reshape(B,5,8) ;

% Make them a matrix 
R = cell2mat(R) ; 
G = cell2mat(G) ; 
B = cell2mat(B) ; 
% make the RGB
I = cat(3,R,G,B) ; 
% display them 
imshow(I)

Also you have a look on _montage_.

[SAMEER BAMBAL]

Thank you for the response.I will try this as well.

I just edited my question.I have query regarding Ply format.

How can i do this.I am able to stitch 2 ply files but for loop i am using , it is not reading the next ply files.(Actually assigning directory might be creating problem). Any help would be appreciated regarding this.