How to use ''offset'' to determine its position ?

Kshitij Singh answered . 2024-12-21 17:05:23

• nr is the qty of rows to remove
• offset defines the upper section rows ( 1 to offset) kept in the output image
• the removed rows are "1+offset" to "offset+nr"

files = dir('handheld*.jpg');      % as example : only jpeg files with "handheld" in the filename

% main loop
Filename = files.name;
im = imread(Filename);   % save for future use
    
% plot original image
figure(1), imagesc(im);

% apply suggested code % 
[H,L] = size(im);   % size of original image

% parameters for rows removal
offset = 100;       % output image / upper part  : we keep rows "1" to "offset" of the original image
nr = 200;           % output image / lower part  : we keep only rows "1+offset+nr" to "H" (lower end of the original image)
% so basically the new image is the input image from which rows "1+offset" to "offset+nr" have been removed, which is indeed "nr" rows.

im_rem(1:offset,:,:) = im(1:offset,:,:);                 % upper part (above removed pixel rows)
im_rem(offset+1:H-nr,:,:) = im(offset+nr+1:H,:,:);       % lower part (below removed pixel rows) 

figure(2), imagesc(im_rem);

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