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I am trying for crop an image in to two equal parts using for loop but not getting correct ans.

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Durgesh Naik
Durgesh Naik 2015-4-6
评论： Image Analyst 2015-4-7
clc; clear all; close all;
input= imread('120kv x1.25mA(56000)15cm.bmp'); figure(1),imshow(input); a=im2double(input); [x, y, z]=size(a);
y1=round(y/2);
% new=a; for i=1:x; for j=1:z; for k=1:y1; new(x, y1, z)=a(x, y, z); end end end figure, imshow(new);
% new=a; for i=1:x; for j=1:z; for k=1:y1; new1(x,y1,z)=a(x, y1+1, z); end end end figure, imshow(new1);

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Image Analyst
Image Analyst 2015-4-6
Don't use input as the name of your image because it's already the name of a built-in function. You don't need a for loop. Just use regular indexing:
[rows, columns, numberOfColorChannels] = size(rgbImage);
middleCol = floor(columns/2);
leftHalf = rgbImage(:, 1:middleCol, :);
rightHalf = rgbImage(:, (middleCol+1):end, :);
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