column shuffling of a matrix

2015 3 12
2 个回答
回答已采纳
更新时间：2015 3 12
5 次查看（30 天）

0 个投票

Please let me know if i want column shuffling instead of rows what changes i must need in this code.
% for the color image, for even rows and cols
% Need to perform switching of rows at each channel
A = imread('Untitled.png');
[m, n, c] = size(A);
temp= zeros(m,n);
for i = 1 : c
A1 = A(:, :, i);
a1 = A1(1 : m/2, :);
a2 = A1(end: -1 : m/2+1, :);
temp(1:2:end,:) = a1;
temp(2:2:end,:) = a2;
A(:, :, i) = temp;
end

请先登录，再回答此问题。

 采纳的回答

Andrei Bobrov
Andrei Bobrov 2015-3-12
编辑：Andrei Bobrov 2015-3-12

0 个投票

A = imread('Untitled.png');
m = size(A);
out = zeros(m);
m1 = round(m(2)/2);
out(:,1:2:end,:) = A(:,1:m1,:);
out(:,2:2:end,:) = A(:,end:-1:m1+1,:);

更多回答（1 个）

Michael Haderlein
Michael Haderlein 2015-3-12
编辑：Guillaume 2015-3-12

0 个投票

Please use the {}Code button to make your code readable.
If this code is sorting the rows in the manner you want, you can change it to do the same with columns this way:
A = imread('Untitled.png');
[m, n, c] = size(A);
temp= zeros(m,n);
for i = 1 : c
A1 = A(:, :, i);
a1 = A1(:, 1 : n/2);
a2 = A1(:, end: -1 : n/2+1);
temp(:, 1:2:end) = a1;
temp(:, 2:2:end) = a2;
A(:, :, i) = temp;
end

类别

在 帮助中心 和 File Exchange 中查找有关 Interpolation 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by