Splitting image in matlab

31 次查看（过去 30 天）
Lucas Buckels
Lucas Buckels 2017-3-28
回答： Guillaume 2017-3-28
Need to split an image in matlab into 4 quadrants and swap the top left and bottom left quadrants

请先登录，再回答此问题。

回答（3 个）

Walter Roberson
Walter Roberson 2017-3-28
Hint: [end/2+1:end,1:end/2]
Image Analyst
Image Analyst 2017-3-28
Did you try indexing/assignment:
rgbImage = imread('peppers.png'); % Read input image
% Get the dimensions of the image.
% numberOfColorChannels should be = 1 for a gray scale image, and 3 for an RGB color image.
[rows, columns, numberOfColorChannels] = size(rgbImage);
outputImage = rgbImage; % Initialize
middleRow = ceil(rows/2);
middleColumn = ceil(columns/2);
% Paste lower left onto upper left.
outputImage(1:middleRow, 1:middleColumn, :) = rgbImage(middleRow+1:end, 1:middleColumn, :);
% Paste upper left onto lower left.
outputImage(middleRow+1:end, 1:middleColumn, :) = rgbImage(1:middleRow, 1:middleColumn, :);
imshow(outputImage);
Guillaume
Guillaume 2017-3-28
Another way:
[height, width, ~] = size(yourimage);
splitimage = mat2cell(yourimage, [ceil(height/2), floor(height/2)], [ceil(width/2), floor(width/2)], size(yourimage, 3));
swappedimage = cell2mat(rot90(splitimage, 2)');

类别

在 Help Center 和 File Exchange 中查找有关 Image Processing and Computer Vision 的更多信息

标签

尚未输入任何标签。

产品

Community Treasure Hunt

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

Start Hunting!

Translated by