使用MATLAB创建镜像

先决条件： MATLAB中的图像表示

在MATLAB中，图像存储在矩阵中，矩阵的每个元素对应于图像的单个离散像素。如果我们颠倒每一行中像素(矩阵元素)的顺序，我们可以得到给定图像的镜像。

代码1：使用MATLAB库函数

% Read the target image file
img = imread('leaf.png');
  
% Reverse the element in each row
mirror_image = flip(img, 2);
  
% Display the mirror image
imshow(mirror_img); 
title('Mirror image');

代码2：使用矩阵处理

% Read the target image file
img = imread('leaf.png');
  
% Flip the columns left to right
mirror_image = img(:, end :, -1:, 1, :);
  
% Display the mirror image
imshow(mirror_img); 
title('Mirror image');          

代码3：使用矩阵处理(使用循环)

Approach:

• Read the source image file in MATLAB environment
• Get the Dimensions of the image matrix
• Reverse the order of the elements of each row in every image plane
• Display the mirror image

下面是上述方法的实现：

% Read the target image file
img = imread('leaf.png');
  
% Get the dimensions of the image
[x, y, z] =size(img);
  
  
% Reverse elements of each row
% in every image plane
for plane = 1: z
    for i = 1 : x
        len = y; 
        for j = 1 : y
  
            % To reverse the order of the element
            % of a row we can swap the 
            % leftmost element of the row with
            % its rightmost element  
      
            if j < y/2 
                temp = img(i, j, plane);
                img(i, j, plane) = img(i, len, plane);
                img(i, len, plane) = temp;
                len = len - 1;
            end
        end
    end
end
  
  
% Display the mirror image
imshow(img); 
title('Mirror image');

输入图像： leaf.png

输出：