如何在for循环中读取后立即存储图像？ [英] how to store the image immediately after reading it in a for loop?

问题描述

我尝试了以下程序来读取多张图像（约300张图像）。现在我希望在将每个图像读取到某个位置之后立即存储这些图像，其名称为 g1 ， g2 ， g3 ...是否可以循环执行此操作？
这是我的尝试：

I tried the following program for reading multiple images(about 300 images). Now I want to store these images immediately after reading each to some location by some name as g1,g2,g3... Is it possible to do this in a loop? Here is my attempt:

for i=1:5
    m=imread(['C:\Users\shree\Desktop\1\im' num2str(i) '.jpg']);
    figure,imshow(m);
end

推荐答案

我强烈建议您存储它们在一个单元格数组中：

I highly recommend that you store them in a cell array:

for k=1:5
    image_path = ['C:\Users\shree\Desktop\1\im' num2str(i) '.jpg']; %// I have moved this to be on its own line as it will make debugging easier. You don't have to, but I think it's a good idea.
    images_all{k}  = imread(image_path);
end

使用 eval 创建变量名称，如 g1 ， g2 等，您使用无法管理的变量来污染工作区。另外，如果它们都在单元格数组中，则可以很容易地将相同的函数应用于循环中或使用 cellfun 。

By using eval to create variable names like g1, g2 etc you pollute your workspace with an unmanageable amount of variables. Plus if they are all in a cell array then it's really easy to apply the same function to each of them either in a loop or with cellfun.

例如，如果你想现在将它们全部转换为灰度：

For example if you want to convert them all to greyscale now:

images_grey = cellfun(@rgb2gray, images_all, 'UniformOutput', false);

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