How to read multiple image directory with for loop

Question

MD HASIBUR RAHMAN LEMON 2020-10-15

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/614628-how-to-read-multiple-image-directory-with-for-loop

编辑： Stephen23 2020-10-15

I'm trying to display image with for loop. My code is like that. After the 9 picture the image file name is image_0010. So if i want to display this image now what i need to do? Thanks in advance.

imageArray = [];
 for i = 1:200
     str = int2str(i);
     str = strcat('\','image_000',str,'.png');
     str = strcat('C:\Users\Hasibur Rahman\Documents\MATLAB\ClassWork2_62018040032_哈西\LFPW\trainset', str);
     image = imread(str);
     imageArray = image;
     imageArray = imageArray + image;
     figure,imshow(imageArray);
     title('Original Image!');
     pause(1.5);
 end
 

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Answer 1

Sudhakar Shinde 2020-10-15

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/614628-how-to-read-multiple-image-directory-with-for-loop#answer_514508

在 MATLAB Online 中打开

1 option could be:

if i>9
    str = strcat('\','image_00',str,'.png');
end

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Stephen23 2020-10-15

编辑：Stephen23 2020-10-15

Or just learn how to write simpler and more efficient code (e.g. sprintf).

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Answer 2

Stephen23 2020-10-15

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/614628-how-to-read-multiple-image-directory-with-for-loop#answer_514518

编辑：Stephen23 2020-10-15

在 MATLAB Online 中打开

Rather than fragile string concatenation and ungainly constructs involving int2str or num2str, the neat and efficient MATLAB approach is to use sprintf and fullfile:

D = 'C:\Users\Hasibur Rahman\Documents\MATLAB\ClassWork2_62018040032_哈西\LFPW\trainset';
for k = 1:200
    F = sprintf('image_%04d.png',k);
    I = imread(fullfile(D,F));
    imshow(I);
    pause(1.5)
end