How to save all jpg data after preprocessing into workspace?

Question

Ou Jin Sheng 2021-11-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1579799-how-to-save-all-jpg-data-after-preprocessing-into-workspace

评论： Ou Jin Sheng 2021-11-6

%% preprocess
%Ou Jin Sheng 
%B041820063
clc ;
clear;
home;
%loading file 
filelist = dir('*.jpg');
L = length(filelist);
for  i = 1:60
    CurrentImage{i} =imread([ num2str(i) '.jpg']);%read image based
    
    %%code here 
    
   
    %%implement preprocessed image onto current image 
    Complete_Output{i} = CurrentImage{i} + FinalOutput;
    
    %%Write complete_output into workspace 
     imwrite(Complete_Output, {i}); %error here
       
end
Currently i am reading 60images from local files, after preprocessing, i need to save all 60 images into ...
workspace, how can i do it? Please advice. Much appreciate.

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Answer 1

Geoff Hayes 2021-11-5

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1579799-how-to-save-all-jpg-data-after-preprocessing-into-workspace#answer_824669

在 MATLAB Online 中打开

@Ou Jin Sheng - imwrite writes data to a file as

imwrite(dataArrayOrMatrix, 'filename')

Your code is doing something different

imwrite(Complete_Output, {i}); %error here

I suspect that you want to do something like

imwrite(Complete_Output{i}, sprintf('updatedImage%d.jpg',i));

or something similar to write the updated image to file (not the workspace).

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Ou Jin Sheng 2021-11-6

Thank you @Geoff Hayes, It works for me. Just that it write to file.

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Answer 2

yanqi liu 2021-11-6

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1579799-how-to-save-all-jpg-data-after-preprocessing-into-workspace#answer_824939

编辑：yanqi liu 2021-11-6

在 MATLAB Online 中打开

clc ;
clear all;
home;
%loading file
filelist = dir('*.jpg');
L = length(filelist);
for  i = 1:60
    CurrentImage{i} =imread([ num2str(i) '.jpg']);%read image based
    
    %%code here
    
    
    %%implement preprocessed image onto current image
    Complete_Output{i} = CurrentImage{i} + FinalOutput;
    
    %%Write complete_output into workspace
    %imwrite(Complete_Output, {i}); %error here
    
    imwrite(mat2gray(Complete_Output{i}), sprintf('./%03d.png', i));
    
end