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in workspace i have "dinfo" having 11x1 struct as shown in figure, i want to access "name" as it has images in it, after reading that, need to convert it into double format for each image and storing that in a folder as "dataset.mat", can anyone please help me with the code please. Thank You

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Tousif Ahmed
Tousif Ahmed 2017-4-18
I didn't understand the part which you explained so i changed the question so that some other can understand what i have asked. Thank You
Rik
Rik 2017-4-18
If you don't understand an answer, ask for clarification. By opening multiple questions that are essentially the same, you don't really generate goodwill. I think you should really start a tutorial to get to know the Matlab basics. I'm sure there are many of them in whatever language you prefer.

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Rik
Rik 2017-4-18

0 个投票

You're in luck. I usually ignore questions that don't show that the person asking has followed the advice from the question guide.
Images=cell(1,2);%pre-allocate a column-vector in the cell format
for n=1:length(dinfo)
position=str2double(dinfo(n).name(1:(end-4)));%convert the filename to a number
Images{position}=im2double(imread(dinfo(n).name));%read the image, convert to double and save in the cell
end

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Tousif Ahmed
Tousif Ahmed 2017-4-18
Thank you very much for your reply i will surely follow the instructions, unfortunately i am getting this error "Subscript indices must either be real positive integers or logicals."
Tousif Ahmed
Tousif Ahmed 2017-4-18
sir, its working when the dinfo has 11x1 struct but not when i increased it to 24x1 struct, its showing this error "Subscript indices must either be real positive integers or logicals"
Jan
Jan 2017-4-18
@Tousif: Please post the relevant code and the complete error message.
Tousif Ahmed
Tousif Ahmed 2017-4-18
clc; clear all; %%
dinfo = dir('*.jpg');% image extension
%images=cell(1,2);%pre-allocate a column-vector in the cell format for n=1:length(dinfo) position=str2double(dinfo(n).name(1:(end-4)));%convert the filename to a number images{position}=double(imread(dinfo(n).name));%read the image, convert to double and save in the cell
end
I have 50 training
images of size 27x18, 4 test images of same size
example :if u type "load wine_database.mat", we get training and test in double format, i need the images to be in that format so that i can use it for "nprtool/nntool"
</matlabcentral/answers/uploaded_files/75443/wine.PNG>. I need in the format as shown in the reference image. I hope you are understanding what i am asking you

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