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check if the picture exist within the database

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Im@
Im@ 2015-3-19
评论： Im@ 2015-3-19
hello I have read a database of images in matlab, I want to check if all the pictures exist before i run the program, what is the command to check ?

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回答（1 个）

Konstantinos Sofos
Konstantinos Sofos 2015-3-19
编辑：Konstantinos Sofos 2015-3-19
Hi,
you could use an exception catcher
Directory = fullfile ('C:','Users','Documents','MATLAB','image');
Images = dir(fullfile(Directory,'*.jpg'));
Names = {Images.name}';
for k=1: numel(Names)
try
I=imread(fullfile(Directory,Names{k}));
catch
error( ...)
end
end
Regards,
  1 个评论
Im@
Im@ 2015-3-19
for i=1:18 for j=1:3 for k=[37 100]
histowholeimage=[];
anger=[];
name=['anger\' num2str(i,'%04d') '_' num2str(j,'%2d') '\p_' num2str(k,'%03d') '.jpg'];
img=imread(name);% read the image
imshow(img)
pause
end
end
end
I have a databas, I read in this way but some of the images' name are not exist for example 31 is missed. before I load the program I have to search if all the images exists

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