How to convert a folder with multiple type of images such as PNG, GiF, JEPG,...etc into JPG and store the converted images in a folder in desktop ?
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How to convert a folder with multiple type of images such as PNG, GiF, JPEG,...etc into JPG and store the converted images in a folder in desktop ?
댓글 수: 1
Walter Roberson
2017년 12월 2일
What kind of file do you have that has multiple types of images stored inside it?
채택된 답변
Akira Agata
2017년 12월 2일
How about the following script?
fileList = {'ngc6543a.jpg','corn.tif'};
for kk = 1:numel(fileList)
I = imread(fileList{kk});
[~,fileName,ext] = fileparts(fileList{kk});
imwrite(I,[fileName,'.png']);
end
댓글 수: 13
Intan Antasari
2019년 1월 31일
I got an error because I use imwrite to save .mat format.
I realize that imwrite is use to save image format. I already solve that problem.
I use save (filename, 'A')
Thank you for your help.
추가 답변 (2개)
Jos (10584)
2017년 12월 4일
Why not use a dedicated tool to convert images, like good-old IrfanView (does it still exist?) or gimp?
댓글 수: 0
cui,xingxing
2019년 1월 31일
편집: cui,xingxing
2019년 1월 31일
you can write like this,but can get all images from website(note: modify your urls):
clc
clear
% s=urlread('https://image.baidu.com/search/index?tn=baiduimage&ipn=r&ct=201326592&cl=2&lm=-1&st=-1&sf=1&fmq=&pv=&ic=0&nc=1&z=&se=1&showtab=0&fb=0&width=&height=&face=0&istype=2&ie=utf-8&fm=result&pos=history&word=%E6%B8%85%E6%9C%9D%E7%A1%AC%E5%B8%81');
s = webread('https://mp.weixin.qq.com/s/WlGxKjirx1iKqwmfMzVI0g');
pat='https://[^,"]*.=(jpg|png|gif|jpeg)';
% pat='http://[^,]*.jpg';
expr= regexp(s, pat, 'match');
%%
fid=fopen('images.txt','w');
fprintf(fid,'%s\n',expr{:});
fclose(fid);
for i=1:length(expr)
img_url =expr{i};
try
% s=websave(a,sprintf('%d.jpg',i), 'UserAgent','MATLAB R2015b','Timeout',100,'Get',{'term','urlread'});
s = websave(['./',sprintf('%d.jpg',i)],img_url);
catch ME
continue
end
end
%% show urls
imgs = string(expr);
for i = 1:length(imgs)
fprintf('%s\n',imgs(i));
end
% reference: https://stackoverflow.com/questions/169625/regex-to-check-if-valid-url-that-ends-in-jpg-png-or-gif
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