imwrite saving image file without extension even after specifying the extension.

Question

YADHUKRISHNAN 2014-7-31

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/144179-imwrite-saving-image-file-without-extension-even-after-specifying-the-extension

评论： YADHUKRISHNAN 2014-7-31

original= iin;
for hsize=3:2:9
for sigma=0.5:0.5:2
close all;    
file1 =sprintf('Intern_log_plot%d_hsize=%d_sigma=%.1f',n,hsize,sigma);
file2 =sprintf('Intern_log%d_hsize=%d_sigma=%2f',n,hsize,sigma);   
s1=sprintf('%s%s%s%d%s%s',image_folder,l,filenames(n).name,n,l,file1);          
s2=sprintf('%s%s%s%d%s%s',image_folder,l,filenames(n).name,n,l,file2);
h=fspecial('log',hsize,sigma);
pic=imfilter(original,h);                                  
figure;
subplot(2,2,1);
imshow(original);title('Raw Image');
subplot(2,2,2);
imshow(pic);title('Output');
colormap('default');
h=gcf;
saveas(h,s1,'jpg');
imwrite(pic,s2,'jpg');

The imwrite function writes the file to the disk as files without any extension(so the image file is not detected by image viewer softwares), with the format being already specified as 'jpg' in the imwrite function.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Michael Haderlein 2014-7-31

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/144179-imwrite-saving-image-file-without-extension-even-after-specifying-the-extension#answer_146967

The file extension will not be added if you already provide a file extension in the filename. As you have dots (.) in your filename, everything after the dot will be seen as a file extension. If you add the file extension in your filename (you can add .jpg in your sprintf formats), it will work.

5 个评论
显示 3更早的评论隐藏 3更早的评论

YADHUKRISHNAN 2014-7-31

I need not specify the extension in saveas and imwrite functions. Right?

YADHUKRISHNAN 2014-7-31

Thanks a lot...The problem got solved.

请先登录，再进行评论。

Answer 2

YADHUKRISHNAN 2014-7-31

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/144179-imwrite-saving-image-file-without-extension-even-after-specifying-the-extension#answer_146970

But the filename does not have an extension specified along with that. I can't add .jpg in sprintf because my filename is dynamic, it changes in each loop and for each images so that I have saved the filename as string