How to delete images with particular extension and size from many folders ?

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ahmed obaid
ahmed obaid 2017-1-6
回答： Image Analyst 2017-1-7
Dear experiences
I have 100+ folders, I'm using matlab code for my project code, i would like to eliminate images that has for example 50kb size and also images with gif, png and bmp extensions, so is there any code can implement this task?
folders has names in the following sequence (folder1, folder2.... folder100).
I can browse every folder, then browse every image.. in each folder..
My question: How to compare size of an image with 50kb then check its extension if not satisfy .. then deleted?

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回答（2 个）

KSSV
KSSV 2017-1-6
[pathstr,name,ext] = fileparts(filename)
The above command gives you file name, path and it's extension.
If you get the files using f = dir('*extension') ; then f will be a structure, you can get size of file using f(i).bytes.
You can use delete to delete a file and rmdir to delete a folder.
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ahmed obaid
ahmed obaid 2017-1-6
编辑：ahmed obaid 2017-1-6
thank your for your answer can you please give me an example how to compare an image ext. if not jpg then image will be deleted ?
thanks again

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Image Analyst
Image Analyst 2017-1-7
See my attached demos, which can do that if you put delete inside the loop.

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