How I co-relate imfinto.FileSize to Image size (kb)

My image size is 101 kb. How I will get the size in kb using matlab. I tried imfinfo.FileSize which returns me 103222. How I will co-relate this.

Answer 1

[Jan]

You can use dir also:

FileInfo = dir(FileName);
FileInfo.bytes

Note that "kB" does not mean 1000 bytes, but 1024. Now divide 103222 by 1024 and you get 100.802, which is displayed as 101kB.

[Nimit Jain]

Thanks Jan.

Answer 2

[Image Analyst]

Depends on what you mean by "image size". The size of the file on disk is the file of the file on disk but not the size of the image once it's been read into MATLAB. The file size on disk may be smaller if you've used compression, like saved it in a PNG or (hopefully not) JPG. Plus the file size on disk also probably includes some bytes for the header. To determine the size of the image in MATLAB, you'll have to determine the number of elements with numel() and then multiply by the number of bytes for that image class - 1 for uint8 and 2 for uint16.

So now you know how to use imfinfo, and you know how to calculate the number of bytes in MATLAB, so the only question now is what does "co-relate" mean with regards to those two image sizes. You'd have to define that for us.

Answer 3

[Tushar Bhaskarwar]

How can I save my file in eps from mat figure. In my size in 1000 kb.

[Image Analyst]

This is NOT an answer to nimit's question at the top of the page - it has nothing at all to do with it.

I think you mistakenly posted an "Answer" here instead of posting a new question. Please try again.