CODEWITHSUNDEEP
c++image
manatttta
manatttta

Reputation: 3124

Get image info from header (width, height, etc) without opening it

I have been using OpenCV to read and manage images. But now, given the image path, I want to QUICKLY store only the image path, width and height (I do not want to load the image buffer), for a wide range of image formats.

OpenCV does not allow to do this without loading the whole image. I could implement image header parsers for a set of formats, but this might take a while.

Is there any library or so that can do this?

Upvotes: 0

Views: 738

Answers (1)

Mark Setchell
Mark Setchell

Reputation: 207455

Yes, ImageMagick at the command line like this:

identify -ping image.png
image.png PNG 510x500 510x500+0+0 8-bit sRGB 2.36KB 0.000u 0:00.000

Or, if you have lots of images to do in a single invocation, use it like this:

identify -ping -format "%f %w %h\n" *.png
a.png 500 500
image.png 510 500
n.png 500 510
s.png 510 500
sw.png 510 550
w.png 510 500

C/C++, Python and Perl bindings are also available. It is installed on most Linux distros, and available for OSX and Windows from here.

Upvotes: 1

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