How to extract metadata from an image?
lazarus / 39-Graphics

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cpalx · 2021-02-20 20:36

I have Lazarus 2.0.10, FPC 3.2

i would like to know, how to extract metadata from an image file

size
resolution
Color Space
Presicion
Comments

and if have geoinformation, too.

Please help.

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GAN · 2021-02-20 20:43

You can try dExif https://github.com/cutec-
chris/dexif/blob/master/ProgrammerGuide.Txt

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speter · 2021-02-20 22:56

You could maybe use the EXIF library, see the thread below
https://forum.lazarus.freepascal.org/index.php/topic,49648.msg360764.h
tml#msg360764

cheers
S.

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lucamar · 2021-02-20 23:12

Quote from: speter on February 20, 2021, 11:56:07 pmYou could maybe
use the EXIF library,
I was going to suggest the same: fpexif, because I had some problems
with some Delphi-specific* sections of dExif.

Though that was some years ago; it may well be corrected by now ...

* TBH, I don't remember if it was Delphi-specific or some breaking
changes in Lazarus/FPC. I think is was the first, but I might be
wrong.

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cpalx · 2021-02-26 21:31

thanks to all

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bazinga! · 2021-03-02 14:16

I was looking for this too. Thanks a bunch.