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Author Topic: How to extract metadata from an image?  (Read 3670 times)

cpalx

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How to extract metadata from an image?
« on: February 20, 2021, 09:36:47 pm »
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

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Re: How to extract metadata from an image?
« Reply #1 on: February 20, 2021, 09:43:18 pm »
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speter

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Re: How to extract metadata from an image?
« Reply #2 on: February 20, 2021, 11:56:07 pm »
You could maybe use the EXIF library, see the thread below
https://forum.lazarus.freepascal.org/index.php/topic,49648.msg360764.html#msg360764

cheers
S.
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lucamar

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Re: How to extract metadata from an image?
« Reply #3 on: February 21, 2021, 12:12:11 am »
Quote from: speter on February 20, 2021, 11:56:07 pm
You 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.
« Last Edit: February 21, 2021, 12:16:12 am by lucamar »
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cpalx

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Re: How to extract metadata from an image?
« Reply #4 on: February 26, 2021, 10:31:29 pm »
thanks to all
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bazinga!

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Re: How to extract metadata from an image?
« Reply #5 on: March 02, 2021, 03:16:26 pm »
I was looking for this too. Thanks a bunch. :D
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