Reading Photoshop Metadata via Ping()

[markolbert]

I get different results depending on whether or not I use Ping() to access the metadata in a photoshop file:

I can get the metadata if I load the entire file:

using var image = new MagickImage( filePath );

// all these calls generate results
var junk = image.GetXmpProfile();
var junk2 = image.GetIptcProfile();
var junk3 = image.GetExifProfile();

But if I try to use Ping() no metadata is returned:

using var image = new MagickImage();
image.Ping( filePath );

// all these calls return null (on the same file)
var junk = image.GetXmpProfile();
var junk2 = image.GetIptcProfile();
var junk3 = image.GetExifProfile();

Does Ping() not support Photoshop files? Or am I misusing Ping()?

[dlemstra]

The PSD coder should read those image profiles when you Ping the image. Is it possible to share your file so I can check with a debugger why this is happening?

[markolbert]

Sure, happy to. FYI, I've confirmed (using exiftool) that there should be XMP-dc:Subject keywords and IPTC:Keywords (both are the same: Farm, house.

Oops, github doesn't like psd files. I've tricked it by changing the file extension to jpg, so you'll have to change it back to psd after you get it.

[dlemstra]

I am unable to download that file? Aother trick would be to zip the file.

[markolbert]

Take number two, via zip :)
McHugh-Olbert_0036_b.zip

[dlemstra]

It looks like you found a bug / missing feature in the ImageMagick library. We have the information when the image is being "pinged" but we don't set it on the image. I just pushed a patch to ImageMagick to fix that in the next release. In the next release of Magick.NET you will be able to get the profile information when you ping the image.

[markolbert]

Do I get naming rights? :)

Seriously, thanx for creating and maintaining a very useful library! Happy to have helped.