No, because they're identifying who the people in the photograph are, even though it happened after the photo was taken.
If you say 'identifications from a photo', it suggests that you're taking a photo where you know the person, and use that photo to verify the person in real life.
For example, a policeman might identify a criminal from photo book of known suspects. You might identify a body from a photograph. You might identify a celebrity from a photo.
The two are opposites. 'identifications in a photo' - you have a photo with unknown people, and try to match known people to the picture. 'identification from a photo' - you have a photo with known people, and try to match the photo with real people you're looking at.
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